8 Review Topic 4

Front

What are the energy transformations that occur when a light bulb heats up after it has been turned on?

Back

electrical → light → thermal

Front

What is the most common temperature scale used in the world where water freezes at 0 degrees and boils at 100 degrees?

Back

Celsius

Front

What is the transfer of energy by the movement of electromagnetic waves or subatomic particles called?

Back

radiation

Front

What are the energy transformations that occur when you make a campfire?

Back

chemical → thermal → light

Front

In heat transfer, from where does heat always flow?

Back

hotter to colder

Front

Define conduction.

Back

The transfer of heat through direct contact between materials.

Front

Define convection.

Back

The transfer of heat by the movement of fluids (liquids or gases).

Front

What is the definition of thermal energy?

Back

The total kinetic energy of particles in a substance.

Front

What is the principle of energy conservation?

Back

Energy cannot be created or destroyed, only transformed from one form to another.

Front

What is an example of chemical energy?

Back

Energy stored in food or fuel.