Basic mechanism heat transfer

What is the definition of CONDUCTION?

• When heat is transferred from objects like rays of light or electromagnetically.

• A hot liquid or air that expands, becomes less dense, and rises or becomes more dense, and sinks.

• When heat transfers from objects that are touching.

• When heat transfers through the heater or AC in your house.

• I don't know? Why? 😢

What is the definition of CONVECTION?

• When heat transfers through the heater or AC in your house.

• When heat transfers from objects that are touching.

• A hot liquid or air that expands, becomes less dense, and rises or becomes more dense, and sinks.

• Hot liquid or air that expands, becomes less dense, and rises or becomes more dense, and sinks.

• I don't know? Why? 😢

What is the definition of RADIATION?

• Hot liquid or air that expands, becomes less dense, and rises or becomes more dense, and sinks.

• When heat is transferred from objects like rays of light or electromagnetically.

• When heat transfers from objects that are touching.

• When heat transfers through the heater or AC in your house.

• I don't know? Why? 😢

What kind of heat transfer happens when the sun is heating your body?

• Conduction
• Radiation
• Convection
• Density

What heat transfer happens when you burn your hand by touching a fire?

• Radiation

• Conduction

• Convection

• I don't know!!

When a pot is touching a stove that is on, what heat transfer is happening?

• I don't know!!

• Radiation

• Conduction

• Convection

This is a lava lamp. When the light bulb heats the wax, the wax rises. When the wax cools, it falls. This cycle of rising/falling is an example of:

• Conduction.
• Convection.
• Radiation.

Heat transfers from an area of ____temperature to an area of ___ temperature.

• High to low

• Low to high

• High to high

• It can travel high to low and low to high.

The sun shines down on this family as the play on the beach. What heat transfer mode is happening?

• Conduction

• Convection

• Radiation

A group of friends gather around a fire to stay warm. What heat transfer mode is happening?

• Conduction

• Convection

• Radiation