7.MS-PS3-5 Question Preview (ID: 59673)
7.MS-PS3-5.
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When a ball is kicked, it gains most of its energy from....
a) the air
b) the ground
c) the Sun
d) the person that kicked it
How is the movement of water molecules in liquid water different from their movement in ice?
a) they move faster when the water is ice
b) they move slower when the water is liquid
c) they move faster when the water is liquid
d) their speed doesn't change, but how close they are to each other does
Outer space has no air molecules. Therefore....
a) a solitary object traveling through space will eventually slow down
b) a solitary object traveling through space will not change its speed
c) a solitary object traveling through space will speed up
d) a solitary object traveling through space will heat up
What must happen in order to cause an object to start moving?
a) it has to gain energy from something
b) it has to transfer energy to something
c) it has to cool down
d) it has to gain mass
Two identical soccer balls can have different amounts of kinetic energy if...
a) they are on a shelf at different heights off the ground
b) they are traveling at the same speed, but are filled with different gases
c) one is old and one is brand new
d) they are traveling at different speeds
What happens to liquid water molecules when they gain energy?
a) they slow down
b) they speed up
c) the move closer together
d) they stop moving
What is a common way to transfer energy away from water molecules?
a) spin the water around really fast
b) heat the water
c) cool the water
d) add salt to the water
Why does an object slow down?
a) it transferred some of its energy somewhere
b) it gained energy from somewhere
c) some of its energy evaporated
d) some of its energy was stored away to be used later
Why do hot air balloons inflate when the flame is ignited?
a) the air molecules gain energy and move further apart
b) the air turns into a gas
c) the air turns into helium when it is heated
d) the air molecules transfer energy to the flame
Rube Goldberg Machines rely on _____ in order to work
a) conservation of mass
b) energy transfers
c) different states of matter
d) heating and cooling
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