Unit 2: Lesson 1 Particles in Motion

The energy of motions is called _______ energy.

• magnetic

• kinetic

• decreased

• increased

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NGSS.MS-PS3-1

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Temperature is a measure of ____ of the particles in an object.

• the difference between the potential energy and kinetic energy

• the sum of the potential energy and kinetic energy

• the average potential energy

• the average kinetic energy

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NGSS.MS-PS1-4

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When a substance is heated, the particles gain energy and move apart, increasing the volume. The mass of the substance being heated _______.

• increases

• decreases

• stays the same

• varies unpredictably

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NGSS.MS-PS1-5

When temperature increases, average _____ increases.

• potential energy

• kinetic energy

• gravitational potential energy

• chemical energy

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NGSS.MS-PS1-4

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A liquid thermometer works because liquid ____ when warmed.

• expands

• contracts

• solidifies

• condenses

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NGSS.MS-PS1-4

Most highway bridges are built with expansion joints that can move back and forth. What is the reason for this?

• The bridge expands and contracts as the weather changes. The joints make sure the bridge doesn't fall apart.

• The joints do nothing. they are just a nice design.

• If a bridge has expansion joints it will fall apart.

• The expansion joints are meant to help break the bridge.

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NGSS.MS-PS3-3

Adding energy to water causes the water particles to...

• speed up

• slow down

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NGSS.MS-PS1-4

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Kinetic energy is what type of energy?

• chemical

• electric

• motion

• sound

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The faster the particles move, the less kinetic energy there is.

• True

• False

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NGSS.MS-PS3-1

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Thermal ______ happens when particles motions increases and causes the particles to occupy more volume

• contraction

• expansion

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NGSS.MS-PS1-4