Reflection of Trees on a Lake

Front

What happens to light when it travels from water into air?

Back

The light changes direction.

Front

What is the reason trees appear on the surface of a lake?

Back

Light reflects off the trees and reflects off the water.

Front

What is reflection?

Back

Reflection is when light bounces off a surface.

Front

What is refraction?

Back

Refraction is when light bends as it passes from one medium to another.

Front

What is evaporation?

Back

Evaporation is the process of turning liquid into vapor.

Front

How can you separate salt from water?

Back

By allowing the water to boil and evaporate, leaving the salt behind.

Front

What is a circuit?

Back

A circuit is a closed path through which electric current flows.

Front

What happens if you remove a wire from a circuit?

Back

It can break the circuit and stop the flow of electricity.

Front

What is the role of a switch in a circuit?

Back

A switch controls the flow of electricity by opening or closing the circuit.

Front

What is light?

Back

Light is a form of energy that travels in waves.