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- 1. Multiple Choice
The atomic number of krypton is 36. If the mass number of a krypton atom is 84, which table shows the number of subatomic particles inside and outside the nucleus of the krypton atom?
- 2. Multiple Choice
Atoms of which two elements have a combined total of 23 protons?
Sodium, Na, and magnesium, Mg
Boron, B, and carbon, C
Copper, Cu, and zinc, Zn
None of these
- 3. Multiple Choice
Particle W
Particle X
Particle Y
Particle Z
- 4. Multiple Choice
A student is trying to classify an unidentified, solid gray material as a metal or a nonmetal. Which question will best help the student classify the material?
Is the material malleable or ductile?
Does the material feel hard to the touch?
Will the material float in water?
Does the material feel rough or smooth?
- 5. Multiple Choice
4 carbon atoms, 11 hydrogen atoms, and 1 oxygen atom
7 carbon atoms, 14 hydrogen atoms, and 1 oxygen atom
7 carbon atoms, 11 hydrogen atoms, and 8 oxygen atoms
6 carbon atoms, 14 hydrogen atoms, and 3 oxygen atoms
- 6. Multiple Choice
Which statement best describes evidence that a chemical reaction occurs as a cake bakes?
the water in the cake batter evaporates
the cake rises as gas bubbles form in the baking cake
the cake takes the shape of the container in which it is baked
the water in the cake batter is used to keep the cake moist as it bakes
- 7. Multiple Choice
the mother moves forward, and the daughter moves backward with a greater acceleration
both move forward, but the mother moves with greater acceleration
the mother moves backward, and the daughter moves forward with a greater acceleration
both move backward, but the daughter moves with a greater acceleration
- 8. Multiple Choice
The diagrams show forces acting on a toy car as it moves to the right. Which diagram shows the toy car that will most likely accelerate to the right based on these conditions?
- 9. Multiple Choice
A large rock is motionless on a flat sidewalk. Which statement best explains why the rock remains motionless?
there are no forces acting on the rock
the only force acting on the rock is directed toward the sidewalk
the forces acting on the rock are all balanced
the sidewalk exerts an unbalanced force on the rock
- 10. Multiple Choice
A pitcher throws a ball toward a player holding a softball bat. The player uses the bat to hit the ball. The bat applies a 10 newton force to the ball. Which statement correctly describes the reaction force between the bat and the ball?
the reaction force is the force that causes the ball to move toward the bat
the reaction force is the force applied to the bat by the player holding the bat
the reaction force is the force that pulls the ball toward the ground
the reaction force is the force of the ball on the bat
- 11. Multiple Choice
- 12. Multiple Choice
moving at a constant speed
accelerating
moving toward the north
stopped
- 13. Multiple Choice
A student viewed the moon through binoculars one week after a new moon. Which image shows the phase of the moon that the student observed?
- 14. Multiple Choice
Diagram 1
Diagram 2
Diagram 3
Diagram 4
- 15. Multiple Choice
the magnetic attraction between Earth and the sun
potential energy stored in Earth that originated in the sun
the gravitational attraction between the sun and the Earth
electromagnetic energy from the sun pulling on Earth
- 16. Multiple Choice
the proposed law will protect the lake because plant roots between the wetland and the lake will stop pollution from entering th elake
the proposed law ill not protect the lake because animals that live in or near the lake will add pollution to the lake
the proposed law will not protect the lake because groundwater will carry pollution from the weland directly into the lake
the proposed law will protect the lake because the high elevation of the water table will block pollution from entering the lake
- 17. Multiple Choice
bright sun with no wind
partly cloudy with no wind
mostly sunny with light winds
overcast skies with strong winds
- 18. Multiple Choice
A tiger cub has a pattern of stripes on its fur that is similar to that of its parents. Where are the instructions stored that provide information for a tiger's fur pattern?
in cytoplasm inside cells
on genes within chromosomes
on the cell membrane
in the mitochondria
- 19. Multiple Choice
What are the main functions of the human skeletal system?
to support the body, protect the organs, produce blood cells, and store calcium
to regulate the composition of bodily fluids by removing metabolic wastes and retaining a balance of water, salt, and other nutrients
to regulate and maintain bodily functions by producing hormones and releasing them into the bloodstream
to enable the diffusion of oxygen into the bloodstream and the removal of carbon dioxide from the bloodstream
- 20. Multiple Choice
- 21. Multiple Choice
Researchers are studying lichens growing on trees in a forest ecosystem. At the beginning of the study, the researchers identified twelve lichen species in the forest. Later, a forest fire happened in the study area. The researchers returned to the area and found only six lichen species. Which inference is best supported from the researcher's observations?
most lichen species are unaffected by forest fire
the biodiversity in a forest increases after a fire
certain lichen species are better adapted to survive forest fires than others
forest fires will permanently remove certain species from the ecosystem
- 22. Multiple ChoiceWhat is found in the nucleus of atoms?Protons and electrons.Protons, neutrons, and electrons.Protons and neutrons.Neutrons and electrons.
- 23. Multiple ChoiceHow many valence electrons does Sodium (Na) have?1234
- 24. Multiple ChoiceEach row in the periodic table is called agroupperiodclusterunit
- 25. Multiple ChoiceEach column in the periodic table is called aperiodgroupclusterunit
- 26. Multiple ChoiceJack has a rock. The rock has a mass of 14g and a volume of 2cm3. What is the density of the rock?7 mL7 g/cm328 g/cm31/7 g/cm3
- 27. Multiple ChoiceWhich box has a higher density?Box ABox Bcannot be determinedthey are the same
- 28. Multiple ChoiceTotal distance divided by total time isaverage speedconstant speedinstantaneous speedacceleration
- 29. Multiple ChoicePushing a child on a swing is easier than pushing an adult on the same swing.1st Law2nd Law
- 30. Multiple ChoiceWhat is happening at A?StationaryAcceleratingSlower steady speed; moving away from the starting positionSteady speed; returning to start position
- 31. Multiple ChoiceWhat is happening at D?StationaryAcceleratingFast steady speed; moving away from the starting positionSlower steady speed; moving away from the starting position
- 32. Multiple ChoiceBiodiversity refers toextinct speciesthe variety of species on Earthnonrenewable resourcesthe rate of species decline
- 33. Multiple ChoiceA dichotomous key for insects is given. To what order does an insect with two pairs of scaly wings belong?ColeopteraHeteropteraDipteraLepidoptera
- 34. Multiple ChoiceA mountaineer is planning an expedition. He wants to follow the easiest possible path, which means he needs to find the most gentle slope up the mountain. Which route should the mountaineer choose?Route ARoute BRoute CRoute D
- 35. Multiple ChoiceWhat do close contour lines represent on a map?waterfallsteep areagradual areariver
- 36. Multiple ChoiceThe Great Rift Valley in Africa and the Mid-Atlantic Ridge were both created by this type of plate boundary.divergentconvergenttransformsubduction
- 37. Multiple ChoiceWhat is the most likely elevation of the mountain peak? (Contour interval is 100 m)1550 meters1652 meters1500 meters1700 meters
- 38. Multiple ChoiceDetermine the contour interval10 m20 m50 m100 m
- 39. Multiple ChoiceThe topographic map shows the location of a park ranger at Point X when a message is received that an injured hiker needs help at Point Z. Which of these is closest to the difference in elevation between the locations of the ranger and the injured hiker?2,050 m450 m910 m3,650 m
- 40. Multiple ChoiceWhat causes Earth's seasons?the tilt of Earth's axisEarth's rotationthe revolution of the MoonEarth's distance from the Sun
- Answer choicesTagsAnswer choicesTags