Heat and temperature

Front

What is thermal energy?

Back

Thermal energy is the total kinetic and potential energy of the particles in a substance.

Front

How does a thermometer work?

Back

A thermometer works by using the principle that liquids expand when heated and contract when cooled.

Front

What is an example of heat transfer through conduction?

Back

An example of heat transfer through conduction is a metal spoon getting hot from a hot soup.

Front

What happens to temperature when molecules move slower?

Back

When molecules move slower, the temperature is lower.

Front

What is an insulator?

Back

An insulator is a material that doesn’t allow heat to pass through it easily.

Front

What is the difference between heat and temperature?

Back

Heat is the energy transferred between objects due to a temperature difference, while temperature is a measure of the average kinetic energy of the particles in a substance.

Front

What is conduction?

Back

Conduction is the transfer of heat through direct contact between materials.

Front

What is convection?

Back

Convection is the transfer of heat through the movement of fluids (liquids or gases) caused by differences in temperature.

Front

What is radiation?

Back

Radiation is the transfer of heat in the form of electromagnetic waves, such as sunlight.

Front

What happens to the volume of most substances when heated?

Back

Most substances expand when heated, increasing their volume.