Sedimentary Rocks

What is the difference between compaction and cementation?

• Cementation is the pressing of layers of sediment into sedimentary rock; Compaction is the minerals in water sticking sediments together to form sedimentary rock.
• Compaction is the pressing of layers of sedimentary rock; Cementation is the pressing of layers together deep in the earth with heat to form sedimentary rock.
• Compaction is sediments melting together to form sedimentary rock; cementation is the minerals in water sticking sediments together to form sedimentary rock.
• Compaction is the pressing of layers into sedimentary rock; Cementation is the minerals in water sticking sediments together to form sedimentary rock.

What causes the pressure necessary to form sedimentary rocks?

• Chemicals in the rock
• Temperatures inside the earth
• Weight from rocks above
• Water flowing over rock

A student wants to model the formation of sedimentary rock.  What will the student need?

• Sediments and pressure
• Sediments floating in water
• Sediments heated in water
• Sediments dissolved by the sun

The layers of sedimentary rock were found in this order beneath the ground.  Which layer formed first?

• Layer A
• Layer B
• Layer C
• Layer A, B, and C were formed at the same time.

The breaking down of rock on the surface of the Earth, usually by the force of water, wind or ice.

• Weathering
• Erosion
• Deposition
• Landform

A large, flat area of land at the mouth of a river formed by the deposition of sediments.

• Canyon
• Erosion
• Landslide
• Delta

The process by which materials that have been eroded are dropped in a new place.

• Weathering
• Erosion
• Deposition
• All of the above

The movement of weathered particles by water, wind, or ice.

• Weathering
• Erosion
• Deposition
• All of the above

Which of the following is associated with the formation of sedimentary rock?

• Heat and pressure
• Compaction and Cementation
• Chemical change and Heat
• Melting and Pressure

The act, process, or result of cementing.

• cementation

• gluing

• delta

• U-shaped valley