Light and electricity

light makes everything...........

• visible

• invisible

Electricity is a form of energy.

• false

• true

..........is the main source of light.

• 
• 
• 

To conserve electricity we have to use fans instead of air conditioner.

• True

• False

Candles are.........sources of light.

• Natural

• Artificial

stars are.........sources of light.

• Natural

• Artificial

light travels in............lines.

• curved

• straight

You have to turn on lights on leaving.

• true

• false

Sun is a..........source of light.

• natural

• artificial

Using energy saving bulbs don`t save electricity.

• True

• False