Extra Rock Things

Question 1

How are igneous rocks formed?

Answer 1

• When magma/lava cools

Question 2

What is magma?

Answer 2

Melted rock that stays underground

Question 3

What is lava?

Answer 3

Melted rock that reaches the surface

Question 4

What is texture when talking about rocks?

Answer 4

The size of the crystals

Question 5

What are the charcteristics of extrusive rocks?

Answer 5

• They coold from lava
• They have small crystals

Question 6

What are teh charcteristics of intrusive rocks?

Answer 6

1. Cool from magma
2. Produces big crystals

Question 7

What is composition when talking about ig rocks?

Answer 7

The type of minerals that make up ig rocks

Question 8

Describe mafic rocks

Answer 8

1. Dark colored minerals (Fe)
2. Dense, heavy minerals
3. ~2,200-1,650 F

Question 9

Desribe felsic rocks

Answer 9

1. Light colored minerals
2. Light, less dense minerals
3. ~1,450-800 F

Question 10

How are sedimentary rocks formed?

Answer 10

1. Weathering-erosion-deosited in low place (ocean)-buried 2-5 miles deep-compaction-cemented by minerals percipitating-sed. rock
2. Same as #1 expect sediments are organic

Question 11

What are clastic sedimentary rocks?

Answer 11

Sediments are amde out fo rock frgements, pebbles, sand, clay
prossess #1

Question 12

What are organic sedimentary rocks made out of?

Answer 12

rock is made out of organic matter (fossiles, shellls, wood.)
prossess #2

Question 13

What are metamorphic rocks?

Answer 13

When ig rock undergoes tremendous heat & pressure to change mineral pattern, size of crysltes, or form new minerals

Question 14

What is texture when talking about metamorphic rocks?

Answer 14

How minerals are arranged in the met. rock

Question 15

What is a foilated rock?

Answer 15

Minerals are agrraned into thin lines or thick bands

Question 16

What is a nonfoliated rock?

Answer 16

Minerals are not arranged into lines or bands, usually made of 1 mineral