6.9A/B Thermal Energy Transfer Review

What kind of heat transfer is occurring when the sun warms the sand?

• Conduction

• Convection

• Radiation

• All of them

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Which of the following best describes CONVECTION?

• When heat is transferred through waves.

• When heat is transferred through objects that are touching.

• The movement of gas or liquid in which warmer parts move up and the colder parts moves down.

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Heat transfers from an area of ________ temperature to an area of _______ temperature.

• high to low

• low to high

• high to high

• low to low

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This method of heat transfer happens through electromagnetic waves.

• Conduction

• Convection

• Radiation

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Conduction is heat transfer by

• touch.

• currents.

• waves.

Which sentence explains why a cold metal spoon placed in a pot of boiling water becomes hot?

• Thermal energy is transferred from the spoon to the water.
• Thermal energy is transferred from the water to the spoon.
• Thermal energy in the water is transformed into kinetic energy in the spoon.
• Thermal energy in the spoon is transformed into kinetic energy in the water.

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The sun warming your skin is an example of heat transfer through 

• conduction
• convection
• radiation
• thermal electricity

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The baby chickens are kept warm from the heat lamps demonstrates this type of heat transfer. 

• conduction
• convection
• radiation

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Four metal cubes, each with a different starting temperature, are placed together touching. Which of the following describes way the thermal energy will most likely flow? (There may be other ways that it can flow, but only one of the answers below is true)

• Cube #4 to Cube #2

• Cube #1 to Cube #2

• Cube #3 to Cube #4

• Cube #1 to Cube #3

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NGSS.MS-PS1-4

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Different materials are tested to see which one transfers the most heat energy. Identical containers of different materials, were filled with hot water, and the temperature of the water was measured and recorded over time. Based on the graph of the time and temperature , which material was most effective at transferring thermal energy?

• Material 1

• Material 2

• Material 3

• Material 4

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