Science Unit 4

What do you call a process that breaks down metals?

• fossil

• extinct

• rusting

What do you call the breaking down of rock into smaller pieces?

• extinct

• weathering

• rust

What is a nonliving material made of one or more minerals?

• rock

• fossil

• weathering

What is it called when there are no more of an organism's kind left on Earth?

• fossil

• extinct

• weathering

What are the traces or remains of something that lived long ago?

• rock

• rust

• fossil

Ice covered much of the Earth during the ___.

• Icy Days

• Ice Age

• Ice Months

What can scientists learn by studying animals' teeth?

• They can learn how tall they were.

• They can learn what they might have eaten.

• They can learn how fast they ran.

What can scientists learn by studying their bones?

• They can learn what they ate.

• They can learn how they moved.

• They can learn how they smelled.

Why did the St. Helena Olive tree become extinct?

• They were all cut down.

• They were destroyed by disease and dry weather.

• They were destroyed by wild fires.

Which kind of rocks would fossils most likely be found in?

• igneous rocks

• sedimentary rocks

• metamorphic rocks