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Motion Review Physical Science
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1. True or False… Motion is measured relative to a reference point.
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TRUE Motion is measured relative to a reference point.
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2. True or False… Average speed is the rate at which an object is moving at a given instant.
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False Instantaneous speed is the rate at which an object is moving at a given instant.
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3. True or False… A meter is a place or object used for comparison to determine if something is in motion.
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FALSE A reference point is a place or object used for comparison to determine if something is in motion.
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4. True or False… If a toy car traveling at 10 cm/s passes a toy car moving at 10 cm/s in the opposite direction, both cars have the same velocity.
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FALSE If a toy car traveling at 10 cm/s passes a toy car moving at 10 cm/s in the opposite direction, both cars have the same speed.
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5. True or False… A straight diagonal line on a distance vs. time graph indicates constant speed.
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TRUE A straight diagonal line on a distance vs. time graph indicates constant speed.
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6. True or False… A horizontal line on a distance vs. time graph means that the object is at rest.
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TRUE A horizontal line on a distance vs. time graph means that the object is at rest.
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7. True or False… A child riding on a merry-go-round is accelerating because his direction is changing.
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TRUE A child riding on a merry-go-round is accelerating because his direction is changing.
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8. True or False… The SI unit of velocity is the meter per second per second.
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FALSE The SI unit of acceleration is the meter per second per second.
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9.True or False… A straight line on a graph of speed vs. time means that the object has a constant acceleration.
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TRUE A straight line on a graph of speed vs. time means that the object has a constant acceleration.
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10. True or False… The steepness of a line graph is referred to as the run.
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FALSE The steepness of a line graph is referred to as the slope.
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11. A reference point is assumed to be _______, or not moving.
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11. A reference point is assumed to be __stationary_____, or not moving.
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12. A change in an object’s position relative to a reference point is called _______________.
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12. A change in an object’s position relative to a reference point is called ____motion___________.
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13. When riding a bicycle past a building, you are not moving relative to the ____________.
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13. When riding a bicycle past a building, you are not moving relative to the ___bicycle_________.
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14. Suppose you are sitting in a car at a red light when a car moving toward the north begins to pass you. If you use the passing car as a reference point, the direction in which you appear to be moving is toward the _____________.
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14. Suppose you are sitting in a car at a red light when a car moving toward the north begins to pass you. If you use the passing car as a reference point, the direction in which you appear to be moving is toward the south.
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15. The distance traveled by a moving object per unit of time is called ____________________.
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15. The distance traveled by a moving object per unit of time is called ______speed_____.
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16. The basic SI unit of length is the _________________.
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16. The basic SI unit of length is the meter.
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17. Speed that does not change is referred to as ____________ speed.
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17. Speed that does not change is referred to as constant speed.
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18. The statement that the motion of a hurricane is 20 km per hour in an easterly direction is a description of the hurricane’s _______________.
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18. The statement that the motion of a hurricane is 20 km per hour in an easterly direction is a description of the hurricane’s velocity.
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19. A speed of 15 km per hour is abbreviated as 15 _____
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19. A speed of 15 km per hour is abbreviated as 15 km/h.
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20. Acceleration is the rate of change in _______________.
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20. Acceleration is the rate of change in velocity.
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