Igneous rocks are formed from

molten material, magma, and lava

How are metamorphic rocks formed?

heat and pressure change rocks beneath Earth's surface

What is one of the main results of uplift?

rocks beneath surface are exposed to weathering

Which is true about the rock cycle?

each rock type can change into any other rock type

How can sedimentary rock change through the rock cycle?

weathering and lithification can form new sedimentary rock

Which best describes the arrangement of atoms in a mineral?

arranged in regular, repeating patterns

What property to all minerals share?

all formed by natural processes

Which mineral property is determined by chemical composition?

all properties are determined by chemical composition

Can a mineral be classified by only physical characteristics?

No, they can be similar physically but different chemically.

When does a vesicular texture form?

gas comes out of lava or magma and forms bubbles

Igneous rock classification is based on

mineral assemblage and crystal size

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minerals, rocks, weathering and erosion review

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section review for earth science

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Questions 21

Answers

1
Igneous rocks are formed from
lava
molten material, magma, and lava
magma
molten material
2
Which process is most necessary to form sedimentary rocks?
deposition
metamorphism
subduction
cooling
3
Which process breaks down bedrock into sediments found in soil?
weathering
transport
deposition
erosion
4
Which term could describe how a mineral breaks along its crystal planes?
isometric form
high solubility
adamantine luster
perfect cleavage
5
How are metamorphic rocks formed?
pressure causes sediment to stick together
heat and pressure change rocks beneath Earth's surface
minerals in water crystallize
melted rock cools at or beneath Earth's surface
6
What is one of the main results of uplift?
rocks at surface are buried deep underground
rocks at surface are heated by nearby magma
rocks beneath surface melt and form crystals
rocks beneath surface are exposed to weathering
7
Which is true about the rock cycle?
rock cycle can change texture but not composition of rocks
high temperatures are necessary at each stage
each rock type can change into any other rock type
all stages occur beneath Earth's surface
8
What texture do metamorphic rocks composed of mineral grains that are aligned in bands have?
hornfels texture
nonfoliated texture
equigranular texture
foliated texture
9
How can sedimentary rock change through the rock cycle?
it can be exposed to wind and water to form igneous rock
it can cool at surface to form metamorphic rock
it can undergo uplift to form metamorphic rock
weathering and lithification can form new sedimentary rock
10
Which characteristic is not used to identify minerals?
crystal size
hardness
fracture
luster
11
Which best describes the arrangement of atoms in a mineral?
arranged from most dense to least dense
random
arranged in regular, repeating patterns
weakly bonded
12
What property to all minerals share?
all contain silicon-oxygen compounds
all formed by natural processes
all contain metallic elements
all exist as perfectly formed crystals
13
Which mineral property is determined by chemical composition?
all properties are determined by chemical composition
crystal form
hardness
color
14
Which shows 3 minerals arranged in increasing hardness according to Mohs scale of hardness?
diamond, quartz,talc
quartz,talc,diamond
talc,quartz,diamond
quartz,diamond,talc
15
What is metamorphism that occurs over large regions of Earth's crust called?
dynamic metamorphism
regional metamorphism
shock metamorphism
contact metamorphism
16
How are sedimentary rocks classified?
clastic, organic, and chemical
clastic
organic
chemical
17
Can a mineral be classified by only physical characteristics?
Yes.
No, you have to know where it formed.
No-minerals are the same physically & only differ chemically
No, they can be similar physically but different chemically.
18
When does a vesicular texture form?
gas comes out of lava or magma and forms bubbles
crystals form underground & finish growing after lava erupts
crystals settle in layers at bottom of magma chamber
lava solidifies quickly so crystals don't form
19
What is molten material undergound called?
magma
volcanic glass
igneous rock
lava
20
Igneous rock classification is based on
atomic structure and mineral structure
atomic structure and hardness
fracture and organization of mineral grains
mineral assemblage and crystal size
21
What most affects the crystallization of igneous rock?
speed of wind
rate of cooling
amount of pressure
color of rock

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