Class 4 Science End of Term 2 (2020-2021) Test

This picture shows an example of what type simple machine?

• pulley

• wedge

• lever

• wheel and axle

A seesaw is an example of what type of simple machine?

• wheel and axle

• lever

• wedge

• pulley

The ______________ is a flat surface that is raised so one end is higher than the other.

• inclined plane

• lever

• pulley

• wedge

Simple machines make work __________________.

• impossible to finish

• difficult

• easier

• hard

This is a diagram of a _________________.

• nose

• heart

• toe

• eye

Why does your heart beat faster when exercising?

• Because you get excited.

• Because the muscles need more oxygen to function.

• Because you breathe faster.

• So that you will not get tired.

Why does the heart pump blood to the lungs?

• To allow fresh air to cool the blood before going to the body.

• To allow the lungs to remove oxygen from the blood.

• To allow the lungs to put oxygen into the blood.

• This is the route designed for the blood to take.

How big is the heart?

• Size of a golfball

• Size of your fist

• Size of your eyeball

• Size of your head

Your heart always pumps at the same rate.

• True

• False

Your heart is present in your chest, between your lungs slightly to the

• Left

• Right