Igneous rocks

What is a rock?

• a naturally occuring solid mixture of one or more minerals that may also include organic matter
• a man-made solid mixture that include inorganic matter
• a man-made solid mixture that include organic matter
• a naturally produced solid material mixed with soi

The three main classes of rock are -------------, sedimentary, and metamorphic.

• Igneous
• quartz
• magma
• extrusive

Igneous rocks form

• When lava or magma cools and solidifies

• when soil hardens and becomes solidified
• when natural solutions trapped in underground spaces become solid
• when minerals combine to form new solid substances

When magma pushes into surrounding rock below the earth's surface and cools, the rock that forms is called

• Granite
• Marble
• Intrusive
• Extrusive

Igneous rock that forms when lava erupts onto earth's surface is called

• Intrusive igneous roc
• Extrusive igneous rock
• Diorote
• granite

Igneous rocks can form on the earth's surface, or within the earth's crust. True or false?

• True
• False

Tags

NGSS.MS-ESS2-1

How are rocks classified? Check all that apply.

• By mineral composition
• By texture
• By intrusion
• By matamorphosis

The composition or makeup of rocks is determined by

• the minerals and organic matter it contains
• the texture of the rock
• how old the rock is
• the particles of other rocks it contains

Tags

NGSS.MS-ESS3-1

Fine-grained igneous rocks with small crystals formed from

• rapidly cooling lava

• slowly cooling magma

Tags

NGSS.MS-PS1-4

Coarse-grained igneous rocks with large crystals formed from

• rapidly cooling lava

• slow cooling magma

Tags

NGSS.MS-PS1-4