Chapter 8.3

Question 1

How is sedimentary rocks formed?

Answer 1

Sedimentary rocks are formed by the erosion and disposition of sediments that are cemented together.

Question 2

What is sedimentation?

Answer 2

Sedimentation is the process of something being deposited as a sediment.

Question 3

What is cementation?

Answer 3

Cement action is the process of binding substance together by cement.

Question 4

What is the three types of sedimentary rocks?

Answer 4

• Clastic
• Chemical
• Biogenic

Question 5

How does clastic sedimentary rocks form?

Answer 5

Clastic sedimentary rocks are forms from the weathering of rocks. They contain Brocken pieces of other rock.

Question 6

Characteristics of clastic sedimentary rocks

Answer 6

• layers
• may contain fossils
• no crystals

Question 7

How do chemical sedimentary rocks form?

Answer 7

Chemical sedimentary rocks form when minerals dissolved in water come out of solution and crystallise into a sold and sink to the bottom.

Question 8

Characteristics of chemical sedimentary rocks

Answer 8

• Crystals
• Soft
• No layers
• occasionally contain fossils

Question 9

How does biogenic sedimentary rocks form?

Answer 9

Biogenic sedimentary rocks are made from dead plants and animal matter. They can be layered depending on deposition.