Unit 6 (3) Sedimentary Rocks:

Multiple Choice

Sedimentary rocks cover approximately ___% of Earth's land surface.

• 73
• 67

• 76

• 37

Multiple Choice

Why are sedimentary rocks considered important for understanding Earth's history?

• Because they are the most abundant type of rock on Earth

• Because they preserve evidence of ancient climates, extinct organisms, and past environments

• Because they are formed from volcanic activity

• Because they are only found deep underground

Multiple Choice

What happens when new dirt and rock pieces are put on top of older layers?

• erosion
• compaction
• pressure
• weathering

Multiple Choice

The process of layers become stuck together forming sedimentary rocks

• weathering

• erosion

• cementation

• deposition

Reorder

Organize the steps of formation of sedimentary rocks from start to finish

• Weathering and Erosion

• Deposition

• Compaction

• Cementation

1

2

3

4

• 1
• 2
• 3
• 4

Multiple Choice

Which type of sediment is the largest?

• Sand

• Gravel

• Silt

• Clay

Multiple Choice

There are 3 main types of sedimentary rock. One type is called which is formed when minerals dissolve into a solution and then harden to form new sedimentary rocks!

• chemical rock
• organic rock
• clastic rock

Multiple Choice

​ ​ sedimentary rock is made from the remains of once living things.

• Organic
• Clastic
• Chemical

Multiple Choice

During coal formation, what is the precursor to coal that forms from partially decomposed plant material?

• Lignite

• Peat

• Bituminous

• Anthracite

Multiple Choice

Which sedimentary rock formation is characterized by dramatic vertical exposures formed by the erosion of uplifted, layered sedimentary rocks?

• Plateaus

• Deltas

• Cliffs & Canyons

• Buttes

Multiple Choice

Fossils are only found in sedimentary rocks.

• True

• False