Igneous & Sedimentary Rocks

What are the building blocks of igneous rocks?

• Water

• Minerals

• Sand

• Soil

The wearing away of soil or rock by weathering is known as ____.

• Silicate

• Erosion

• Intrusion

• Extrusion

Tags

NGSS.MS-ESS2-2

The basic structure of silicate consists of silicon and ____.

• Oxygen

• Carbon

• Hydrogen

• Nitrogen

Tags

NGSS.MS-PS1-1

Which minerals is commonly found in light-colored igneous rocks?

• Quartz

• Potassium feldspar

• Muscovite mica

• Pyroxenes

Which minerals is commonly found in dark-colored igneous rocks?

• Quartz

• Biotite mica

• Olivines

• Pyroxenes

Obsidian is a type of ______ igneous rock.

• Glassy

• Frothy

• Crystalline

• Coarse-grained

______ is the major rock found in the oceanic crust.

• Basalt

• Granite

• Diorite

• Andesite

What is the main characteristic of pumice that allows it to float?

• A) High density

• B) Low density

• C) High mineral content

• D) Low mineral content

Hot, molten rock inside the earth is called ...

• lava

• magma

• igneous rock

• minerals

Extrusive igneous rocks formed___

• outside the earth's surface

• when metamorphic rocks became magma

• magma stayed inside the earth

• sediments got cemented together