3.4 looking at fossils

Question 1

the remains or physical evidence of an organism preserved by the geologic process

Answer 1

fossils

Question 2

the process in which minerals replace an organism’s tissues

Answer 2

Petrification

Question 3

the process in which the pore space in an organism’s hard tissue

Answer 3

Permineralization

Question 4

a fossilized mark that is formed in soft sediment by the movement of an animal

Answer 4

trace fossil

Question 5

a mark or cavity made in a sedimentary surface by a shell or other body

Answer 5

mold

Question 6

a type of fossil that forms when sediments fill in the cavity left by a decomposed organism

Answer 6

cast

Question 7

a fossil that is found in the rock layers of only one geologic age and that is used to establish the age of the rock layers

Answer 7

Index fossil

Question 8

a marine mollusk and is an index fossil

Answer 8

Tropites

Question 9

another example of an index fossil

Answer 9

Phacops

Question 10

sticky tar

Answer 10

asphalt

Question 11

animal dung

Answer 11

coprolite