grade 4 , con 5, lesson 4

Chemical energy can be stored in............

• food only.

• battery only.

• television and food.

• food and battery.

Humans cannot live without ............ to obtain the needed energy for doing their activities

• reading books

• driving cars

• watching television

• eating food

When you jump high, the force affecting you must be............

• balanced.

• unbalanced.

• created.

• destroyed.

The force that is found between a moving car and the ground, which opposes its movement is known as..........

• pushing force.

• electrical energy.

• magnetic energy.

• friction force.

When an object begins to move down a hill, the potential energy stored in it changes into.........

• less active energy.

• more active energy.

• light energy.

• electrical energy.

Orange potato and the battery contain stored chemical energy

• True

• False

A car does work when it moves from one place to another

• True

• False

Burning of food inside our bodies produces energy that allow us to do our activities

• True

• False

Energy obtained from food is important for your body to move and do different activities

• True

• False

When you are jumping to a certain height the mass of your body doesn't affect your potential energy

• True

• False