Sedimentary Rocks and Earth Science Quiz

What are sedimentary rocks made of?

• Layers of ice

• Particles of sand or mud

• Magma

• Volcanic ash

Which layer is the oldest in the rock layers described?

• Layer 1

• Layer 2

• Layer 4

• Layer 3

What happens to rock layers when tectonic plates push together?

• They dissolve

• They become igneous

• They fold

• They disappear

What can cause an earthquake according to the text?

• Movement of the plates

• Wind erosion

• Heavy rain

• Volcanic eruptions

What is the youngest rock layer in the picture?

• Layer A

• Layer B

• Layer C

• Layer D

What can fossils in rock layers help us determine?

• The color of the rocks

• The temperature of the rocks

• The age of the rocks

• The size of the rocks

What type of rock is formed when magma escapes as lava?

• Metamorphic rock

• Fossil rock

• Igneous rock

• Sedimentary rock

Why might the oldest rocks not be at the bottom?

• They have been pushed up by plate movement

• They dissolve faster

• They are lighter

• They are made of different materials

What is the process of particles settling out of water called?

• Metamorphosis

• Compaction

• Sedimentation

• Erosion

Sedimentary rocks are made from tiny pieces of other rocks, plants, and animals. Wind and water break big rocks into small pieces called sediments.

These sediments pile up in layers:

• A: Bottom layer (oldest)

• B: Next layer

• C: Next layer

• D: Top layer (youngest)

Over time, the layers get pressed together and turn into rock.

The last layer to form is D. It's the top layer, and it was added most recently.

Which layer was made last according to the text?

• Layer A

• Layer B

• Layer C

• Layer D