Grade 4 Exam

Toy cars need energy to do all the following functions , except...........

• moving forward and backward.

• Rotation in a circle.

• moving right and left.

• Rotation around the moon.

Among forms of fuel that present in car fuel stations are. . . . . . .

• gasoline and wood

• natural gas and coal.

• wood and coal.

• Gasoline and natural gas.

All of the following are examples of renewable energy resources, except......

• fossil fuel.

• waterfalls.

• Wind.

• sunlight.

you need gasoline to move a bicycle .

• True.

• False.

Most of energy chains start with the moon.

• True.

• False.

We cannot create anew form of energy, and also We cannot destroy an existed form of energy.

• False.

• True.

The input energy when using the hair dryer is the . . . . energy .

• electrical.

• potential.

• Kinetic

• Thermal

Water flows through turbines in dams to generate . . . . . energy.

• electrical.

• potential.

• Solar.

• light.

Fossil fuels need - - - - to be formed under the Earth's surface.

• five years.

• Ten years.

• hundreds of years.

• millions years.

The steps of forming fossil fuel, don't include . . . . . . . of the remains of the living organisms.

• Decaying.

• Cooling.

• Burying.

• Heating.