Geography

Justine Allison

14 February, 02:45

1. How do clastic sedimentary rocks form?

a Solid chemicals in water harden and form rocks.

b Fragments of rock are squeezed and cemented together.

c Plant and animal remains are squeezed and cemented together.

d Lava cools and hardens into rock.

2. Which option gives two examples of clastic sedimentary rock?

a coquina and shale

b shale and sandstone

c limestone and sandstone

d coquina and limestone

3. A geologist finds a section of rock that shows ripple marks.

What does the presence of ripple marks say about the area where the rock formed?

a The rock formed under Earth's surface at very high temperatures.

b The rock formed from mollusk shells.

c The rock was blown out of a volcano.

d The rock formed in a fast-moving stream.