2.3

Question 1

sandstone

Answer 1

grains of sand may be compact

Question 2

clastic sedimentary rock

Answer 2

grains of sand may be compacted and cemented rock or minerals fragments that cemented together

Question 3

clasts

Answer 3

mineral fragments

Question 4

chemical sedimentary

Answer 4

when minerals crystallize out of a solution to become rock

Question 5

organic sedimentary

Answer 5

sedimentary rock from the remains of once-living plants or animals

Question 6

fossils

Answer 6

remains of animals that once lived

Question 7

coral

Answer 7

skeletons of tiny organisims

Question 8

reefs

Answer 8

huge colonies of coral

Question 9

coal

Answer 9

organic sedimentary rock that forms from the action of heat and pressure on plant material over millions of years

Question 10

fossilifeous limestone

Answer 10

animal remains that become cemented together

Question 11

ripple marks

Answer 11

the motion of wind and water on lakes oceans rivers and sand dunes

Question 12

mud cracks

Answer 12

structures with fine grained sediment at the bottom of a shallow body of water that expose to the air and dry out

Question 13

strata

Answer 13

layers of rock

Question 14

stratification

Answer 14

process of which sedimentary rock are arranged in layers

Question 15

sediment

Answer 15

tiny pieces of fragments of rock