1. By Daniel

2. The rainbow
 White light is a mixture of seven colours.

3. Bodies and light
 Transparent objects allow light to pass through.

4. Translucent
 Translucent objects allow some light to pass through,
but we cannot see objects behind them very clearly.

5. Opaque
 Opaque objects do not allow light to pass through.

6. Conductor
 Materials like iron and aluminium are conductors.
They get hot and cold quickly.

7. Insulator
 Materials like wood and plastic are insulators. They get
hot and cold slowly.