ROCKS- EarthSci

Question 1

What are Rocks?

Answer 1

Rocks are a combination of minerals that are bonded together in some way.

Question 2

What are rocks made out of?

Answer 2

Minerals.

Question 2

Composition rocks are generally classified as either ___ or ___.

Answer 2

Monomineralic and Polymineralic

Question 3

What does Monomineralic and Polymineralic mean?

Answer 3

Monomineralic- One mineral.
Polymineralic- More than one mineral.

Question 3

What are the three types of Rocks?

Answer 3

Igneous, Sedimentary, Metamorphic

Question 4

Where do Sedimentary Rocks come from/ How are they formed?

Answer 4

From sediments (pieces of rocks) that are cemented together.

Question 5

Where do Igneous rocks come from/ How are they formed?

Answer 5

From molten rocks/ magma that cools and hardens.

Question 6

Where do Metamorphic rocks come from/ How are they formed?

Answer 6

Formed when old rocks change by heat and pressure.

Question 7

What are the two classifications of Igneous Rocks?

Answer 7

Intrusive and Extrusive.

Question 8

What are the characteristics that fall under Intrusive Igneous Rocks?

Answer 8

-Formed by magma.
-Slow solidification/cooling.
-Large crystal size.

Question 9

Characteristics of a Pumice Rock.

Answer 9

-Igneous Rocks
-Formed by quick cooling lava.
-Very light, it could float on water.
-Glass type of rock.

Question 9

Characteristics of an Obsidian.

Answer 9

-Igneous Rocks.
-Formed by quick cooling lava.
-Is an actual glass.

Question 9

What are the characteristics that fall under Extrusive Igneous Rocks?

Answer 9

-Formed by lava.
-Quick solidification/cooling.
-Small to no crystals.

Question 9

Types of Igneous Rocks:

Answer 9

-Made up of Feldspar, Quartz, Mica.
-Granite- Most abundant igneous rock.

Question 10

What texture can Igneous Rocks classify as?

Answer 10

Coarse-grained Texture AND Fine-grained Texture.

Question 10

Difference between Coarse grained and Fine grained textures.

Answer 10

Coarse- Longer cooling, Larger Crystals.
Fine- Quick cooling, Smaller crystals

Question 11

What are volcanic rocks that contain holes formed by gas bubbles in lava. (Gas pockets.)

Answer 11

Vesicular texture/ Vesicular rocks

Question 12

It is the only type of rock that contain fossils.

Answer 12

Sedimentary Rocks

Question 13

This type of rock is usually formed in Water Environments

Answer 13

Sedimentary Rocks.

Question 14

They are Fragments cemented together and include the sediments: sand, silt, clay, pebbles, and boulders.

Answer 14

Clastic Rocks

Question 15

Light colored rocks, rich in elements like aluminium & silicon. Low density.

Answer 15

Felsic Igneous Rocks

Question 16

Dark colored rocks, rich in Iron and Mg. High density.

Answer 16

Mafic Igneous Rocks

Question 17

This is a type of rock that is formed by pre-existing rocks that have been changed through heat and/or pressure without melting.

Answer 17

Metamorphic Rocks

Question 18

Pre-existing rocks are also known as?

Answer 18

Parent Rocks

Question 19

The classification (2 Groups) of a metamorphic rock.

Answer 19

*Foliated- Mineral crystals are arranged in bands or layers
*Non-Foliated- Mineral crystals are not arranged in bands or layers.

Question 20

It is a high grade metamorphism/ Alternating layers of dark and light minerals.

Answer 20

Banding

Question 21

2 Types of Metamorphism:

Answer 21

*Regional Metamorphism- Caused by extreme pressure AND heat.
*Contact Metamorphism- Caused by contact with extreme heat.

Question 22

Rock Cycle:

Answer 22

*Melting and Solidification to be an Igneous rock.
*Weathering and erosion to be a Sedimentary rock.
*Heat and Pressure to be a Metamorphic rock.

Question 23

Generally, these rocks are formed from one mineral.

Answer 23

Chemical rocks (Crystalline)

Question 24

What are the factors that changes an igneous rock to a sedimentary rock?

Answer 24

Weathering, Erosion, Deposition, etc…