1. It attracts the metal objects
2. Any object that gives us light.
3. It is an area of darkness formed by an opaque object.
4. It is a very convenient source of electric current.
5. This can be used to control drought and flood.

1. It attracts metal objects - Magnet
2. Any object that gives us light - Luminous object
3. It is an area of darkness formed by an opaque object - Shadow
4. It is a very convenient source of electric current - Dry cell
5. It can be used to control drought and flood - Dam