Bone or Fossil

Question 1

What is a bone?

Answer 1

Bones are any piece of the hard whitish tissue that makes up the skeleton in animals or humans

Question 2

What are the 3 types of fossils?

Answer 2

1. Chemical Fossils
2. Body Fossils
3. Trace Fossils

Question 3

What are chemical fossils?

Answer 3

*They contain carbon
*They are formed from living things
*Examples Petroleum, coal and natural gas

Question 4

what are the 3 types of Body Fossils

Answer 4

1. Mould and Cast Fossil
2. Replacement fossil
3. Whole body fossil

Question 5

How does a mould and cast fossil form?

Answer 5

1. Animal dies and leaves an imprint
2. Imprint fills with minerals from the sediment
3. It hardens to form a fossil
4. The fossil is called a cast fossil
5. The fossilised imprint is called the MOULD FOSSIL

Question 6

what is a replacement fossil

Answer 6

This occurs when the original shell or bone dissolves away and is replaced by a different mineral

Question 7

What is a whole body fossil?

Answer 7

An animal is totally covered in mud or sand.
The body is not exposed to oxygen

Question 8

What is a trace fossil

Answer 8

A fossil that records the activity of an animal

Question 9

What are the 3 types of trace fossils

Answer 9

1. Footprints
2. trackways
3. Coprolites (fossil faeces)

Question 10

What is the 5 steps of the fossilisation process

Answer 10

1. Animal dies and ends up in the sea covered by ONE layer of rock
2. Over time more layers of rocks cover it and
   A) its bones only remain
   B) SOMETIMES the bones will also decay if it is a cast and mould fossil.
   C) Sometimes the bones change to mineral matter (REPLACEMENT FOSSIL)
3. Over thousands of years the sea will change
4. Erosion and weathering will take place and the fossil will be exposed