CONDUCTION,CONVECTION AND RADIATION

Front

What is the original source of most of the energy that people use?

Back

Energy that reaches Earth by radiation from the sun.

Front

What type of heat transfer creates currents in water?

Back

Convection.

Front

Does higher temperature mean faster moving molecules?

Back

True.

Front

What is an example of heat being transferred by conduction?

Back

An ice cube melting in a person’s hand.

Front

What is the definition of convection?

Back

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

Front

What is conduction?

Back

The transfer of heat through direct contact between materials.

Front

What is radiation?

Back

The transfer of energy through electromagnetic waves.

Front

How does convection differ from conduction?

Back

Convection involves the movement of fluids (liquids or gases) while conduction occurs through direct contact.

Front

What is an example of radiation in everyday life?

Back

The warmth felt from sunlight.

Front

What happens to the density of a substance when it is heated?

Back

It generally decreases, causing it to rise.