Heat vs Temperature

What is temperature defined as in physics?

• The heat content of a substance

• The speed at which molecules vibrate

• The average kinetic energy of its vibrating molecules

• The total kinetic energy of vibrating molecules

Why does a single particle not have a temperature?

• Because it does not vibrate

• Because temperature is a macroscopic property

• Because it cannot be measured

• Because it has no kinetic energy

What happens during evaporation at room temperature?

• All water molecules escape

• Only the slowest moving molecules escape

• No molecules can escape

• Only the fastest moving molecules escape

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How does the mass of a molecule affect its vibration?

• Mass does not affect vibration

• Heavier molecules vibrate faster

• Lighter molecules vibrate faster

• Only heavy molecules vibrate

What is the difference between heat and temperature?

• Heat affects only liquids, temperature affects solids, liquids, and gases

• They are the same

• Temperature is the total energy, and heat is the average energy

• Heat is the total kinetic energy, and temperature is the average kinetic energy

Why does the ocean have more heat than a cup of coffee?

• Because it is larger

• Because it has more molecules

• Because it is colder

• Because it absorbs sunlight

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What role does the ocean play in climate change?

• It has no effect

• It cools the Earth

• It only affects marine life

• It acts as a large heat reservoir

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How does an air conditioner cool a room?

• By removing heat from the room

• By circulating the existing air

• By adding cold air

• By lowering the room's humidity

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What is the principle behind a heat pump?

• It warms the air by adding moisture

• It cools the air by removing moisture

• It moves heat from a cooler to a warmer area

• It generates heat from electricity

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Why is it important to not leave the door open when the air conditioner is on?

• To cool the whole neighborhood

• To save electricity

• To prevent insects from entering

• To keep the cool air inside