Science

Question 1

Igneous Rock

Answer 1

Rock formed directly from the crystallization of cooled magma.

Question 1

Rock

Answer 1

A group of minerals bound together in some manner.

Question 2

What type of rock is considered to be the parent rock

Answer 2

Igneous rocks are
considered to be the parent rocks.

Question 3

Intrusive

Answer 3

Molten rock that cools beneath Earth’s surface. (Magma)

Question 4

Extrusive

Answer 4

Molten rock that cools outside the Earth’s surface. (Lava)

Question 5

Felsic

Answer 5

Magma rich in SiO2. (> 60%) is light color and composed of lighter elements

Question 6

mafic

Answer 6

Magma low in SiO2. (<50%) is dark in color and composed of heavier elements (Fe, Mg).

Question 7

Example of felsic rock

Answer 7

granite

Question 8

Example of mafic rock

Answer 8

Basalt

Question 9

what Allows us to predict the way that igneous rocks form from cooling magma.

Answer 9

Bowen’s Reaction Series

Question 10

what minerals undergo a continuous change in composition

Answer 10

felsic/ silica rich

Question 11

what minerals undergo a discontinuous change in composition.

Answer 11

mafic/ iron rich

Question 12

what are Visible features of igneous rocks

Answer 12

crystals (intrusive) and/or pores (extrusive).

Question 13

Sedimentary Rock

Answer 13

Rock formed from cemented layers of sediment.

Question 14

what is the sedimentary rock process known as

Answer 14

lithification.

Question 15

5 steps of sedementary rocks formation

Answer 15

weathering, erosion, deposition, compaction, and cementation.

Question 16

There are three types of sedimentary rock:

Answer 16

clastic, chemical, and organic

Question 17

examples of clastic sedimentary rock, and there grain size.

Answer 17

conglomerate (fast moving water/course), sandstone (slow moving water/medium), shale (still water/fine)

Question 18

two examples of chemical rocks

Answer 18

NaCl (salt)
CaCO3 (calcite)

Question 19

two examples of organic rock

Answer 19

Ex: Coal, limestone

Question 20

Visible features of sedimentary rocks:

Answer 20

earthy or grainy texture and/or the presence of fossils.

Question 21

Metamorphic Rock

Answer 21

Rock formed when high pressure and temperature combine to alter the texture or chemical composition of other rocks.

Question 22

What causes metamorphism

Answer 22

• Heat
• Pressure
• Interactions with hot water and/or other chemical elements.

Question 23

There are three types of metamorphism:

Answer 23

Regional, contact, and hydrothermal

Question 24

reginal

Answer 24

When high temperatures and pressures affect large regions of Earth’s crust.

Question 25

what is the most common type of metamorphism

Answer 25

regional

Question 26

Contact

Answer 26

When molten rock comes into contact with solid rock.

Question 27

Hydrothermal

Answer 27

When very hot water reacts with rock and alters its chemistry.

Question 28

Examples:

Answer 28

Shale → Slate Granite → Gneiss Limestone → Marble Sandstone → Quartzite

Question 29

Visible features of metamorphic rocks:

Answer 29

include foliation (layering) and/or flattened crystals.