Science Review for Primary Checkpoint

Light is not matter because ……

• It can travel

• It doesn’t have mass

• It can be reflected

• It is a form of energy

Answer explanation

Which body system(s) help your body to move?

• The muscular system

• The muscular system and the digestive system

• The skeletal system

• The muscular system and the skeletal system

Alan is pushing a box from the left to the right, the box is slowed down by a named force. What is the force?

• Gravity

• Upthrust/Buoyancy

• Friction

• Water resistance

What is the function of a skull?

• To protect the brain

• To protect the lungs

• To protect the heart

• To protect the kidneys

Why does astronauts float in space?

• Because they can fly

• Because space doesn’t have gravity

• Because they must fly to survive

• Because space doesn’t have friction