Unit 4 Study Guide 23-24

Front

What is Conduction?

Back

Conduction is the transfer of heat through a solid material without the movement of the material itself. It occurs when two objects at different temperatures are in direct contact.

Front

What is Convection?

Back

Convection is the transfer of heat through fluids (liquids and gases) caused by the movement of the fluid itself. Warmer parts of the fluid rise while cooler parts sink.

Front

What is Radiation?

Back

Radiation is the transfer of heat in the form of electromagnetic waves. It does not require a medium, so it can occur in a vacuum.

Front

What does the Law of Conservation of Energy state?

Back

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

Front

Give an example of energy transformation: Electrical -> Mechanical -> Sound.

Back

A pencil sharpener plugged into a wall outlet transforms electrical energy into mechanical energy (the motor spins) and then into sound energy (the noise of sharpening).

Front

What is Photosynthesis?

Back

Photosynthesis is the process by which green plants convert light energy into chemical energy, specifically glucose, using sunlight, carbon dioxide, and water.

Front

What is the difference between Conduction and Convection?

Back

Conduction occurs in solids and involves direct contact, while convection occurs in fluids and involves the movement of the fluid.

Front

What is an example of Conduction?

Back

An example of conduction is when a metal spoon gets hot after being placed in a pot of boiling water.

Front

What is an example of Convection?

Back

An example of convection is the warm air rising from a heater, which then circulates throughout the room.

Front

What is an example of Radiation?

Back

An example of radiation is feeling warmth from the sun on your skin, even though the air around you may be cool.