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- 1. Multiple ChoiceSelect all possible answers: Which of the following help physicists understand the world we live in?EquationsCharacteristics of lifeChemical reactionsLaws and theories
- 2. Multiple ChoicePhysics is the study of matter and energy and how they interact.TrueFalse
- 3. Fill in the BlankFill in the blank(s): Physicists study the nature of energy and ____________________.
- 4. Multiple ChoicePhysics includes the study of using radio waves to explore stars and identify other planets.TrueFalse
- 5. Multiple ChoiceAll moving matter has energy.TrueFalse
- 6. Multiple ChoiceWhich of the following is a result of the transfer of energy?gravitysoundelectromagnetismmatter
- 7. Open EndedGive your own definition of physics.
- 8. Open EndedWhat do you already know about physics? What do you think you know?
- 9. Multiple ChoiceWhich sentence about physical science careers is false?Most physical science careers require at least 4 years of college.All physical science careers include lab work.Some physical science careers require a doctoral degree.Many physical science careers require a degree in chemistry.
- 10. Multiple ChoiceWhich of the following is not a physical science career?astronautbiologistphysicistengineer
- 11. PollWhich career involves measuring and recording features on Earth’s surface?forensic techniciansurveyoroptometristnone of the above
- 12. Multiple ChoiceWhen a theory has been known for long time it becomes a law.TrueFalse
- 13. Multiple ChoiceWhich of the following is closest in meaning to the word "hypothesis”?theorysuggested explanationlawfact
- 14. Multiple ChoiceScientists discard a theory when public opinion disagrees with it.TrueFalse
- 15. Multiple ChoiceScientists discard a theory when public opinion disagrees with it.TrueFalse
- 16. Multiple ChoiceExperiments are tests under controlled conditions designed to demonstrate something scientists already know or to test something scientists wish to know.TrueFalse
- 17. Multiple ChoiceIf a hypothesis is rejected by the observations from an experiment, then the experiment is a failure.TrueFalse
- 18. Open EndedDescribe the difference between a scientific theory and a scientific law.
- 19. Open EndedWhy are even failed experiments useful to scientists?
- 20. Multiple ChoiceWhich of the following is a quantitative observation?A 10% concentrated solution of acidConcentrated acidDilute acidAll of the above
- 21. Multiple ChoiceWhich type of data can be used to prepare graphs and a raw data table?QuantitativeQualitativeRandomNone of the above
- 22. Multiple ChoiceRecording a change in which of the following would be an example of a qualitative observation?velocitycolorforcepower
- 23. Multiple ChoiceConvert 0.127 kilometers to _______ centimeters.12,700 cm11,850 cm10,100 cm13,950 cm
- 24. Fill in the BlankThe ____________________ group is the group that is not subjected to the independent variable.
- 25. Multiple ChoiceA researcher has a cold and isn’t doing her best work. What type of error is this?Systematic errorRandom errorExperimental errorControlled error
- 26. Multiple ChoiceWhich of the following is NOT a characteristic of a scientific experiment?The goal is to test a hypothesisIt must be done under controlled conditionsIt can be conducted in laboratories or in the fieldData cannot be collected during an experiment
- 27. Multiple ChoiceTwo main experimental errors are:Desirable & undesirable errorsStatic & dynamic errorsSystematic & random errorsSmall & large errors
- 28. Multiple ChoiceWhat type of variable is changed in an experiment?experimental variablecontrol variableindependent variabledependent variable
- 29. Open EndedConvert 1 day into seconds
- 30. Open EndedCome up with an imaginary experiment. List your independent and dependent variable.
- 31. Multiple Choice_________ motion is actually the result of both Earth and another planet being viewed orbiting the sun.EpicyclicHeliocentricRetrogradeKepler's law of
- 32. Multiple ChoiceWhat is the dominant and highly supported idea explaining the origin of the universe?The Copernican SystemThe Big Bang TheoryNewton's laws of motionBackground Radiation
- 33. Multiple ChoiceWhat is the name for the universe model that has Earth at the center?HeliocentricGeocentricEpicyclicPtolemaic
- 34. Multiple Choice______ were initially used to describe the motion of the planets, and later replaced by Kepler's three laws.EpicyclesCounterclockwise circlesHeliocentric modelsNewtonian loops
- 35. Multiple ChoiceWhich scientist first suggested a sun-centered system with the Earth being one of the planets that revolve around the sun?PtolemyCopernicusGalileoAristotle
- 36. Multiple ChoiceWhat did Robert Wilson discover in support of the Big Bang Theory?The universe has background microwave radiationThe universe is composed of billions of galaxiesThe universe is expanding rapidlyThe universe has many galaxies close to ours
- 37. Multiple ChoiceAstronomer Johannes Kepler suggested that the orbits of the planets were actually not circular but ellipticalTrueFalse
- 38. Multiple ChoiceHubble provided evidence that the universe is larger than just the Milky Way and also provided evidence that all other galaxies are moving toward our own galaxy.TrueFalse
- 39. Open EndedPick one scientist mentioned in the chapter. Write a brief (3-4 sentences) history of his/her life and their contributions to our understanding of the origins of the universe.
- 40. Open EndedDo we currently know everything about the origins of the universe? What questions do you still have after today's lesson regarding how the universe was formed?
- 41. Multiple ChoiceAt the time of the Big Bang,All the matter and energy of the universe was compressed into a pointHydrogen formed after a few minutesProtons, neutrons and electrons formed after a few secondsAll of the above
- 42. Multiple ChoiceHow many billion years ago did the Big Bang occur?496Over 102.5
- 43. Multiple ChoiceThe Milky Way galaxy is about the same age as the universe.TrueFalse
- 44. Multiple ChoiceIn the early universe, matter was held together by which force?GravityCentrifugalInertiaAttractive
- 45. Multiple ChoiceThe universe has been expanding for about 1 billion years.TrueFalse
- 46. Multiple ChoiceWhich of the following gases are the most abundant in the Universe?Oxygen and nitrogenSulfur and nitrogenHydrogen and oxygenHydrogen and helium
- 47. Multiple ChoiceIn the first few moments after the Big Bang, the universe was _____.HotDenseCoolBoth A and B
- 48. Multiple ChoiceThe Big Bang theory provides no explanation for the amount of helium in the universeTrueFalse
- 49. Multiple ChoiceThe Big Bang theory accounts for the existence of light elements.TrueFalse
- 50. Open EndedWhat evidence is there that the Universe began in a big bang?
- 51. Open EndedWhat happened in the first minutes after the Big Bang?
- 52. Open EndedWhat was created at the Big Bang?
- 53. Multiple ChoiceA small- to mid-sized star that has collapsed is known as a _____.Neutron starSupernovaRed giantWhite dwarf
- 54. Multiple ChoiceWhen inward force is equal to outward force, a star collapses.TrueFalse
- 55. Multiple ChoiceA neutron star is a stellar remnant which is almost entirely made of neutrons.TrueFalse
- 56. Multiple ChoiceA supernova can briefly outshine a whole galaxyTrueFalse
- 57. Multiple ChoiceAccording to the scientists, the Sun will become a red giant in approximately _____.5 billion years1000 years3 billion years1 million years
- 58. Multiple ChoiceA black hole is a remnant of a supernova.TrueFalse
- 59. Multiple ChoiceA star stays on the main sequence as long asIt fuses hydrogen into heliumIt is any of the colors between blue and redIt has nuclear fusion of heavy elementsAll of the above
- 60. Multiple ChoiceEvery star would explode if the gravity failed to hold its material together.TrueFalse
- 61. Multiple ChoiceA white dwarf is a large, white star that is cool in temperature.TrueFalse
- 62. Multiple ChoiceThe Sun formed about _____ billion years ago, as the solar system coalesced from a cloud of gas and dust.532.51.5
- 63. Open EndedWhat is the life cycle of a small star?
- 64. Open EndedWhat is the life cycle of a medium star?
- 65. Open EndedWhat is the life cycle of a large star?
- 66. Multiple ChoiceWhat color stars have the highest surface temperature?blueyellowredwhite
- 67. Multiple ChoiceWhat is the color of the stars with the lowest surface temperature?blueyellowred
- 68. Multiple ChoiceMost of the stars on the HR Diagram are classified as what type of stars?white dwarfmain sequencered giantsupergiant
- 69. Multiple ChoiceWhy are White Dwarfs so dim even though they are so hot?Because of their small size.They are not dim, they are actually very bright.White dwarfs are not hot, they are much cooler than other stars.Anytime a star has left the main sequence, it becomes dimmer.
- 70. Multiple ChoiceAs a star moves to the right on the HR diagram, it is becoming hotter.TrueFalse
- 71. Multiple ChoiceLook at the HR diagram in the chapter text. Which of the following stars is the hottest?RigelBetelgeuseAntaresThe Sun
- 72. Multiple ChoiceLook at the HR diagram in the chapter text. Which of the following stars is the brightest?RigelBetelgeuseAntaresThe Sun
- 73. Open EndedExplain in your own words where our sun falls on the HR Diagram.
- 74. Multiple ChoiceHubble’s Law states that:The farther away a galaxy is, the faster it is moving away from usThe farther away a galaxy is, the slower it is moving away from usThe closer a galaxy is, the faster it is moving away from usNone of these
- 75. Multiple ChoiceAlmost every galaxy is moving away from us.TrueFalse
- 76. Multiple ChoiceWhen a light source moves away from us, what is the consequent stretching out of wavelengths known as?BlueshiftRedshiftCoriolis effectColor effect
- 77. Multiple ChoiceHubble's Law supports the idea that the Universe is expanding.TrueFalse
- 78. Multiple ChoiceIn a distant star, what can be identified by determining what bands of light on the spectrum a star absorbs?elementsplanetscometsdistance from Earth
- 79. Multiple ChoiceWhat is redshift?Absorption bands are shifted toward the red end of the spectrumSound waves are moving away from the observerAbsorption bands are shifted toward the blue end of the spectrumAll of the above
- 80. Multiple ChoiceAs the universe expands it is the __________ that is expanding.Space between the galaxiesEntire universe and everything in itSpace within the galaxiesSpace within atoms and molecules
- 81. Multiple ChoiceWhen an object is moving towards us, there is a decrease in the wavelength of the light emitted from that object. This is known as the blueshift.TrueFalse
- 82. Multiple ChoiceHubble's law gives a measure of the velocities at which galaxies are moving away from us.TrueFalse
- 83. Multiple ChoiceThe expansion of the universe has stopped.TrueFalse
- 84. Open EndedHow do astronomers determine the composition of distant stars?
- 85. Open EndedWhat is the significance of the idea that the universe is expanding?
- 86. Fill in the BlankThe ____________________ model is a simple theory that explains all the matter in the universe and its interactions.
- 87. Multiple ChoiceSelect all possible answers: Which of these are types of quarks?UpUnderBottomMuon
- 88. Multiple ChoiceAtoms are the smallest fundamental particlesTrueFalse
- 89. Multiple ChoiceGravitons have only been hypothesized to exist because of what we know about how gravity effects matter, but they have never been observed.TrueFalse
- 90. Multiple ChoiceAccording to the standard model, all known matter consists of quarks and leptons that interact by exchanging bosons, which transmit fundamental forces.TrueFalse
- 91. Multiple ChoiceWhich scientist is credited with discovering the atom?James ChadwickJ.J. ThomsonJohn DaltonAlbert Einstein
- 92. Multiple ChoiceFill in the blank(s): Protons and neutrons are made up of fundamental particles of matter called __________.QuarksElectronsGluonsMuons
- 93. Multiple ChoiceSelect all possible answers: What physical phenomena does the standard model not explain?The most fundamental particles that make up matterThe force of gravityWhy matter has massThe source of electromagnetic forces
- 94. Open EndedOutline the order in which fundamental particles were discovered.
- 95. Open EndedWhat is the standard model? In what ways is it incomplete?
- 96. Multiple ChoiceFill in the blank(s): ____________________ have an electric charge of -1, so ____________________ have an opposite but equal electric charge of +1.Electrons, ProtonsProtons, ElectronsNeutrons, ProtonsBosons, Electrons
- 97. Multiple ChoiceWhich of these is a fundamental force carrying particle?PhotonNeutronProtonElectron
- 98. Multiple ChoiceWhat keeps the nucleus of an atom together?The electrons' strong attraction to the protonsThe neutrons' strong repulsion of protonsThe strong force of attraction between protons and neutrons
- 99. Multiple ChoiceAn atom becomes radioactive when it's nucleus becomes unstable. This happens because:Too many protons in the nucleus cause them to repel rather than attract to the neutrons.Too many electrons orbiting the atom pull protons away from the neutrons in the centerToo many neutrons in the nucleus cause the particles to repel each otherAll of the above
- 100. Multiple ChoiceBoth protons and neutrons consist of one up quark and two down quarks.TrueFalse
- 101. Multiple ChoiceFill in the blank(s): When protons change to neutrons, this changes atoms of one ____________________ to atoms of another with different atomic properties.ElementBosonMoleculeAtom
- 102. Multiple ChoiceSelect all possible answers: What particles are held in the nucleus of an atom?NeutronsElectronsPhotonsProtons
- 103. Multiple ChoiceThe Weak Nuclear Force in an atom is transferred by the exchange of force-carrying fundamental particles called ______.BosonsElectromagnetismPhotonsQuarks
- 104. Multiple ChoiceAn up quark in a proton is changed by the weak force to a down quark. This changes the proton (uud) to a neutron (udd).TrueFalse
- 105. Multiple ChoiceBecause of electromagnetic force, particles with opposite charges _____ each other and particles with the same charge repel each other.AttractRepel
- 106. Open EndedWhat is the strong nuclear force? How does it hold the nucleus together?
- 107. Open EndedWhich subatomic particles are affected by electromagnetic force? How does this force affect them?
- 108. Multiple Choice
UraniumPlutoniumThoriumMagnesium - 109. Fill in the BlankFill in the blank(s): The number of protons in a nucleus is called the ____________________ number and designated by the symbol Z.
- 110. Fill in the BlankFill in the blank(s): Protons and neutrons are found in the nucleus. These two types of particles are referred to collectively as ____________________ .
- 111. Multiple ChoiceIf magnesium-24 = 78.70%, magnesium-25 = 10.13%, and magnesium-26 = 11.17%, what is the atomic weight of magnesium?24.3216.4617.1319.87
- 112. Multiple ChoiceFill in the blank(s): Each different isotope has the same number of ____________________ and a different number of ____________________.Protons, NeutronsNeutrons, ProtonsProtons, ElectronsElectrons, Protons
- 113. Fill in the BlankWhat element is recognized by atomic number 12?
- 114. Multiple Choice15023292140
- 115. Multiple ChoiceWhat element contains 8 protons in its nucleus?OxygenCarbonNeonHelium
- 116. Multiple Choice14015023292
- 117. Open EndedWhat do different isotopes of a given element have in common? How are they different?
- 118. Open EndedUsing the following data, calculate the atomic weight of magnesium. - Magnesium-24 = 78.70% - Magnesium-25 = 10.13% - Magnesium-26 = 11.17%
- 119. Multiple ChoiceFind the nuclear reaction for the helium-3 produced by beta (-) decay of a certain nuclide.ABC
- 120. Multiple ChoiceWhat happens to the neutron to proton ratio of a nucleus when it emits an alpha particle?It increasesIt decreasesIt remains the sameCan't be predicted
- 121. PollABC
- 122. Multiple ChoiceWhat element is formed by the alpha decay of bismuth-211?ThalliumLeadPoloniumAstatine
- 123. Multiple ChoiceWhat element is formed by the beta (-) decay of sodium-24?MagnesiumNeonOxygenFluorine
- 124. Multiple ChoiceWhy are alpha particles easier to stop by materials than beta particles?They are largerThey are weakerThey are negatively chargedThey are slower
- 125. Fill in the BlankWhat element is formed from beta (-) decay of a copper-64 nucleus?
- 126. Open EndedWho was Marie Curie, and what were her contributions to Physics/Chemistry?
- 127. Open EndedWhy does the ratio between protons and neutrons in the nucleus remain the same after emitting an alpha particle?
- 128. Multiple ChoiceU-235 nuclei split when struck by _______.a neutronan electrona proton
- 129. Multiple ChoiceA moderator in a nuclear reactor decelerates the neutrons.TrueFalse
- 130. Multiple ChoiceWhich one of these statements is true about the moderator and the control rods in a nuclear power station?The control rods slow the neutrons down, while the moderator absorbs the neutronsThe moderator slows the neutrons down, while the control rods absorb the neutronsThe moderator and control rods absorb the neutronsNone of the above
- 131. Multiple ChoiceU-235 will function as fuel in a fission reactor.TrueFalse
- 132. Multiple ChoiceNuclear power plants produce electricity through _____.induced fissionbeta decayAlpha decayinduced fusion
- 133. Multiple ChoiceThe main difference between a nuclear power plant and a fossil fuel plant is the size of the generator.TrueFalse
- 134. Multiple ChoiceWhich of the following will function as fuel in a fission reactor?hydrogencoalall isotopes of uraniumonly U-235
- 135. Open EndedWhat are some of the societal pros and cons of using nuclear energy instead of fossil fuels or renewables?
- 136. Multiple ChoiceThe breakup of a larger nucleus into two or more smaller nuclei is ____________________.FissionFusionHalf LifeConservation
- 137. Multiple ChoiceOption 1Option 2Option 3Option 4
- 138. Multiple ChoiceThe disintegration of unstable nuclei occurs all at once.TrueFalse
- 139. Multiple ChoiceEach particular ____________________ has its own half-life.IsotopeProtonNeutronNucleon
- 140. Multiple ChoiceIn all nuclear reactions, the total of the atomic numbers on the left side of the equation must equal the total of the atomic numbers on the right side of the equation.TrueFalse
- 141. Multiple Choice1.00 g0.5 g0.25 g2.00 g
- 142. Multiple Choice____________________ is when small nuclei become more stable by joining together to form larger nucleiFusionFissionHalf LifeDecay
- 143. Open EndedThe isotope Neptunium-238 has a half-life of 2.0 days. If 8.00 grams are produced at noon on Monday, what will be the mass of neptunium remaining at noon on Tuesday of the following week?
- 144. Multiple Choice
What causes the changes in seasons?
The sun is closer to earth in the summer months.
When the earth's axis points towards the sun, it is summer for that hemisphere.
Seasons are random and not predictable.
- 145. Multiple Choice
During a solar eclipse..
The moon is between the sun and the earth.
The earth is between the sun and the moon.
Mercury is between the sun and the earth.
The moon is on the other side of the sun.
- 146. Multiple Choice
During a lunar eclipse..
The moon is between the sun and the earth.
The earth is between the sun and the moon.
Mercury is between the sun and the earth.
The moon is on the other side of the sun.
- 147. Multiple Choice
When the light is seen on the right side of the moon it is..
Waxing
Waning
A crescent
A gibbous
- 148. Multiple Choice
The moon shown here is a..
Waning gibbous
Waxing gibbous
Waning crescent
Waxing crescent
- 149. Multiple Choice
What causes tides?
The gravitational forces exerted on the earth by the moon, and to a lesser extent, the sun.
The tilt of the earth as it orbits the sun.
The gravity of the moon only.
The rotation of the earth along with its tilt as it orbits the sun.
- 150. Multiple Choice
What causes neap tides?
The relative position of the sun and moon to the earth cancel out their gravitation effect on the tides.
The relative position of mercury and moon to the earth cancel out their gravitation effect on the tides.
The relative position of the sun and moon are on opposite sides of the earth, causing minimal tides.
- 151. Multiple ChoiceThe mass of an object on Earth is 100 kg. The mass of this object on the moon is differentTrueFalse
- 152. Multiple ChoiceWhich equation should be used to calculate the weight of an object on Earth?Option 1Option 2Option 3Option 4
- 153. Multiple ChoiceWhat is the weight of a girl with a mass of 30 kg on Earth in Newtons? *Use 9.81294.3 N291.9 N287.1 N300.4 N
- 154. Multiple ChoiceWhat is the weight of a box with a mass of 150 kg on Earth? *Use 9.81 m/s1,471.5 Newtons1,321.7 Newtons1,250.3 Newtons1,825.1 Newtons
- 155. Multiple ChoiceCompared to 5 kg of cotton, 4 kg of lead hasMore mass and more inertiaLess mass and less inertiaLess mass and more inertia
- 156. Open EndedExplain the difference between weight and mass.
- 157. Open EndedHow would an object's weight and mass be affected if it was transported from the earth to the moon?
- 158. Multiple ChoiceKepler’s first law states the path of each planet around the sun is ________ with the sun at one focus.ellipticalcircularparabolicsquare
- 159. Multiple ChoiceAccording to Kepler's Laws, a planet moves at a slow speed in its orbit when it is far away from the SunTrueFalse
- 160. Multiple ChoiceOne of Kepler's Laws of Planetary Motion states that an object in motion remains in motion.TrueFalse
- 161. Multiple ChoiceKepler's laws of planetary motion were developed by Bernhard Kepler.TrueFalse
- 162. Multiple ChoiceAs a planet moves in its orbit, a line from the sun to the planet sweeps out equal areas in equal times. This is Kepler’s ____ law.1st2nd3rd
- 163. Multiple ChoiceIf a planet's orbital speed is 20 km/s when it's at its average distance from the sun, which is most likely orbital speed when it is nearest the sun?10 km/s15 km/s20 km/s25 km/s
- 164. Multiple Choice20.89 yr10.56 yr18.23 yr29.46 yr
- 165. Multiple ChoiceNewton’s law of universal gravitation states that the force of gravity affects everything with mass in the universe.TrueFalse
- 166. Multiple ChoiceWhat is gravity?A natural phenomenon by which physical bodies appear to attract each other with a force proportional to their masses and inversely proportional to the distance separating them.An amplification of an input force to provide a greater output force.The directional speed of an object in motion as an indication of its rate of change in position as observed from a particular frame of referenceThe rate at which an object changes its velocity.
- 167. PollWhat is the universal gravitational constant?Option 1Option 2Option 3Option 4
- 168. PollWhat is the equation for the the universal law of gravitational attraction?Option 1Option 2Option 3Option 4
- 169. Multiple ChoiceWhat is the relationship between the strength of a gravitational force and mass?The more mass, the stronger the force of gravityThe more mass, the weaker the force of gravityMass has no effect on gravityMass and distance both increase the strength of gravity
- 170. Multiple ChoiceWhat is the relationship between the strength of a gravitational force and distance?The less distance, the stronger the force of gravityThe less distance, the weaker the force of gravityDistance has no effect on gravityMass and distance both increase the strength of gravity
- 171. Multiple ChoiceWhat is an inertial frame?A frame of reference that is not undergoing any acceleration.A frame of reference in which the acceleration is happening at a consistent rateA frame of reference in which acceleration cannot happen.A frame of reference in which objects are traveling toward each other at the same speed.
- 172. Multiple ChoiceYou are sitting in the passenger seat of a car traveling 60mph. You toss a ball up in the air. Why does the ball not fly back and hit you in the face?Because the ball is still traveling 60mph in the direction the car is driving.The ball WOULD fly back when you toss it up.The ball does not undergo backwards gravity due to the velocity of the car.The ball would actually fly forward because it is traveling 60mph.
- 173. PollCar A is driving 50mph east on the freeway. Car B is also traveling east on the freeway at a speed of 65mph. What is the velocity of car A relative to car B?-15mph15mph115mph-115mph
- 174. Multiple ChoicePerson A is sitting next to person B on a plane. The plane is traveling 300mph. What is the speed of person B relative to person A?0 mph300 mph225 mph350 mph
- 175. Multiple ChoicePerson A is sitting next to person B on a plane. The plane is traveling 300mph. What is the speed of person A relative to the ground?0 mph300 mph225 mph350 mph
- 176. Multiple ChoiceWhich of the following can be derived from a position versus time graph?velocitymomentumaccelerationkinetic energy
- 177. Multiple ChoiceIf an object is moving and it changes its position by 2 m in every 4 s starting from the origin, then the position vs. time graph will beA curved line rising upwardsA vertical lineA straight line with no slopeA straight line with a positive slope
- 178. Multiple ChoiceThe slope of a position-time graph represents ________.VelocityAccelerationGravityMomentum
- 179. Multiple ChoiceThe x-axis of a position-time graph represents _______.TimeVelocitySpeedAcceleration
- 180. Multiple ChoiceWhat does the y-axis of a position-time graph represents?TimeVelocitySpeedPosition
- 181. Multiple ChoiceWhich of the following correctly describes the axes and units of a position-time grapx-axis = time (s); y-axis = position (m)x-axis = position (m); y-axis = time (s)x-axis = velocity (m/s); y-axis = time (s)x-axis = time (s); y-axis = velocity (m/s)
- 182. Multiple ChoiceWhat is the formula for calculating the average velocity of a moving object?Option 1Option 2Option 3Option 4
- 183. Multiple ChoiceA position-time graph shows the direction(s) the moving object has traveled relative to the starting position.TrueFalse
- 184. Multiple ChoiceA position-time graph shows how far an object has been displaced from its initial location at any given time since it started moving.TrueFalse
- 185. Multiple ChoiceIf the line depicting an object's motion on a velocity-time graph is horizontal, then what is its acceleration?zeropositivenegativegreater than 1
- 186. Multiple ChoiceThe slope of a velocity-time graph represents _____.AccelerationVelocityMomentumDirection
- 187. Multiple ChoiceThe object is accelerating.The object is moving in the positive direction.The object has a velocity greater than 0.The object is moving at a constant velocity.
- 188. PollThe steepness of a line graph is called its slopeTrueFalse
- 189. Multiple ChoiceIf a sprinter begins from rest and reaches a velocity of 2 m/s in just 1 second, then what is her acceleration during this time period?2m/s^21m/s^20.5m/s^20m/s^2
- 190. Multiple ChoiceIf a line on a velocity-time graph is horizontal, then which of the following statements correctly describes the object's motion?The object's velocity is not changing.The object's velocity is increasing over time.The object is accelerating.The object's velocity is decreasing over time.
- 191. Multiple ChoiceThe y-axis of a velocity-time graph represents _____VelocityTimeAccelerationPosition
- 192. Multiple ChoiceThe x-axis of a velocity-time graph represents _____.VelocityTimeAccelerationPosition
- 193. Open EndedWhat are the main differences between a position-time graph and a velocity-time graph?
- 194. Multiple ChoiceIf a motorboat starts from rest and accelerates at 4 m/s, what velocity will it reach after 6 seconds?24 m/s6 m/s4m/s0 m/s
- 195. Multiple ChoiceThe equation below accurately describes the motion of an object that experiences constant non-zero acceleration.TrueFalse
- 196. Multiple ChoiceWhat is the acceleration of a boat if it starts from rest and then reaches a velocity of 24 m/s in 6.0 s?0.25m/s4.0m/s24m/s144m/s
- 197. Multiple ChoiceIf an object has zero acceleration, then it has zero velocity.TrueFalse
- 198. Multiple ChoiceAn object with zero acceleration is not changing its velocity.TrueFalse
- 199. Multiple ChoiceA boat's initial velocity is 30 m/s. After 2.5 seconds, its velocity is 5 m/s. What is the boat's rate of acceleration?-10 m/s- 27 m/s- 5 m/s- 20 m/s
- 200. Multiple ChoiceAn object that changes its direction of motion without changing its speed is accelerating.TrueFalse
- 201. Open EndedThe friction of the water on a boat produces an acceleration of -10. m/s. If the boat is traveling at 30. m/s and the motor is shut off, how long it take the boat to slow down to 5.0 m/s?
- 202. Open EndedName (First and Last)
- 203. Multiple ChoiceWhen hit from behind in a car crash, a passenger wearing a seat belt can suffer a neck injury. Which of Newton's laws does this exemplify?third law of frictionsecond law of speedthird law of directionfirst law of motion
- 204. Multiple ChoiceWhat is the SI unit of force?TeslaNewtonJoulesKg
- 205. Multiple ChoiceFrictional force is a contact force.TrueFalse
- 206. Multiple ChoiceIf an object is moving with a changing velocity, then there must be a non-zero net force acting on the object.TrueFalse
- 207. Multiple ChoiceFind the weight of a 30 kg object on the Moon where the acceleration of gravity is 1.622 m/s². (Round to the nearest whole number)162 N300 N49 N67 N
- 208. Multiple ChoiceWhen a body is in motion the net external force can never be zero.TrueFalse
- 209. Multiple ChoiceA school bus comes to a sudden stop and all of the bags on the floor start to slide forward due to the effect of gravitational force.TrueFalse
- 210. Open EndedIf your hammer develops a loose head, you can tighten it by banging it on the ground. A little physics secret though – it’s better to bang the hammer head up rather than head down. Explain, using inertia.
- 211. Open EndedWhen hit from behind in a car crash, a passenger can suffer a neck injury called whiplash. Explain in terms of inertia how this occurs, and how headrests can prevent the injury.
- 212. Open EndedName (First and Last)
- 213. Multiple ChoiceIf a spaceship traveling at 1,000 miles per hour enters an area free of gravitational forces, its engine must run at maximum level in order to maintain the ship's velocity.TrueFalse
- 214. Multiple ChoiceIf a spaceship traveling at 1,000 miles per hour enters an area free of gravitational forces and air resistance, then the pilot can slow the ship down by shutting off the engine for a while.TrueFalse
- 215. Multiple ChoiceAfter a rocket ship going from Earth to the Moon leaves the gravitational pull of Earth, it can shut off its engine and the ship will continue on the same path due to its inertia.TrueFalse
- 216. PollIf the net force on a baseball with a mass of 0.145 kg is 18.9 N, then what is the resulting acceleration of the baseball?2.74 m/s^218.9 m/s^20.145 m/s^2130 m/s^2
- 217. Multiple Choice1421.6kg1328.6kg1428.6kg1438.5kg
- 218. Multiple ChoiceWhat is the acceleration of a car with the mass of 1,980 kg if it experiences a net horizontal force of 1,000 N?1.98 m/s^21, 980, 000m/s^20.505 m/s^29.81 m/s^2
- 219. Multiple Choice25m/s^20.5m/s^262.5m/s^250m/s^2
- 220. Open EndedName (First and Last)
- 221. Multiple ChoiceIf you are standing on a frictionless skateboard next to the wall and applying a force of 30 N on the wall, then the wall will exert an equal force of 30 N on you.TrueFalse
- 222. Multiple ChoiceFor every action there is an equal and opposite reaction.TrueFalse
- 223. Multiple ChoiceIf a 65 kg astronaut exerts a force with a magnitude of 50 N on a satellite that she is repairing, then what is the magnitude of the force that the satellite exerts on her?50 N50 N less than her weight50 N more than her weight65 N
- 224. Multiple ChoiceJake and Angela are both standing on identical skateboards and perform a physics experiment in which they push off one another to move. Jake is much taller and more massive than Angela. If Jake pushes with 20 N of force, then what force does he feel from Angela?50 N20 N35 N100 N
- 225. Multiple ChoiceNewton's third law of motion is obeyed by Newton's law of gravitation.TrueFalse
- 226. Multiple ChoiceNewton's third law is applicable only when air resistance is neglected.TrueFalse
- 227. Multiple ChoiceWhen a bat strikes a ball, the force exerted can send the bat backwards. This is an example of which law of motion?Newton’s First LawNewton’s Second LawNewton’s Third LawLaw of Conservation of Energy
- 228. Open EndedWhat is wrong with the following statement: When you exert a force on a baseball, the equal and opposite force on the ball balances the original force and therefore, the ball will not accelerate in any direction.
- 229. Open EndedSuppose you wish to jump horizontally and in order for you to jump a distance of 4 feet horizontally, you must exert a force of 200 N. When you are standing on the ground, you have no trouble jumping 4 feet horizontally. If you are standing in a canoe, however, and you need to jump 4 feet to reach the pier, you will surely fall into the lake. Why is it that you cannot jump 4 feet out of a canoe when you can easily do this when on land?
- Answer choicesTagsAnswer choicesTags