Which characteristic of sound tells how loud it is?

Using energy carefully helps protect the environment.

What happens when light falls on a mirror?

Why should we use energy sources carefully?

The Sun is the main source of energy on Earth.

Match the device with its use.

What is the main source of energy for Earth?

Which characteristic of sound tells how high or low it is?

Which items are needed in a simple electric circuit?

Fuel stores energy for vehicles.

Match the term with its meaning.

Which unit is commonly used to measure temperature?

Which part of a circuit provides electrical energy?

Which property of light allows us to see objects clearly?

Electrical energy can be changed into light energy.

Magnetic energy can attract iron objects.

Light cannot travel in a straight line.

Which energy sources should be used responsibly?

Which object produces sound?

Sound can be produced without vibration.