grade 4 , con 5 , lesson 1 &2

When a sand surfer moves down the hill, this means that he has............. due to his movement.

• kinetic energy

• stored electrical energy

• potential energy

• stored light energy

Human needs...........to walk from one place to another.

• light energy

• energy obtained from food

• sound energy

• energy obtained from batteries

Electric motor in the roller coaster helps it to...........

• move up to the top of the hill.

• move down to the bottom of the hill.

• stop at the top of the hill.

• stop at the bottom of the hill.

When an object moves down a ramp, its stored potential energy...............

• increases.

• doesn't change.

• changes to a less active form of energy.

• changes to a more active form of energy.

When the roller coaster goes up, its speed........

• decreases as it reaches the top of the hill.

• decreases as it goes down.

• is more than its speed when it goes down.

• increases as it reaches the top of the hill.

The form of energy that is stored in a book placed on a table is known as............ energy

• potential

• thermal

• light

• sound

The energy of an object due to its motion is known as.............. energy.

• sound

• thermal

• potential

• kinetic energy

The energy that is stored in an object due to its position , is known as .......

• electrical

• kinetic

• potential

• chemical

The form of energy that can be seen is........ energy.

• thermal

• electrical

• light

• sound

When you throw a stone in a lake, the..........is transferred from the stone to the water surface.

• potential energy

• pulling force

• gravity force

• kinetic energy