Heat

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Question 1

What is the SI unit of heat?

  • Joule

  • Watt

  • Newton

  • Calorie

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Question 2

Which of the following is the primary mode of heat transfer in solids?

  • Convection

  • Radiation

  • Conduction

  • Evaporation

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Question 3

Which material is the best conductor of heat?

  • Wood

  • Water

  • Iron

  • Plastic

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Question 4

What happens to the temperature of an object when it absorbs heat during a phase change?

  • The temperature increases

  • The temperature decreases

  • The temperature stays the same

  • The object stops absorbing heat

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Question 5

Which of the following is an example of heat transfer through radiation?

  • Heat from a stove is heating a pan

  • Heat from the sun warms the Earth

  • Heat from a heater warms the surrounding air

  • Heat from a metal spoon heating water

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Question 6

What is the specific heat capacity of a substance?

  • The heat required to change the temperature of the substance by 1°C

  • The amount of heat required to melt the substance

  • The heat required to convert the substance to gas

  • The amount of heat released when the substance cools down

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Question 7

Which of the following substances has a high specific heat capacity?

  • Copper

  • Water

  • Iron

  • Aluminum

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Question 8

What is the effect of increasing the temperature on the rate of heat transfer by conduction?

  • The rate of heat transfer decreases

  • The rate of heat transfer stays the same

  • The rate of heat transfer increases

  • The rate of heat transfer becomes unpredictable

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Question 9

In which of the following scenarios would convection occur?

  • Heat from a metal spoon is heating a pot of soup

  • Warm air rises and cold air sinks in the atmosphere

  • Heat from a stove is heating a pan

  • Heat from the sun warms the Earth’s surface

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Question 10

What happens to the volume of a gas when it is heated at constant pressure?

  • The volume increases

  • The volume decreases

  • The volume stays the same

  • The volume becomes unpredictable

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Tags:
Physics

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