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- 1. Open EndedIf you triple the diameter of a ball, the volume of the ball will be:
- 2. Fill in the BlankArches work well in construction because ________. a. The entire structure is under tension b. The entire structure is under compression c. The compression and tension balance each other out.
- 3. Fill in the BlankIf you have two differently-sized spheres of metal and they have the same mass, then ________. a. The smaller sphere is denser b. Their densities are proportional to their sizes c. The larger sphere is denser d. They have the same density as well
- 4. Open EndedAn elastic material is one that___. a. Keeps its new shape once deformed b. Bends at least somewhat before breaking c. Is relatively easy to deform. d. Returns to its original shape after being deformed.
- 5. Fill in the BlankCompared to smaller animals, larger animals have a ________. a. similar ratio of surface area to weight b. smaller ratio of surface area to weight c. larger ratio of surface area to weight d. The pressure under 100 feet of salt water is closest to ________.
- 6. Open EndedThe pressure under 100 ft of saltwater is closest to: a. 45 PSI b. 3 atm c. 20,000 leagues d. 400kPa
- 7. Fill in the BlankWhen a boat is floating in the water, ________. a. the buoyant force is greater than the weight of the boat b. the buoyant force equals the mass of the boat c. the buoyant force equals the weight of the boat d. the volume of displaced water equals the volume of the boat
- 8. Fill in the Blank.Pressure can be increased by ________. a. increasing the area or decreasing the force b. taking more time to relax c. raising both the force and the area by proportional amounts d. increasing the force or decreasing the area
- 9. Fill in the BlankIn a hydraulic press (hydraulic lever), if the force is multiplied by a factor of 20, ________. a. the pressure is also multiplied by a factor of 20 b. the distance is divided by a factor of 20 c. the distance is also multiplied by a factor of 20 d. the product of force x distance is also multiplied by 20
- 10. Fill in the BlankIf a tire pressure gauge reads 30 PSI, the actual absolute pressure in the tire is closest to ________. a. 150 kPa b. 45 PSI c. 90 mmHg d. 15 PSI
- 11. Fill in the BlankIf the pressure in a gas is multiplied by a factor of 6 and the temperature is multiplied by a factor of 3, the volume of the gas will be ________ the original volume. a. three times b. twice c. one half of d. one third of
- 12. Fill in the BlankBernoulli's Principle states that, as the velocity of a fluid increases, ________. a. the temperature of the fluid will also increase b. the volume of the fluid will decrease c. the pressure in the fluid will decrease d. the pressure in the fluid will also increase
- 13. Fill in the BlankIn a plasma, the ________. a. atoms are broken down into molecules b. protons are separated from the neutrons c. electrons are separated from the nuclei d. isotopes are separated by charge
- 14. Fill in the BlankNinety nine percent of our atmosphere is contained in a layer about ________ thick. a. 30 miles b. 10 miles c. 40 miles d. 20 miles
- 15. Fill in the BlankEarth's atmosphere is composed primarily of ________.
- 16. Open EndedDo all materials expand when heated?
- 17. Fill in the BlankCompared to an increase in temperature of 20 Fahrenheit degrees, an increase in temperature of 20 Celsius degrees is ________. a. the same b. smaller c. larger
- 18. Fill in the BlankA material with a low specific heat will tend to ________. a. cool down quickly but heat up slowly b. heat up and cool down quickly c. heat up quickly but cool down slowly d. heat up and cool down slowly
- 19. Fill in the BlankCompared to a cup of hot coffee, a bathtub full of lukewarm water has ________. a. lower internal energy and lower average molecular energy b. higher average molecular energy but lower internal energy c. higher internal energy but lower average molecular energy d. higher internal energy and higher average molecular energy
- 20. Fill in the BlankHeat is defined as ________.
- 21. Fill in the BlankThe lower the temperature of an object, the ________ the wavelength of electromagnetic radiation it emits
- 22. Fill in the BlankIf a window is perfectly sealed (no air leaks), heat can still penetrate via ________.
- 23. Fill in the BlankIf you touch a wooden pencil and a metal pen that have both been sitting on your desk, the pen feels cooler because ________.
- 24. Fill in the BlankThe longer the wavelength of electromagnetic radiation, the ________ the frequency.
- 25. Fill in the BlankGlobal warming due to the Greenhouse Effect ________ . a. was first discovered by Al Gore in the early 1970's b. is a Chinese hoax designed to take away our jobs c. may actually be due to ash and other contaminants from volcanos d. can happen on any planet with an atmosphere
- 26. Fill in the BlankWhen water vapor condenses into liquid water, it ________. a. must pass through a solid phase b. transfers heat to the liquid water with no net heat flow to the environment c. absorbs heat from the environment d. releases heat to the environment
- 27. Fill in the BlankClouds and fog are caused by ________. a. evaporating liquid water b. burning too many fossil fuels c. condensing water vapor d. vapor deposition in the atmosphere
- 28. Fill in the BlankIn a standard air conditioner or heat pump, the refrigerant ________ outside and ________ inside.
- 29. Fill in the BlankIn a pressure cooker, the food is cooked faster than in a normal pot because ________. a. the increased pressure breaks down the food molecules faster b. the water boils at a higher temperature c. the lower pressure breaks down the food molecules faster d. the water boils at a lower temperature
- 30. Fill in the BlankIn a standard refrigerator, it is the ________ that is most responsible for the transfer of heat. a. latent heat of refrigeration b. latent heat of fusion c. latent heat of vaporization d. latent heat of sublimation
- 31. Fill in the BlankAbsolute zero is approximately ________
- 32. Fill in the BlankNormal room temperature is closest to ________.
- 33. Fill in the BlankWhen a gas is compressed, ________. a. its internal energy will decrease b. its internal energy will increase c. the gas will expand d. internal energy will flow out of the gas
- 34. Fill in the BlankIf heat flows into a system, ________. a. the system will be able to do more work b. the system will be able to do less work c. the work capacity of the gas is not affected
- 35. Open EndedWhat/ where is the neutral layer in a beam that supports a load?
- 36. Open EndedIf the linear dimensions of an object are doubled, by how much does the surface area increase? By how much does the volume increase? (scaling)
- 37. Open EndedWhy can small creatures fall considerable distances without injury while people need parachutes to do the same?
- 38. Open EndedWhere do tension and compression occur?
- 39. Open EndedI- beam use?
- 40. Open Endeddensity
- 41. Open EndedHooke's Law
- 42. Open Endedpressure
- 43. Open Endedbuoyant force
- 44. Open Endedarchimedes priciple
- 45. Open Endedprinciple of flotation
- 46. Open EndedPascal's principle
- 47. Open Endedsurface tension
- 48. Open Endedcapillarity
- 49. Open Endedatmospheric pressure
- 50. Open Endedbarometer
- 51. Open EndedBoyle's Law
- 52. Open EndedArchimedes principle (air)
- 53. Open EndedBernoulli's principle
- 54. Open Endedplasma
- 55. Open Endedtemperature
- 56. Open Endedheat
- 57. Open Endedinternal energy
- 58. Open Endedspecific heat capacity
- 59. Open Endedscaling
- 60. Open EndedBrownian motion
- 61. Open Endedactual pressure from a pressure gauge?
- 62. Open EndedPressure under water
- 63. Open Endedpressure and liquid depth
- 64. Open Endedideal gas law
- 65. Open Endedconduction
- 66. Open Endedconvection
- 67. Open Ended(electromagnetic) radiation
- 68. Open Endedterrestrial radiation
- 69. Open Endednewtons law of cooling
- 70. Open EndedGreenhouse effect
- 71. Open Endedsolar constant
- 72. Open Endedsolar power
- 73. Open EndedHeat transfer P=
- 74. Open Endedfrequency ex. medical ultrasounds are usually 5 mHz. Period?
- 75. Open EndedVelocity
- 76. Open Endedamplitude = a
- 77. Open EndedEM spectrum
- 78. Open Endedmost biologically damaging waves?
- 79. Open Endedlatent heat
- 80. Open Endedevaporation
- 81. Open Endedsublimation
- 82. Open Endedcondensation
- 83. Open Endedhumidity
- 84. Open Endedboiling
- 85. Open Endedregelation
- 86. Open Ended1st law of thermodynamics
- 87. Open Endedadiabatic process
- 88. Open Endedtemperature inversion
- 89. Open Ended2nd law of thermodynamics
- 90. Open Endedheat engine
- 91. Open Endedideal efficiency
- 92. Fill in the Blanka cannon recoils while firing a cannonball. The speed of the cannon's recoil is relatively small because the ________. a. momentum is mainly concentrated in the cannonball b. force against the cannon is smaller than against the ball c. momentum of the cannon is smaller d. cannon has much more mass than the cannonball
- 93. Open EndedA moving 5000-kg freight car collides with a 10,000-kg freight car at rest. They couple upon collision and move at 2 m/s. What was the initial speed of the 5000-kg car? a. 9 m/s b. 6 m/s c. 5 m/s d. 15 m/s
- 94. Fill in the BlankTruck A comes to a stop from 20 m/s by crashing into a haystack. Truck B comes to a stop from 20 m/s by crashing into a brick wall. Both trucks have the same mass. Compared to truck A, the impulse on truck B during the collision is ________. a. larger b. more concentrated c. the same d. smaller
- 95. Fill in the BlankAutomobile safety devices like padded dashboards and airbags work by ________. a. decrease average impulse by distributing it over a larger distance b. decreasing average force by extending the time of the collision c. decreasing average force by shortening the time of the collision d. decreasing the change in momentum involved
- 96. Fill in the BlankYou drop a blob of clay and a golf ball of equal mass onto a hard surface. The clay sticks to the surface, while the golf ball bounces. Compared to the impulse on the clay, the impulse on the golf ball is ________. a. smaller b. zero because the forces cancel out c. larger d. the same
- 97. Fill in the BlankA 1000 kg automobile is pushed a distance of 20 m with a force of 2500 N. The work done on the automobile is ________. a. 50 MJ b. 200 kJ c. 500 kJ d. 50 kJ
- 98. Fill in the BlankA 1000 kg automobile is pushed a distance of 20 m with a force of 2500 N. The speed of the car at the end of the 20 m will be ________. a. 5 m/s b. 25 m/s c. 40 m/s d. 10 m/s
- 99. Fill in the BlankThe primary energy source of the Earth is ________. fossil fuels geothermal energy radioactive elements in the core the sun
- 100. Fill in the BlankA 100 kg student carrying 25 kg of pumpkins runs up a 10 m high flight of stairs in 20 seconds. The average power exerted by the students during this time is ________. Correct! 625 W 125 W 1250 W 12.5 kW
- 101. Fill in the BlankA 60 W light bulb puts out 15 W of light and 45 W of heat. The efficiency of the bulb is ________. 15% Correct! 25% 45% 60%
- 102. Fill in the BlankWhen an ice skater wants to spin quickly, he will often pull his arms in close to his body. This results in ________. a larger angular momentum a smaller rotational speed a smaller angular momentum Correct! A smaller rotational inertia
- 103. Fill in the BlankIf you swing a ball on a string around your head in a circular motion at constant speed, ________. the net force on the ball is zero Correct! the string provides the centripetal force the centripetal force and the centrifugal forces cancel out the string provides the centrifugal force
- 104. Fill in the BlankTo turn a screw that is attached very tightly, it is best to use a screwdriver with a ________. Correct Answer wide handle long blade smooth handle You Answered long handle
- 105. Fill in the BlankIn order for an object to be in equilibrium, the Center of Mass must be located ________. as high as possible in the object vertically above the Center of Gravity horizontally level with the base of support Correct! vertically above the base of support
- 106. Fill in the BlankIf you are standing on a rotating platform (like a Merry-Go-Round), the further out from the center you stand, ________. Correct! the greater your tangential speed the greater your rotational speed the greater your angular speed the longer it will take you to go around once
- 107. Fill in the BlankIf you triple the distance between two objects, the gravitational force between them will be ________ the original value. Correct! 1/9 of 3 times 1/3 of 9 times
- 108. Fill in the BlankIf the mass of the Earth and the mass of the Moon were to both suddenly double, the gravitational force between them would ________. double stay the same still be balanced out by the centrifugal force between them Correct! quadruple
- 109. Fill in the BlankAstronauts in orbit around the Earth experience weightless conditions because ________. space does strange things to a person they are flying so fast as to overcome gravity Correct! they are in a state of free fall most orbits put them out of the reach of gravity
- 110. Open EndedWhen a star gravitationally collapses into a Black Hole, it sucks in all of the planets orbiting the original star. True Correct! False
- 111. Fill in the BlankIf a planet had one half of Earth's mass and one half of Earth's radius, the force of gravity on the surface of that planet would be ________ Earth's surface gravity. four times one quarter of one half of Correct! Twice
- 112. Fill in the BlankA lunar month is about 27 days. If the moon were farther from Earth than it is now, the length of the lunar month would be ________. less than 27 days the same less regular than it is now Correct! more than 27 days
- 113. Fill in the BlankWhen a projectile with negligible air resistance is thrown at an upward angle, ________. neither the horizontal nor the vertical speed stays constant Correct! the horizontal speed stays constant the vertical speed stays constant both the horizontal and vertical speeds stay constant
- 114. Fill in the BlankIn a circular satellite orbit, ________. the speed remains constant but the distance changes neither speed nor distance remain constant Correct! both the speed and distance remain constant the distance remains constant but the speed changes
- 115. Fill in the BlankIn an elliptical orbit, ________. a satellite moves fastest when it is far from the central body Correct! a satellite moves fastest when it is near the central body the kinetic energy of the satellite remains constant the gravitational potential energy of the satellite remains constant
- 116. Fill in the BlankIf a rocket is fired from Earth in a direction directly away from the Sun at a speed just above Earth's escape speed, the rocket will ________. Correct! end up orbiting the Sun eventually escape out solar system end up falling into the Sun burn up in the atmosphere
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