FOSSILS

What is fossils?

• A fossil is when animals and plants die ,their bodies may fall into sediments.
• Sometimes they can become a part of sediment rock.
• The remains of the living organisms that have changed to rock are called fossils

WHAT HAPPENS TO THEM ?

• As the rock layers build up,the rocks becomes solid
• The minerals in the rock may replace the minerals in parts of the dead bodies.
• This takes place over millions of years

HOW FOSSILS ARE MADE?

• Fossils can be made when an animal leaves an imprint of its footprint or burrow in wet sand or mud .
• When more sediment is deposited on top of the imprint and the rock hardens,there may be a mark in the rock

CLUES OF FOSSILS

• Fossils can help us to work out how a rock formed
• Limestone contains fossils from sea animals and plants .
• Coal sometimes contains fossils of plants that look like ferns