6th-T6 L3: Heat & Materials

Open Ended

When divers explore ocean waters, the temperatures they encounter can be very cold. Describe how you think the wetsuit keeps the diver warm in cold water.

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A ​

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is a material that conducts heat well.

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conductor

insulator

semiconductor

Multiple Choice

• Good ________ are materials that can transfer heat out very easily.

• conductors

• insulators

• semiconductors

Multiple Choice

Which are examples of good conductors?

• Glass
• Plastic
• Metals such as silver
• Wood

Dropdown

​

Select answer

such as silver are good conductors because heat easily conducts out.

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​

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are materials that do not conduct heat well.

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Insulators

Conductors

Semiconductors

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Good ​

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are materials that do not transfer heat easily.

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insulators

conductors

transmitters

Multiple Choice

Which are examples of good insulators?

• Metal, stone, and water

• Copper, iron, and steel

• Wood, rubber, plastic, glass, and air

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Good ​insulators include ​

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. Wool blankets slow the transfer of heat out of your body.

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air and wool

copper and aluminum

glass and plastic

Word Cloud

When do you want to use good conductors? 

Open Ended

Why does metal feel colder than plastic even when both materials are at the same temperature?

Multiple Choice

True or false: When a substance or material is heated, its temperature rises but the temperature does not rise at the same rate for all materials. 

• False
• True

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Different materials require different amounts of ​

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to have the same ​

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increase.

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energy

temperature

pressure

Multiple Select

What makes a popcorn kernel pop?

• water droplet inside

• pressure

• gas

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​

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is the expansion of matter when it is heated.

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Thermal expansion

Expansion

Contraction

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When matter is heated it ​

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, when matter is cooled it ​

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.

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expands

contracts

melts

changes color

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When surfaces exert friction on each other, their thermal energy ​

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.

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increases

decreases

remains constant

Multiple Choice

If a car brakes suddenly, its tires leave skid marks on the road. The marks are oils in the asphalt that have been heated. What causes the heating?

• Heat generated by the brakes
• Friction between the tires and the road surface

Multiple Choice

When an object slows down due to friction, what energy transformation takes place?

• Kinetic energy is transformed to thermal energy

• Friction energy is transformed into heat energy.