Without light, we ...................... see objects

Drivers use car lights to .......................roads.

The energy that allows us to see things is sound energy.

.................... is when there is no light.

Some objects give off their own ……………………………

The ………………… gives off its own light

We see objects that do not give light, when the light …………………… on them

A traffic signal uses .......................................... to help people organize traffic.

Look at the photo and answer: This object that you see is giving off light ?

This object gives it's own light?

This object gives off light?

This object doesn't give its own light, so how could we see it???

This object gives off its own light?