Quiz: Rocks on the Beach

What covers the beach in Washington state in this passage?

• • White sand

• • Large rocks

• • Seashells

• • Grass

What type of rock forms from sediment?

• • Igneous

• • Metamorphic

• • Sedimentary

• • Obsidian

What holds sediment together to form sedimentary rock?

• • Pressure only

• • Minerals in the water

• • Heat

• • None of the above

What is the process called when minerals act as “glue” to hold sediments together?

• • Compaction

• • Cementation

• • Metamorphosis

• • Crystallization

What causes the compaction of sediment layers?

• • Wind

• • Layers pressing down on each other

• • Earthquakes

• Freezing temperatures

Igneous rocks are formed from:

• • Sediment

• • Magma

• • Sand

• • Minerals only

Magma that cools while underground forms what type of rock?

• • Sedimentary

• • Igneous

• • Metamorphic

• • Sandstone

What do geologists study to understand how rocks were formed?

• • Size of the rocks

• • Shape and color of the rocks

• • Clues within the rocks

• • Smell of the rocks

Tags

NGSS.MS-ESS2-1

Sedimentary rock is primarily made of:

• • Magma

• • Cement

• • Compacted sediment

• • Metal

Tags

NGSS.MS-ESS2-1

When magma cools and hardens on Earth's surface, it forms:

• • Sedimentary rock

• • Sand

• • Igneous rock

• • Soil