Fill in the blank with an appropriate word:
The capacity to do work is .

Choose the correct word from the bracket and fill in the blank.

_____ (Solar/ Wind) energy is used to operate flour mills.

Choose the correct answer from the box and fill in the blank.

We use _____ to generate electricity.

_____ energy is stored in photo-sensitive cells.

In the boxes, write F for things that get energy from food; E for things that get energy from electricity; and L for things that get energy from the fuel.

1. 2. 3.

4.  5.  6.