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CI Investigation 4
Test Description: Particle motion thermal contraction/expansion
Instructions: Answer all questions to get your test result.
1) According to the kinetic-molecular theory, particles of matter
A
have different shapes.
B
are always fluid.
C
are in constant motion.
D
have different colors
2) According to the kinetic-molecular theory, which substances are made of particles?
A
liquids only
B
gases only
C
all matter except solids
D
all matter
3) If a substance is cooled, what happens to its particles?
A
they slow down and move closer together
B
the speed up and move closer together
C
they speed up and move farther apart
D
they slow down and move farther apart
4) What is expansion?
A
An increase in a materials volume when temperature increases.
B
An increase in the mass of a substance.
C
Is a decrease in a materials volume when temperature decreases .
D
The transfer of thermal energy between materials by the collisions of particles.
5) What is contraction?
A
A material through which thermal energy does not flow easily.
B
The movement of fluids in a cycle because of convection
C
A decrease in a materials volume when its temperature decreases
D
The movement of particles.
6) A substance is heated up and then allowed to cool down. What happens to the particles during this time period?
A
The particles collide more frequently and become more dense.
B
The particles move faster and expand, then slow down and contract.
C
The particles slow down and grow larger in size.
D
The particles move fast and expand, then slow down and compress.
7) Many objects, such as train tracks and road joints, are specifically designed to allow extra space for
A
thermal energy
B
thermal expansion
C
specific heat
D
insulators
8) The liquid in a thermometer rises when it is placed in the hot water because
A
the surrounding air is too warm.
B
loses heat from the hot water and contracts.
C
the liquid is boiling.
D
it gains heat from the hot water and expands.
9) When objects contract upon cooling
A
volume increases and density decreases.
B
volume decreases and density increases.
C
volume increases and density increases.
D
volume decreases and density decreases.
10) Alex noticed that a metal door that sticks on hot days does not stick when it cools off at night. This is because the metal contracts as it cools. The reason for this is that, as the metal cools, the particles:
A
merge together to form fewer atoms
B
slow down and move closer together
C
become smaller and take up less space
D
speed up and move farther apart
*select an answer for all questions
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