grade 4 , con 5 , lesson 1

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

• kinetic energy

• stored light energy

• stored electrical energy

• potential 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 goes down.

• decreases as it reaches the top of the hill.

• is more than its speed when it goes down.

• increases as it reaches the top of the hill.

When a wheelchair and a car go up a ramp, which of them can store sorme energy?.............

• The wheelchair only.

• The car only.

• Both of them.

• None of them.

The roller coaster has the most energy of motion,................

• as it goes up to the top of the hill.

• as it goes down the hill.

• when it stops at the top of the hill.

• when it stops at the bottom of the hill.

When the roller coaster stops, its energy of motion............

• doesn't change.

• increases.

• decreases.

• becomes zero.

When a car moves up a ramp, this happens due to the effect of.............

• gravity force.

• balanced force.

• kinetic energy

• sound energy.

The type of energy that allows objects to move is known as.............

• light energy.

• potential energy.

• solar energy.

• kinetic energy.