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7.MS-PS3-5
Test Description: 7.MS-PS3-5
Instructions: Answer all questions to get your test result.
1) Why does an object slow down?
A
some of its energy was stored away to be used later
B
it transferred some of its energy somewhere
C
some of its energy evaporated
D
it gained energy from somewhere
2) What happens to liquid water molecules when they gain energy?
A
they slow down
B
the move closer together
C
they stop moving
D
they speed up
3) What is a common way to transfer energy away from water molecules?
A
spin the water around really fast
B
heat the water
C
add salt to the water
D
cool the water
4) Two identical soccer balls can have different amounts of kinetic energy if...
A
they are traveling at the same speed, but are filled with different gases
B
they are on a shelf at different heights off the ground
C
they are traveling at different speeds
D
one is old and one is brand new
5) What must happen in order to cause an object to start moving?
A
it has to gain energy from something
B
it has to cool down
C
it has to transfer energy to something
D
it has to gain mass
6) Outer space has no air molecules. Therefore....
A
a solitary object traveling through space will not change its speed
B
a solitary object traveling through space will eventually slow down
C
a solitary object traveling through space will speed up
D
a solitary object traveling through space will heat up
7) How is the movement of water molecules in liquid water different from their movement in ice?
A
their speed doesn't change, but how close they are to each other does
B
they move slower when the water is liquid
C
they move faster when the water is ice
D
they move faster when the water is liquid
8) When a ball is kicked, it gains most of its energy from....
A
the ground
B
the person that kicked it
C
the Sun
D
the air
9) 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
10) Rube Goldberg Machines rely on _____ in order to work
A
different states of matter
B
conservation of mass
C
heating and cooling
D
energy transfers
*select an answer for all questions
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