Heat Energy

Heat Energy

Multiple Select

Energy cannot be created nor destroyed, it just changes form.

• true

• false

Multiple Select

Heat can be lost or gained.

• true

• false

Multiple Select

Change in temperature can make a material expand or contract.

• true

• false

Multiple Select

Ice transfers its coolness to the coffee, making it easier to drink.

• true

• false

Multiple Select

An airconditioner cools a room by way of conduction.

• true

• false

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The sum of the kinetic and potential energies of all particles in an object.

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The fraction by which a material expands or contracts for every degree increase or decrease in temperature.

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The amount of heat that would change the temperature of a material a degree higher or lower.

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is the property of metals that allow it to transfer heat energy effectively.

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is achieved when bodies in contact cease to transfer heat and is manifested by a single temperature.

Multiple Choice

What is 42 °C in Kelvin (K)?

• -273 K

• 315 K

Multiple Choice

What is 4K in °C?

• -359

• -269

Multiple Choice

What is 1410 °C in K?

• 1683 K

• 1137 K

Multiple Choice

What is 1043 K in °C?

• 770 °C

• 1316 °C

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How much heat is required to raise the temperature of 2 kg water from 20° C to 22 °C?

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A steel rail to be used in a railroad project is 10 m long at 20 °C. How long will it be at a temperature of 30 °C? The coefficient of steel is 1.2 x 10^-5.