Earth Science: Test 2

Which of the following is NOT a characteristic of a mineral?

• Naturally occurring

• Definite chemical composition

• Crystal Structure

• Organic

Tags

NGSS.MS-PS1-1

The most common minerals on Earth are...

• Silicates

• Metals

• Alloys

• Carbonates

Describe the luster of the mineral pictured

• Metallic

• Dull

• Glassy

• Waxy

What is the mineral name for table salt?

• Gypsym

• Calcite

• Halite

• Dolomite

________ refers to a mineral's intensity and quality of reflected light.

• Luster

• Streak

• Cleavage

• Crystal form

Which igneous rock is glassy and felsic?

• Basaltic glass

• Scoria

• Granite

• Obsidian

What is a texture for an Intrusive Igneous Rock?

• Vesicular

• Very Coarse

• Glassy

• Fine

How is crystal size related to the rate a molten material cools

• the faster it cools the smaller the crystal
• the faster it cools the larger the crystal
• the slower it cools  the smaller the crystal
• the crystal size is not affected by the cooling rate of the molten material

Tags

NGSS.MS-PS3-4

Porphyritic rocks have:

• small crystals, fast cooling

• no crystals, instant cooling

• large crystals, slow cooling

• both large and small crystals, slow cooling with different minerals

An igneous rock is one that

• has crystallised at the Earth's surface

• has crystallised well below the Earth's surface

• is made of solidified molten rocks

• all of the above