Physical Science Chapter 9 Review Question Preview (ID: 49769)


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Kilo- is a prefix that means
a) one thousandth
b) one thousand
c) one hundredth
d) one hundred

In an acceleration graph showing speed versus time, a straight line shows the acceleration is
a) changing
b) constant
c) increasing
d) decreasing

The moon accelerates because it is
a) in a vacuum in space
b) continuously changing direction
c) constantly increasing its speed of orbit
d) a very large sphere

If the speed of an object does NOT change, the object is traveling at a
a) average speed
b) increasing speed
c) decreasing speed
d) constant speed

The International System of Units is used
a) only in France
b) in most of Europe
c) only in the United States
d) all over the world

As Earth orbits the sun, it is moving about
a) 30 km/h
b) 30 km/s
c) 300 km/h
d) 300 km/s

To determine the acceleration rate of an object, you must calculate the change in speed during each unit of
a) velocity
b) deceleration
c) motion
d) time

Speed equals distance divided by
a) velocity
b) time
c) motion
d) size

The steepness of a line on a graph is called the
a) vertical axis
b) slope
c) run
d) rise

A runner rounding a curve on a track at a constant speed is an example of what type of acceleration?
a) changing direction
b) instantaneous speed
c) decreasing velocity
d) increasing velocity

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