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Rocks and Minerals 1stA&B Flashcards | StudBud
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Rocks and Minerals 1stA&B
Rocks and Minerals 1stA&B
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Flashcards
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Questions
20
Answers
1
Why is the crust the most important layer for humans?
It provides many resources to humans.
It is responsible of earthquakes and volcanic activity.
It provides knowledge of the structure of the Earth.
2
What is the name of the layer that is neither liquid nor solid?
Crust
Mantle
Inner Core
Outer Core
3
... refers to the extraction of rocks and stones from the surface of the Earth.
Quarrying
Open-cast
4
A ... is usually found in a deep-mining area.
water heap
garbage waste
waste heap
5
Rock Cycle: Why is it called a cycle?
Because it can start anywhere.
Because it has a beginning and an ending.
Because the change suffered is repeated over and over again.
6
Sedimentary rocks are small particles of rock broken off rocks which outcrop on the surface by:
erosion and earthquakes
weathering and erosion
earthquakes
weather
7
Some examples of igneous rocks are...
sandstone
granite
clay
basalt
8
Deep mining is characterized by sink ... shafts and then make a ... tunnel.
horizontal - horizontal
horizontal - vertical
vertical - horizontal
vertical- vertical
9
The
first step
of quarrying and opencast is to...
Use diggers to remove the loose rock/mineral.
Clear the vegetation and remove the soil.
Load the rock/mineral onto trucks and take it away.
Break up and loosen the rock layer by using explosives.
10
What are examples of sedimentary rocks?
sandstone and clay
clay and basalt
sandstone and limestone
granite and sandstone
11
The
final step
of quarrying and opencast is to...
Clear the vegetation and remove the soil.
Break up and loosen the rock layer by using explosives.
Load the rock/mineral onto trucks and take it away.
Use diggers to remove the loose rock/mineral.
12
The crust is only ... km thick under the oceans and up to ... km thick below mountain ranges.
50 - 100
5 - 10
5 - 100
13
Structure of the Earth: What is the name of the outer layer?
Crust
Core
Mantle
14
The rocks that make up the Earth´s crust are divided into three groups:
metamorph, sediments, igneous
sedimentary, igneous, metamorphic
ingenious, metamorphic, sedimentary
15
Igneous rocks: when magma cools down above the surface, ... rocks are formed.
intensive
extensive
intrusive
extrusive
16
Which method leaves a large hole (open pit) in the ground?
Quarrying
Open-cast
Both methods
17
Metamorphic rocks are rocks that have been changed by ... and ...
heat - pression
movements - pressure
movements - heat
heat - pressure
18
Most of these particles eventually reach the sea bed, where they settle and accumulate in ...
holes
layers
capes
plates
19
Igneous rocks: When magma cools down below the surface, ... rocks are formed.
extensive
intrusive
extrusive
intensive
20
Rock Cycle: Igneous rocks will eventually erode and break down into ...... rocks.
igneous
igneousic
metamorphosis
sedimentary
