Unit 4: Thermal Energy

Which of the following pictures represents particles in a solid?

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• None of the options represent particle in a dolid.

The molecules of which of the following would have the most kinetic energy?

• an ice cube

• a glass of cold water

• boiling water

• a cup of warm tea

If you drop red hot metal into a pool of room temperature oil, what statements are true about heat transfer between the two objects?

• Heat flows from the oil into the metal.

• Heat flows from the metal into the oil.

• There is no heat flow between the metal and the oil.

• Heat flows back and forth between the metal and the oil simultaneously.

Temperature is a way to measure the ___________ energy of particles of matter.

• potential

• kinetic

• chemical

• electrical

Which of the following objects would be best at keeping its contents cold?

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Which of the following statements is not true about states of matter and kinetic energy?

• As temperature increases so does the kinetic energy.

• As the number of particles increases so does the kinetic energy.

• As temperature decreases, the particles move closer together.

• Fewer particles means there is more kinetic energy.

Select the graph that shows a steady increase in temperature as time passes.

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Which of the following is a factor that determines thermal energy?

• Mass

• Heat

• Transfer of thermal energy

• Conduction

Specific heat is

• The amount of thermal energy needed to raise the temperature of 1 kg of a substance by 1 degree celsius

• The amount of kinetic energy needed to raise the temperature of 4 kg of a substance by 3 degrees Fahrenheit

• The amount of heat required to raise 10 mg of a substance by 40 degrees celsius

• The amount of temperature to raise 1 kg of a substance by 1 degree Kelvin

What is a conductor?

• A material in which kinetic energy transfers easily

• A material in which kinetic energy does not transfer easily

• A material in which mass is transferred easily

• A material in which mass is not transferred easily