Multiple Choice
Identify the
letter of the choice that best completes the statement or answers the question.
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1.
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Newton’s first law of motion states________. a. | force equals
mass times acceleration | b. | a force will remain in motion unless a force acts on
it | c. | the attractive
forces between two masses | | |
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2.
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Newton’s second law show the relationship between
_______________. a. | force and
acceleration | c. | force, mass, and
acceleration | b. | force and mass | d. | force, mass, and velocity | | | | |
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3.
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Gravity is a _________ force. a. | balanced | c. | contact | b. | unbalanced | d. | noncontact | | | | |
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4.
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Friction __________ an object. a. | slows down | c. | spins | b. | speeds
up | d. | raises | | | | |
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Completion
Complete each sentence or
statement.
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Reviewing Vocabulary
Complete each sentence with the correct
vocabulary word.
friction | acceleration | Motion | force | work | Velocity | speed | inertia | Electomagnet | Newton | | | | | |
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5.
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__________ is done when a force moves an object over a distance.
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6.
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To
calculate the __________ of an object, divide the distance the object travels by the amount of
time it takes to travel that distance.
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7.
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__________ is a measure of an object’s speed and its
direction.
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8.
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Any
change in the speed or direction of an object is __________.
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9.
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A
__________ is a push or pull that acts on an object.
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10.
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__________ is a magnet that is powered by electricity.
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11.
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The
amount of force needed to accelerate a mass of 1 kg by a speed of 1 mps per second is a __________.
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12.
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__________ is a change in an object’s position.
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13.
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The
tendency of an object to remain at rest or to remain in motion is __________.
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14.
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Moving
the box over the board is opposed by the force of __________.
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Matching
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a. | simple
machines | f. | compound
machines | b. | fixed pulley | g. | balanced forces | c. | lever | h. | unbalanced
forces | d. | inclined plane | i. | air resistance | e. | wedge | | | | |
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15.
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a
simple machine that decteases the amount of force required to raise an object
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16.
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a
type of friction that opposes the motion of an object through the air
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17.
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tools
that make doing the same workeasier and that have few or no moving parts
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18.
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tools
that are made of a combination of simple machines
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19.
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a
simple machine made of stiff rods, beams, or poles that pivot around a point
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20.
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when
forces on an object are not of the same strength in opposite directions
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21.
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a
wheel with a groove along the edge
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22.
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forces of the same strength in opposite directions
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Short Answer - Bonus
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Checking Main Ideas
Answer the questions using complete
sentences.
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23.
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What
force makes drops of rain fall to the ground?
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24.
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Describe the advantages and disadvantages of using each inclined plane to raise the
same mass.
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Using Inquiry Skills
Answer the questions using complete
sentences.
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25.
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Use
Variables The formula  describes the
amount of work done ( ) when a force of 
newtons moves an object a distance of  meters. Use the
formula to calculate the amount of work done when a force of 200 newtons moves an object 4 meters
across a flat surface. (Use the unit “joules” in your answer.)
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26.
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Communicate Which type of simple machine is being used to lift the box?
Which side of the simple machine will move a greater distance in order for the work to be
done?
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Essay - Bonus
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Using Inquiry Skills
Answer the questions using complete
sentences.
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27.
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Compare What is the advantage of a single fixed pulley on an
object?
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Thinking Critically
Answer the questions using complete
sentences.
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28.
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Synthesize Electrons flow between the positive and negative terminals of
a battery when a path is created. Why might the strength of the electromagnet begin to decrease after
a few hours?
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29.
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Evaluate You and a friend watch a tug-of-war contest between two
classmates. After a few seconds, the rope is pulled tight and does not appear to be moving. Your
friend says that the rope is not moving because the classmates have the same weight. Is your
friend’s description accurate? Explain your answer.
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