Unit 3 - Law of Conservation of Energy, Heat & Thermal energy

Front

What is the Law of Conservation of Energy?

Back

The Law of Conservation of Energy states that energy cannot be created or destroyed, only transformed from one form to another.

Front

What type of energy is associated with the movement of energy by electromagnetic waves?

Back

Radiant (light) energy.

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) due to differences in temperature.

Front

What is radiation?

Back

Radiation is the transfer of energy through electromagnetic waves without the need for a medium.

Front

What happens to thermal energy when you roast marshmallows over a fire?

Back

Thermal energy is transferred from the fire to the marshmallow through conduction.

Front

What is the Celsius scale used for?

Back

The Celsius scale is used to measure temperature, where 0 degrees is the freezing point of water and 100 degrees is the boiling point.

Front

What is an example of convection in everyday life?

Back

Boiling water moving in a circular motion is an example of convection.

Front

How does chocolate candy melt in your hand?

Back

Chocolate candy melts in your hand due to conduction, as heat from your hand is transferred to the chocolate.

Front

What is the difference between thermal energy and temperature?

Back

Thermal energy is the total energy of all particles in a substance, while temperature is a measure of the average kinetic energy of those particles.