 # Chapter 3 Exam Review

`Physical Science Chapter 3 Exam`
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`Modified True/False`
`Indicate whether the statement is true or false.  If false, change the identified word or phrase to make the statement true.`
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`____          1.         Displacement includes both distance and direction. _________________________`
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`____          2.         Motion occurs when there is a change in speed. _________________________`
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`____          3.         If you were trying to get out of the way of a storm, you would need to know the speed at which it was moving. _________________________`
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`____          4.         The total distance traveled divided by the constant speed is the average speed. _________________________`
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`____          5.         The relationship s = d/t can be used to calculate speed, distance or time. _________________________`
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`____          6.         Acceleration occurs when velocity changes. _________________________`
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`____          7.         If you roll a ball up a hill, it undergoes positive acceleration. _________________________`
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`____          8.         When you push on a sled and it begins to go downhill, you cause negative acceleration. _________________________`
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`____          9.         Acceleration is calculated by dividing change in speed by total time. _________________________`
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`____          10.       When the forces acting on an object are unbalanced, the net force is zero. _________________________`
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`____          11.       An object in motion at a constant velocity will change its motion only if a balanced force acts on it. _________________________`
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`____          12.       In a car crash, inertia could cause you to crash into the windshield. _________________________`
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`Multiple Choice`
`Identify the choice that best completes the statement or answers the question.`
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`____          13.       If you ride your bicycle down a straight road for 500 m then turn around and ride back, your distance is ____ your displacement.`
 `a.` `greater than` `c.` `less than` `b.` `equal to` `d.` `can’t determine`
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`____          14.       Motion is a change in ____.`
 `a.` `time` `c.` `velocity` `b.` `speed` `d.` `position`
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`____          15.       The speed you read on a speedometer is ____.`
 `a.` `instantaneous speed` `c.` `average speed` `b.` `constant speed` `d.` `velocity`
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`____          16.       3 m/s north is an example of a(n) ____.`
 `a.` `speed` `c.` `position` `b.` `velocity` `d.` `acceleration`
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`____          17.       The relationship among speed, distance, and time is ____.`
 `a.` `t = s/d` `c.` `s = dt` `b.` `d = t/s` `d.` `s = d/t`
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`____          18.       A single point on a distance-time graph tells the ____.`
 `a.` `instantaneous speed` `c.` `constant speed` `b.` `average speed` `d.` `average velocity`
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`____          19.       A merry-go-round horse moves at a constant speed but at a changing ____.`
 `a.` `velocity` `c.` `inertia` `b.` `balanced force` `d.` `unbalanced force`
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`____          20.       Acceleration is rate of change of ____.`
 `a.` `position` `c.` `velocity` `b.` `time` `d.` `force`
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`____          21.       If you ride your bike up a hill, then ride down the other side, your acceleration is ____.`
 `a.` `all positive` `c.` `first positive, then negative` `b.` `all negative` `d.` `first negative, then positive`
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`____          22.       The equation used to find acceleration is a = ____.`
 `a.` `vf – vi/t` `c.` `vi – vf /t` `b.` `v/t` `d.` `vi + vf/t`
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`____          23.       A horizontal line on a velocity/time graph shows ____ acceleration.`
 `a.` `positive` `c.` `changing` `b.` `negative` `d.` `zero`
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`____          24.       Inertia varies depending on ____.`
 `a.` `force` `c.` `velocity` `b.` `mass` `d.` `motion`
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`____          25.       Newton's first law of motion is also called the law of ____.`
 `a.` `mass` `c.` `force` `b.` `inertia` `d.` `constant velocity`
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`Completion`
`Complete each statement.`
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`      26.       ____________________ is a measure of how far an object has moved.`
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`      27.       The speed and direction with which an object moves is its ____________________.`
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`      28.       The distance an object travels per unit of time is ____________________.`
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`      29.       The slope of the distance-time graph gives the ____________________.`
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`      30.       Acceleration occurs when an object changes its ____________________ or ____________________ or both.`
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`      31.       An object changing its speed from 10 m/s to 3 m/s is undergoing ____________________ acceleration.`
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`      32.       As a car slows down approaching a red traffic light, its ____________________ is negative.`
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`      33.       When calculating acceleration, to find the change in velocity, you subtract the ____________________ velocity from the ____________________ velocity.`
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`      34.       If the forces acting on an object at rest are ____________________, the object will remain at rest.`
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`      35.       At the same speed, a bowling ball is harder to stop than a soccer ball because the bowling ball has greater ____________________.`
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`      36.       In the equation a = (Vf  – Vi)/t, Vf stands for _________________________.`
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`Physical Science Chapter 3 Exam`
`Answer Section`
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`MODIFIED TRUE/FALSE`
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`     1.                   ANS:  T                                                     PTS:   1          DIF:     Webb's Depth of Knowledge I`
`OBJ:                   1/1      STA:              PS1.1 CS2.1`
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`     2.                   ANS:  F, position`
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`PTS:                    1         DIF:               Webb's Depth of Knowledge I       OBJ:    1/1`
`STA:                   PS1.2 CS2.1`
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`     3.                   ANS:  F, velocity`
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`PTS:                    1         DIF:               Webb's Depth of Knowledge I       OBJ:    2/1`
`STA:                   PS1.2 CS2.1`
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`     4.                   ANS:  F, total travel time`
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`PTS:                    1         DIF:               Webb's Depth of Knowledge I       OBJ:    2/1`
`STA:                   PS1.1 CS1.1`
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`     5.                   ANS:  T                                                     PTS:   1          DIF:     Webb's Depth of Knowledge I`
`OBJ:                   2/1      STA:              PS1.1 CS2.1`
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`     6.                   ANS:  T                                                     PTS:   1          DIF:     Webb's Depth of Knowledge I`
`OBJ:                   4/2      STA:              PS1.1 CS2.1`
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`     7.                   ANS:  F, negative`
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`PTS:                    1         DIF:               Webb's Depth of Knowledge I       OBJ:    5/2`
`STA:                   PS1.1 CS2.1`
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`     8.                   ANS:  F, positive`
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`PTS:                    1         DIF:               Webb's Depth of Knowledge I       OBJ:    5/2`
`STA:                   PS1.1 CS2.1`
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`     9.                   ANS:  F, velocity`
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`PTS:                    1         DIF:               Webb's Depth of Knowledge I       OBJ:    6/2`
`STA:                   PS1.1 CS2.1`
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`     10.                 ANS:  F, balanced`
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`PTS:                    1         DIF:               Webb's Depth of Knowledge I       OBJ:    8/3`
`STA:                   PS1.1 CS2.1`
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`     11.                 ANS:  F, an unbalanced`
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`PTS:                    1         DIF:               Webb's Depth of Knowledge I       OBJ:    7/3`
`STA:                   PS1.1 CS2.1`
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`     12.                 ANS:  T                                                     PTS:   1          DIF:     Webb's Depth of Knowledge I`
`OBJ:                   9/3      STA:              PS1.1 CS2.1`
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`MULTIPLE CHOICE`
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`     13.                 ANS:  A                   PTS:   1                    DIF:    Webb's Depth of Knowledge I`
`OBJ:                   1/1      STA:              PS1.1 CS2.1`
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`     14.                 ANS:  D                   PTS:   1                    DIF:    Webb's Depth of Knowledge I`
`OBJ:                   1/1      STA:              PS1.1 CS2.1`
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`     15.                 ANS:  A                   PTS:   1                    DIF:    Webb's Depth of Knowledge I`
`OBJ:                   2/1      STA:              PS1.1 CS2.1`
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`     16.                 ANS:  B                    PTS:   1                    DIF:    Webb's Depth of Knowledge I`
`OBJ:                   2/1      STA:              PS1.1 CS2.1`
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`     17.                 ANS:  D                   PTS:   1                    DIF:    Webb's Depth of Knowledge I`
`OBJ:                   2/1      STA:              PS1.1 CS2.1`
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`     18.                 ANS:  A                   PTS:   1                    DIF:    Webb's Depth of Knowledge I`
`OBJ:                   3/1      STA:              PS1.1 CS2.1`
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`     19.                 ANS:  A                   PTS:   1                    DIF:    Webb's Depth of Knowledge I`
`OBJ:                   2/1      STA:              PS1.1 CS2.1`
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`     20.                 ANS:  C                    PTS:   1                    DIF:    Webb's Depth of Knowledge I`
`OBJ:                   4/2      STA:              PS1.1 CS2.1`
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`     21.                 ANS:  D                   PTS:   1                    DIF:    Webb's Depth of Knowledge I`
`OBJ:                   5/2      STA:              PS1.1 CS2.1`
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`     22.                 ANS:  A                   PTS:   1                    DIF:    Webb's Depth of Knowledge II`
`OBJ:                   6/2      STA:              PS4.3 CS2.1`
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`     23.                 ANS:  D                   PTS:   1                    DIF:    Webb's Depth of Knowledge I`
`OBJ:                   6/2      STA:              PS1.1 CS2.1`
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`     24.                 ANS:  B                    PTS:   1                    DIF:    Webb's Depth of Knowledge I`
`OBJ:                   8/3      STA:              PS1.1 CS2.1`
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`     25.                 ANS:  B                    PTS:   1                    DIF:    Webb's Depth of Knowledge I`
`OBJ:                   8/3      STA:              PS1.1 CS2.1`
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`COMPLETION`
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`     26.                 ANS:  Distance`
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`PTS:                    1         DIF:               Webb's Depth of Knowledge I       OBJ:    1/1`
`STA:                   PS1.1 CS2.1`
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`     27.                 ANS:  velocity`
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`PTS:                    1         DIF:               Webb's Depth of Knowledge I       OBJ:    2/1`
`STA:                   PS1.1 CS2.1`
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`     28.                 ANS:  speed`
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`PTS:                    1         DIF:               Webb's Depth of Knowledge I       OBJ:    2/1`
`STA:                   PS1.1 CS2.1`
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`     29.                 ANS:  speed`
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`PTS:                    1         DIF:               Webb's Depth of Knowledge I       OBJ:    3/1`
`STA:                   PS1.1 CS2.1`
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`     30.                 ANS:  speed, direction`
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`PTS:                    1         DIF:               Webb's Depth of Knowledge I       OBJ:    4/2`
`STA:                   PS1.1 CS2.1`
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`     31.                 ANS:  negative`
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`PTS:                    1         DIF:               Webb's Depth of Knowledge II      OBJ:    6/2`
`STA:                   PS1.1 CS2.1`
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`     32.                 ANS:  acceleration`
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`PTS:                    1         DIF:               Webb's Depth of Knowledge I       OBJ:    5/2`
`STA:                   PS1.1 CS2.1`
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`     33.                 ANS:  initial, final`
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`PTS:                    1         DIF:               Webb's Depth of Knowledge II      OBJ:    6/2`
`STA:                   PS1.1 CS2.1`
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`     34.                 ANS:  balanced`
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`PTS:                    1         DIF:               Webb's Depth of Knowledge I       OBJ:    8/3`
`STA:                   PS1.1 CS2.1`
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`     35.                 ANS:  `
`inertia`
`mass`
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`PTS:                    1         DIF:               Webb's Depth of Knowledge II      OBJ:    8/3`
`STA:                   PS1.1 CS2.1`
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`     36.                 ANS:  final velocity`
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`PTS:                    1         DIF:               Webb's Depth of Knowledge I       OBJ:    2/1`
`STA:                   PS1.1 CS2.1`