Geologist Unit 3 Purple

What do geologist study?

• plants

• animals

• rocks

What does a rock look like?

Why do geologists look at the layers of rocks?

• They look to see the age.

• The look at layers to see animals.

• they do not look at the layers.

The top layers of rock are ​ (a)   than the bottom layers.

• younger
• older
• the same age 

What is a fossil?

• marks left by animals in rock.

• marks left by plants and animals in rocks

• the way the age of the rocks is seen

Follsils are ​ (a)  

• old.
• young.