Understanding Heat Flow

What is heat flow?

• The transfer of thermal energy due to a temperature difference.

• The measurement of temperature in a system.

• The process of cooling down a substance.

• The conversion of energy into mass.

How does heat move from one object to another?

• Heat can only be transferred in a vacuum.

• Heat moves through conduction, convection, and radiation.

• Heat moves only through conduction.

• Heat is transferred by the movement of electrons.

Can you name a way heat can travel?

• Radiation

• Evaporation

• Condensation

• Conduction

What happens to ice when it gets warm?

• Ice melts into water.

• Ice turns into steam.

• Ice becomes a solid block.

• Ice evaporates into air.

Why do we wear warm clothes in winter?

• To look fashionable during the season.

• To protect against rain and snow.

• To keep our bodies warm and prevent heat loss.

• To avoid getting sunburned in winter.

What is an example of something that keeps heat in?

• A metal conductor

• A cotton shirt

• Insulation material

• A glass window

What happens to a metal spoon in hot soup?

• The metal spoon becomes invisible.

• The metal spoon melts.

• The metal spoon cools down.

• The metal spoon becomes hot.

How does the sun warm the Earth?

• The sun warms the Earth by emitting energy that is absorbed by the Earth's surface.

• The sun warms the Earth by creating clouds that trap heat.

• The sun warms the Earth by reflecting light from the moon.

• The sun cools the Earth by blocking heat from escaping.

What do we call the movement of hot air?

• Evaporation

• Convection

• Conduction

• Radiation

Why do we feel warm near a fire?

• We feel warm near a fire because of the smoke.

• We feel warm near a fire due to the light it produces.

• We feel warm near a fire because it attracts insects.

• We feel warm near a fire due to the heat emitted by the fire.