Unit 5 topic 8 Flashcards
1
Q
what is the meaning of petrified
A
dead organic matter turned into rock like material
2
Q
what is carbonaceous film
A
organic material found in sedimentary rock from a long time ago
3
Q
what are trace fossils
A
A type of fossil in which evidence if animal activity has been preserved.
4
Q
what is a mould
A
A fossil in which the hard parts of the organism has dissolved
5
Q
what is a cast
A
A type of fossil in which sediments or minerals have filed mould and hardened in to a rock
6
Q
what types of clues can fossils provide about earth’s history
A
when life began, when plants and animals first lived on land
7
Q
what condition are necessary for fossils to form
A
rain that creates mud
8
Q
name three types of fossils
A
- insect perserved in amber
- petrified wood
- compression fossil,
