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Multiple Choice
Identify the choice that best completes the statement or answers the question.
Figure 1-1
1. What type of graph is represented by Figure 1-1?
a. bar graph
b. line graph
circle graph
none of the above
2. What are the building blocks of all matter?
a. forces
b. atoms
magnetic fields
kinetic and potential energy
3. Neurons detecting stimuli in the skin and eyes are ______.
a. interneurons
c. sensory neurons
b. Motor neurons
d. synapses
4. What happens when the data in an investigation do not support the original hypothesis?
a. The scientist gives up and starts an investigation on a new topic.
b. The data must be incorrect and are thrown out.
c. The hypothesis is revised.
d. The data are altered so that they support the original hypothesis.
5. What is a hot, dry biome called?
a. desert
b. tundra
Coral reef
6. One kilometer equals 1000 meters. What does the prefix kilo- mean?
a. 1
c. 100
b. 10
d. 1000
7. Energy from hot magma is called
a. magnetic
b. geothermal
_____ 8 Burning fossil fuels like natural gas and coal releases___
a. Nitrogen, oxygen and carbon compounds
b. Ultraviolet radiation
c. Sulfurous smog
d. Trapped air layers
9. Displacement vectors of 4 km south, 2 km north, 5 km south, and 5 km north combine to a total displacement of
a. 16 km north
c. 6 km south
b. 11 km west
d. 2 km south
10. Budding, fission, and regeneration are forms of __________.
a. mutations
b. cell cycles
c. sexual reproduction
d. asexual reproduction
11. Instantaneous speed is measured
a. at the starting point.
b. when the object reaches its destination.
c. at a particular instant.
d. over the duration of the trip.
12. A car traveled 60 km in 2 hours, 84 km in the next 1 hour, and then 68 km in 2 hours before reaching its destination.
What was the car’s average speed?
a. 212 km/h
c. 148 km/h
b. 42 km/h
d. 1060 km/h
13. Chromosomes are doubled during ____.
a. anaphase
b. metaphase
14. What is the speed of a bobsled whose distance-time graph indicates that it traveled 100 m in 25 s?
a. 4 m/s
c. 0.25 mph
b. 2500 m/s
d. 100 m/s
15. Any permanent change in a gene or chromosome.
a. fission
b. reproduction
16. A coral reef and an oak hickory forest are examples of a (n) _____.
a. niche
c. population
b. habitat
d. ecosystem
17. An object that is accelerating may be
a. slowing down.
b. gaining speed.
changing direction.
all of the above
18. Meiosis produces ______.
a. Cells with diploid chromosome number
b. Cells with identical chromosomes
c. Sex cells
d. Zygote
19. The SI unit of force is the
a. joule.
b. kilogram.
20. When an unbalanced force acts on an object,
a. the object’s motion does not change.
b. the object accelerates.
the weight of the object decreases.
the inertia of the object increases.
21. When a pair of balanced forces acts on an object, the net force that results is
a. greater in size than both forces combined.
b. greater in size than one of the forces.
c. equal in size to one of the forces.
d. equal to zero.
22. The forces acting on a falling leaf are
a. air resistance and fluid friction.
b. gravity and air resistance.
gravity and static friction.
weight and rolling friction.
23. An open parachute increases air resistance of a falling sky diver by
a. decreasing the weight of the diver.
c. increasing the terminal velocity.
b. increasing surface area.
d. reducing fluid friction.
24. Color blindness results from an allele that is ______.
a. dominant.
b. On Y chromosome
25. What is biomass energy?
a. The chemical energy stored in living things
b. The electromagnetic energy stored in living things
c. The nuclear energy stored in living things
d. The thermal energy stored in living things
26. Punnet squares are used to ________.
a. dominate
b. predict
On X chromosome
Present only in females
27. According to Newton’s second law of motion, the acceleration of an object equals the net force acting on the object
divided by the object’s
a. mass.
c. velocity.
b. momentum.
d. weight.
28. ______ are located on chromosomes.
a. DNA codes
b. pedigree
29. The energy of motion is called
a. kinetic energy.
b. potential energy.
thermal energy.
30. A small 20-kilogram canoe is floating downriver at a speed of 2 m/s. What is the canoe’s kinetic energy?
a. 22 J
c. 80 J
b. 40 J
d. 400 J
31. ________ is the death of all the members of a species.
a. evolution
b. extinction
c. gradualism
d. variation
32. Which of the following increases when an object becomes warmer?
a. chemical energy
b. elastic potential energy
c. nuclear energy
d. thermal energy
33. The energy stored in gasoline is
a. chemical energy.
b. electromagnetic energy.
mechanical energy.
nuclear energy.
34. Which of the following statements is true according to the law of conservation of energy?
a. Energy cannot be created.
b. Energy cannot be destroyed.
c. Energy can be converted from one form to another.
d. all of the above
35. The mechanical energy of an object equals its
a. chemical energy plus its nuclear energy.
b. kinetic energy plus its potential energy.
c. nuclear energy.
d. thermal energy.
Figure 15-1
The kinetic energy of the pendulum bob in Figure 15-1 increases the most between locations
a. A and B.
c. B and D.
b. A and C.
d. C and D.
37. Fossil fuels currently account for the majority of the world’s energy use because they are
a. distributed evenly throughout the world.
b. nonpolluting.
c. relatively inexpensive and readily available.
d. renewable energy resources.
38. A drawback of solar energy is that it
a. cannot be converted directly into electrical energy.
b. depends on the climate.
c. produces water pollution.
d. is not a renewable resource.
39 . The study of Earth’s composition, structure, and history is called
a. seismology.
c. chemistry.
b. physics.
d. geology.
40. Forces that shape Earth’s surface can be divided into
a. constructive and physical.
b. constructive and destructive.
c. chemical and destructive.
d. chemical and physical.
41. The three main layers of Earth’s interior are the
a. crust, core, and lithosphere.
b. crust, mantle, and core.
c. mantle, inner core, and outer core.
d. crust, mantle, and asthenosphere.
42. The hypothesis that the continents move slowly over Earth’s surface and once were joined into one supercontinent is
a. plate tectonics.
c. sea-floor spreading.
b. continental drift.
d. subduction.
____ 43.
The absolute age of an igneous rock found on a beach can be determined by using
a. radioactive isotopes.
c. the law of superposition.
b. fossils.
d. relative dating.
44. Geologists could use which of the following to compare the age of sedimentary rock layers in Bryce Canyon with
sedimentary rock layers in the Grand Canyon?
a. radioactive isotopes
c. relative dating
b. index fossils
d. all of the above
45. Which of the following climate changes may be affected by human activities?
a. ice age
c. global warming
b. El Niño
d. monsoon
46. ______is the careful use of resources to reduce damage to the environment.
c. Overgrazing
d. Deforestation
47. When humans recycle, they reduce the damage caused by _______.
Cutting trees
c. manufacturing
d. all of the above
48. A variation that helps an organism be better suited for its environment is a (n) __________.
c. hypothesis
d. species
49. Change in inherited characteristics over time is called _________________.
c. camouflage
d. evolution
Figure 1-1
50 Figure 1-1 shows how a steel ball moved during an experiment. Average speed is calculated by dividing total distance by
time. Did the steel ball speed up, slow down, or remain at the same speed throughout the experiment?
Continues to slow down
Continues to speed up
Speeds up then slows down
No change