Quiz Science Grade 4 Topic 1

What is a skeleton made of?

• Muscles

• Bones

• Skin

• Blood

Which of the following is NOT a function of the skeleton?

• Protect organs

• Give the body shape

• Pump blood

• Allow movement

Which organ does the skull protect?

• Heart

• Brain

• Lungs

• Stomach

The rib cage mainly protects the:

• Brain and spine

• Heart and lungs

• Liver and kidneys

• Stomach and intestines

Why are bones hard and strong?

• So they can store food

• So they can protect and support the body

• To make the body heavy

• To help the body float

When one muscle contracts, the other:

• Contracts too

• Relaxes

• Turns into fat

• Breaks down

What happens to a muscle when it contracts?

• Gets longer and thinner

• Gets shorter and fatter

• Breaks in half

• Disappears

Which of the following is a vertebrate?

• Earthworm

• Jellyfish

• Crocodile

• Spider

Animals without a backbone are called:

• Vertebrates

• Invertebrates

• Mammals

• Birds

The hard outer covering found on some invertebrates is called:

• Backbone

• Exoskeleton

• Endoskeleton

• Shell-bone