Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Piano Exam > Rocks > Flashcards

Rocks Flashcards

1
Q

What are the 8 ways of classifying minerals?

A

Colour, streak, lustre, hardness, crystal structure, cleavage, magnetism, and reaction with certain chemicals

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Why would and wouldn’t you use colour to identify a mineral?

A

Would because it’s easy to determine and wouldn’t because some minerals are the same colour but doesn’t mean it’s the same mineral

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is Mohs hardness scale?

A

A scale that includes minerals from softest to hardest and what could scratch it

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is magma?

A

Hot molten rock under Earth’s surface

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is igneous rock?

A

Rock that forms from the hardening of liquid magma

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is intrusive?

A

When magma is cooled underground

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is lava?

A

Magma that’s forced out onto Earth’s surface

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is extrusive?

A

When igneous rock is formed by lava cooling on Earth’s surface

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is sediment?

A

Rock particles that include clay, mud, sand, gravel, and boulders

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is sedimentary rock?

A

Rock that is formed by breaking down, depositing, compacting, and cementing of sediment

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is metamorphic rock?

A

Igneous or sedimentary rock that’s properties have changed because they were buried so deeply that the heat and pressure changed the properties

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

How are minerals different from rocks?

A

Minerals are usually found mixed together to form rocks

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Do bigger crystals cool quickly or slowly?

A

Slowly

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What are fossils?

A

Rock-like casts, impressions, or actual remains of organisms that were covered by sediment when they died before they decomposed

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

How are fossils formed?

A

By an organism falling into mud, quicksand, a landslide of sediment; or blowing volcanic ash. The organism then becomes sedimentary rock. Minerals in water eventually replace minerals in the organism and voila!

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is a fossil record?

A

The data we have from fossils

17
Q

What is the geological time scale?

A

A time scale using fossils to determine the changes of life on Earth

18
Q

Why are there very few fossils?

A

Because most dead organisms decay or are eaten by scavengers and soft tissues don’t fossilize well

19
Q

Why aren’t fossils found in metamorphic rock?

A

Because metamorphic rocks can’t survive the pressure of fossilizing

20
Q

What is weathering?

A

The process that slowly breaks down natural minerals like rocks and boulders in to smaller pieces

21
Q

What is mechanical weathering?

A

Weathering caused by a physical force

22
Q

What is ice wedging?

A

When water falls into the cracks of rocks, freezes, expands, and pressures the rock to widen

23
Q

What is chemical weathering?

A

When chemicals break down or weaken rock materials

24
Q

What is biological weathering?

A

When living things cause mechanical or chemical weathering

25
Q

How is water involved in mechanical and chemical weathering?

A

Mechanical: water can freeze and expand in rock cracks to cause ice wedging
Chemical: water can dissolve some rock materials

26
Q

What is erosion?

A

The movement of weathered rock materials from one place to another

27
Q

What is deposition?

A

The laying down of sediments

28
Q

What are the four things that help move weathered rock materials?

A

Gravity, wind, water, and ice

29
Q

What’s a valley?

A

A low region of land between hills or mountains

30
Q

What are plains?

A

Flat areas

31
Q

What is a delta?

A

An area where sediment has built up, and caused a river to fan out

32
Q

What’s a fiord?

A

The long, narrow inlets of the sea

33
Q

Give two ways each that erosion happens slowly and quickly:

A

Quickly: an avalanche and a dust storm
Slowly: a river moving billions of tones of rocks from the land it crosses and a glacier moving

34
Q

What is the rock cycle?

A

The ways igneous, sedimentary, and metamorphic rocks change from one to another

35
Q

How can an igneous rock become a sedimentary rock?

A

Igneous rock is weathered and eroded and becomes sediment. The sediment solidifies into sedimentary rock

36
Q

How can a sedimentary rock become a sedimentary rock again?

A

Turns to magma, hardens into igneous rock, weathered and eroded into sediment, and solidified into sedimentary rock

37
Q

What is a mineral?

A

Pure, naturally occurring substances that are found in Earth’s crust

Piano Exam (3 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions