Classifying Rocks Reading

What are rocks formed from?

Tags

ESS.2.A

ESS.2.B

(a)   are scientist who study the history, processes, and materials of our planet that have led to its current structure.

Tags

NGSS.MS-ESS1-4

NGSS.MS-ESS2-3

NGSS.MS-ESS2-1

NGSS.MS-ESS2-2

The word "igneous comes from the Greek word for ____

• Ignition

• Ignite

• Fire

• Flames

Extrusive igneous rocks do not contain crystals, why is this?

Tags

NGSS.MS-PS1-4

Extrusive igneous rocks sometimes have a smooth, glassy (a)  

(a)   is one of the examples of extrusive rock given in the reading.

According to the reading, how long can it take for magma to cool to become an intrusive igneous rock?

• Hundreds of Years

• Thousands of Years

• Millions of Years

• Almost instantly

Because intrusive igneous rocks cool down so slowly there is time for crystals and other minerals to form. These types of rocks tend to have a (a)   texture.

What are the two minerals that can be seen in granite?

• Quartz

• Feldspar

• Obsidian

• Basalt

• Sand

(a)   rocks are formed from pieces of other rocks.