Lesson 1: Particles in Motion

The energy of motion is called __________________ energy

• kinetic

• potential

• geothermal

• gravitational

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NGSS.MS-PS3-1

NGSS.MS-PS3-5

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

NGSS.MS-PS3-4

Water has been left in a pot on a hot stove. Bubbles form throughout the liquid and rise to the top. Which type of change is this?

• boiling

• evaporation

• density

• condensation

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NGSS.MS-PS1-4

NGSS.MS-PS3-4

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

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Bars of different metals are all heated to 100°C to determine how their volume and length would be affected. Which statement describes the most likely outcome of this experiment?

• All of the volumes change and so do their lengths.

• All of the volumes change, but the lengths remain the same.

• The volumes and lengths do not change.

• All of the volumes change the same amount and the lengths remain constant.

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NGSS.MS-PS1-4

A liquid thermometer works because liquid ____ when warmed.

• expands

• contracts

• solidifies

• condenses

In which states of matter do particles move around?

• Solids, Liquids, and Gases

• Solids only

• Liquids and Gases only

• Gases only

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NGSS.MS-PS1-4

Particles move...

• In a predictable pattern

• In random motion

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NGSS.MS-PS1-4

The movement of particles from an area of higher concentration to an area of lower concentration

• diffusion

• wiggling

• expansion

• contraction