Question

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.

Answer 1

1. B

Clastic sedimentary rocks are formed by fragments of rock that are squeezed and cemented together.

2. B.

Shale and sandstone are both considered clastic sedimentary rocks.

3. D

The rock formed in a fast-moving stream.

Answer 2

1. B

Clastic sedimentary rocks are formed by fragments of rock that are squeezed and cemented together.

2. B.

Shale and sandstone are both considered clastic sedimentary rocks.

3. D

The rock formed in a fast-moving stream.

Step-by-step explanation: