Matter Unit Lesson 14

What causes the particles inside a material to move faster?

• Removing energy

• Adding energy

• Keeping it in the dark

• Placing it in water

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What happens to particles when they lose energy?

• They move faster

• They move slower

• They disappear

• They change color

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What is the term used when materials take up more space due to heat?

• Contract

• Expand

• Freeze

• Melt

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What is an example of a material that expands when heated?

• Ice

• Metal

• Wood

• Plastic

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Why does sand feel hot on a summer day?

• It reflects sunlight

• It absorbs heat quickly

• It is made of metal

• It is wet

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Why might a wooden spoon feel cooler than a metal spoon in hot soup?

• Wood is a better conductor

• Metal is a better insulator

• Wood is a better insulator

• Metal is a better conductor

What is the opposite of expansion in materials?

• Melting

• Freezing

• Contracting

• Boiling

What is a real-life example of expansion and contraction?

• A balloon popping

• A car engine running

• A bridge expanding in the sun

• A tree growing

Which of the following is a good conductor of heat?

• Wood

• Plastic

• Copper

• Rubber

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Why is the handle of a cooking pot often made of an insulating material?

• To make it look nice

• To prevent heat from reaching your hand

• To make it heavier

• To conduct heat to the food

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