E.10 Fossils

Question 1

What does Trace Fossil mean?

Answer 1

Means that the imprint of an organism left behind

Question 2

Meaning of Cast Fossil

Answer 2

Rock that filled an imprint left behind an organism

Question 3

What does Petrified wood mean?

Answer 3

Minerals slowly replace parts of the wood

Question 4

How are Fossils formed?

Answer 4

A plant or animal dies and is buried by deposition sediments and formed a fossil as sedimentary rock forms.

Question 5

Can anything be turned into a fossil?

Answer 5

No, sediments must quickly bury the organisms before scavengers and decomposers break it down.

Question 6

What can strata tell us about what the earth used to look like?

Answer 6

Environment - types of rock are formed in different environments ex) Limestone is formed under the ocean

Timeline- Thicker strata layers shows the environment stayed the same for awhile

Events/change - new layers of strata tell us that something changed in the environment