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Rocks, Minerals, Weathering and Erosion Flashcards | StudBud
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Rocks, Minerals, Weathering and Erosion
Rocks, Minerals, Weathering and Erosion
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A review of rocks and minerals for 8th Grade Earth Science #rocks #minerals
Flashcards
41 cards
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Questions
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Answers
1
A layer of soil is known as a
horizon
humus
desertification
profile
2
Igneous rocks that forms inside of the earth.....
Sedimentary rock
Extrusive igneous rock
Metamorphic rock
Intrusive igneous rock
3
Molten rock that is INSIDE the Earth is called....
lava
magma
4
Where do extrusive rocks form?
in the Earth's surface
on the Earth's surface
5
True or False: The Moh's scale is based on the fact a harder mineral will scratch a softer one
False
True
6
Decaying organic matter in soil is called...
deposition
humus
erosion
acid
7
Which of the following is NOT a qualification of a mineral?
must be a solid, liquid or gas
definite chemical composition
naturally occuring
crystal structure
8
What is the bottom layer of soil called?
parent material
topsoil
bedrock
subsoil
9
The type of rock that forms when pieces of sediments get pressed and cemented together..
igneous
sedimentary
metamorphic
10
The set of natural processes that form, change, break down, and re-form rocks...
rock series
rock cyclical
ID tests
rock cycle
11
Which of the following is mechanical weathering?
carbonic acid
frost wedging
rusting
acid rain
12
Limestone is classified as what type of rock?
igneous
metamorphic
sedimentary
13
The color of the powder left behind when the mineral is scraped across a surface...
luster
streak
fracture
color
14
Sediments being placed down in a new location...
deposition
weathering
compaction
erosion
15
Mechanical or Chemical: Water freezes in the cracks of rocks and breaks them apart
Chemical
Mechanical
16
The process of natural forces breaking down rocks....
weathering
soil formation
erosion
deposition
17
A naturally formed solid that is usually made up of one or more minerals....
rock
erosion
mineral
weathering
18
The type of rock that forms when molten rock cools and becomes a solid...
sedimentary
metamorphic
igneous
19
Overgrazing of animals can lead to soil loss and then.....
humus
weathering
desertification
mining
20
The tendency of a mineral to break along flat surfaces....
cleavage
fracture
hardness
streak
21
What are the agents of erosion?
all of the above
ice
water
wind
22
Mechanical or Chemical: Oxidation produces rust on rocks with iron
Chemical
Mechanical
23
True or False: Minerals can form when a solution evaporates
True
False
24
Pumice is an example of.....
metamorphic rock
sedimentary rock
igneous rock
25
If Talc is rated at a 1 on the Moh's scale, does that mean it's soft or hard?
soft
hard
26
The process of planting trees to help block wind from eroding soil....
terracing
crop rotation
windbreaks
contour plowing
27
This type of rock forms from heat and pressure...
sedimentary
metamorphic
igneous
28
The tendency of a mineral to break into irregular pieces....
fracture
luster
hardness
cleavage
29
Which of these is an igneous rock?
sandstone
coal
obsidian
slate
30
Mechanical or Chemical: Rock particles wear away rocks
Chemical
Mechanical
31
A mineral must have what kind of structure?
star
circular
crystal
rectangular
32
The scale that measures a mineral's hardness....
MOPS scale of hardness
streak plate
luster test
Moh's Scale of hardness
33
Which of these is an example of metamorphic rock?
limestone
obsidian
slate
sandstone
34
Mechanical or Chemical Weathering: Plants root into cracks of rocks and break it apart
Mechanical
Chemical
35
Mechanical or Chemical: Lichen produced a weak acid that wears away rock
Chemical
Mechanical
36
Soil is made up of air, water, organic material and....
pebbles
moss
grass
weathered particles
37
The way light reflects from the surface of a mineral....
fracture
cleavage
shine
luster
38
Which of the following is the least reliable clue to a mineral's identity?
density
hardness
luster
color
39
Gemstones are used in....
automobile parts
paper products
building materials
jewelry making
40
The three types of rocks are classified by....
how they look
where they are located
how they feel
how they form
41
The process of not plowing your field as often to avoid soil loss...
conservation tillage
crop rotation
contour plowing
terracing
