A fossil record does not give any information about how organisms changed over time.

• true

• false

Early fish used to have jaws.

• true

• false

What evidence do scientists use to organize the fossil record?

• the age of the rock layers

• index fossils

• the age of rock layers and index fossils

The kinds of organisms that could not live in the changed environment .......

• became extinct

• adapt to survive

• grow bigger

Which word is used to describe the direction of an object?

• motion

• north

• speed

The plane does not change how fast it moves, so it moves in a ....

• variable speed

• constant speed

• changeable speed

What is the pattern of motion in this picture?

• forward-and-backward

• rolling

• up & down

When sound speakers vibrate, we can see these vibrations.

• true

• false

if a strong wind blows, the wind chime will:

• swing slowly

• swing quickly

• stop swinging

Reptiles and amphibians first appear in......

• Palaeozoic

• Mesozoic

• Cenozoic