Rocks and Minerals Study Guide Fall 2022

In order for rocks to be classified as igneous, the rocks must

• solidify at the surface of Earth.

• be eroded and deposited in layers.

• be formed from magma.

• change form when pressure is applied.

Answer explanation

Igneous Rocks are either cooled rapidly (Extrustive Rocks) to form small grains,or slowly (Intrusive Rocks) to form large grains.

What is the name of the process in which igneous, sedimentary, and metamorphic rocks are converted into one another in stages?

• rock cycle

• erosion cycle

• magma cycle

• tectonic cycle

Answer explanation

Tags

NGSS.MS-ESS2-1

According to the rock cycle, when liquid magma cools into a solid, what is formed?

• lava

• glaciers

• igneous rock

• metamorphic rock

Answer explanation

Which characteristic property indicates that igneous rock cools slowly?

• mineral composition

• hardness

• density

• crystal size

Answer explanation

Because they cool slowly, which rocks have time to grow large, visible crystals?

• intrusive

• extrusive

• nonfoliated

• clastic

Answer explanation

Which of these can determine the size of grains in igneous rocks?    

• Size of the volcano

• Amount of rare minerals

• Distance from a plate boundary

• Cooling rate of molten rock

Answer explanation

Tags

NGSS.MS-PS1-4

The "magma" position in the rock cycle would be found--

• 4

• 2

• 3

• 1

Answer explanation

Tags

NGSS.MS-ESS2-1

Which type of rock forms when molten rock hardens either above or below the Earth's surface?

• metamorphic

• sedimentary

• igneous

• intrusive

Answer explanation

This rock would be classified as---

• clastic

• intrusive

• foliated

• extrusive

Answer explanation

This rock would be classified as --

• foliated

• extrusive

• intrusive

• clastic

Answer explanation