untitled

What is energy?

• Energy is the ability to do work.

• Energy is a type of force.

• Energy is a part of an element.

• Energy is another name for neutrons.

In which of these is work said to have been done

• Pushing a wall

• Reading

• Pushing a box

• Standing

What will happen if there is too much friction?

• Nothing will stop moving

• Nothing will move

What happens when we throw a ball into the air ?

• It comes back in your hand automatically

• It stays in the air

• It first rises up then seems to stop and falls on to the ground

What is energy?

• Energy is the ability to do work.

• Energy is a type of force.

• Energy is a part of an element.

• Energy is another name for neutrons.

The force by which the earth pulls the object towards it is called ...............

• Gravitational force

• Frictional force.

• force

A force that tries to stop a moving object is known as?

• Gravitational force

• Force of friction

• Mechanical force

• Electrical force

_____ is said to be done when force moves an object.

• work

• energy

• motion

What is the main source of our energy?

• Planets

• Comets

• Moon

• Sun

Friction is when it pulls something to itself.

• True

• False