Brainscape's Knowledge GenomeTM

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


See full index

Planet Earth > Planet Earth 1-3 > Flashcards

Planet Earth 1-3 Flashcards

1
Q

What is a rock made of?

A

One or more minerals

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

What is a mineral made of?

A

One element, making a pure substance.
2 or more elements making a compound.

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

What is the mohs hardness scale?

A

Scale of minerals with a hardness value from 1-10.

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

What is the softest mineral on the mohs hardness scale?

A

Talc

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

What is the hardest mineral on the mohs hardness scale?

A

Diamond

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

How would you use the mohs hardness scale to test an unknown substance?

A

You would scratch it with one of the items on the scale

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

What are crystals?

A

Building blocks of minerals.
Occur naturally.
Have straight edges, flat sides, and regular angles.
Most grow in 6 shapes.

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

What is Lustre?

A

How shiny an object is.
(How much light reflects of it’s surface)

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

What is the difference between metallic and non metallic Lustre?

A

Metallic Lustre shines like a metal surface, while nob metallic Lustre has a duller shine.

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

What is streak?

A

The colored powder left when rubbing a mineral on a surface

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

What can you use to test streak?

A

An unglazed porcelain tile

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

What number on the mohs hardness scale wouldn’t leave a streak?

A

7+ because they are harder than the tile, and need to be crushed into a powder

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

What is the difference between cleavage and fracture?

A

Cleavage is breaking along smooth, flat surfaces
Fracture is breaking with rough or jagged edges

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

What is the difference between magma and lava?

A

Magma is melted rock ound beneath the Earth’s crust
Lava is when magma breaks through the Earth’s surface

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

What is intrusive rock?

A

When magma cools and hardens below Earth’s surface

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

What is extrusive rock?

A

When lava cools and hardens above Earth’s surface

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What are sedimentary rocks made of?

A

Sediments

18
Q

What is stratification?

A

Arrangement in visible layers

19
Q

What is compaction?

A

Each layer being squeezed together by the wight of the layers above

20
Q

What is cementation?

A

Minerals dissolve in water forming natural cement to stick large pieces together

21
Q

What are the 3 types of sedimentary rock?

A

Shale, sandstone, and conglomerate.

22
Q

What is shale formed from?

A

Formed from grains of clay or mud

23
Q

What is sandstone?

A

Harder, rougher rock formed from larger granules of sand

24
Q

What is conglomerate made of?

A

Rounded pebbles and small stone cemented together

25
Q

What does metamorphic rock mean?

A

Changed rock

26
Q

What is parent rock?

A

Another type of rock that, through extremely high pressure and heat below the Earth’s surface, will change

27
Q

What paths of the rock cycles could igneous rock take?

A

It could crystallize into metamorphic rock.
It could weather/erode into sediments.

28
Q

What paths of the rock cycle could metamorphic rock take?

A

It could melt into magma.
It could weather/erode into sediments

29
Q

What paths of the rock cycle could sedimentary rock take?

A

It could undergo heat and pressure, turning into metamorphic rock.
It could weather/erode into sediments.

30
Q

What is compost?

A

Decaying matter

31
Q

What is humus?

A

Dark colored portion of soil

32
Q

Where is generally fertile soil found?

A

Near rivers

33
Q

What is a soil profile?

A

How the layers of soil are divided

34
Q

What is erosion?

A

The movement of rock and mineral grains from one place to another

35
Q

What is mechanical weatheri ng?

A

The physical break up or disintegration of rocks

36
Q

What is chemical weathering?

A

Breaks down minerals through chemical reactions

37
Q

What is biological weathering?

A

The physical or chemical break down of rock cause by living organisms

38
Q

What are the 4 agents of erosion?

A

Glaciers, gravity, wind, water

39
Q

What are moraines?

A

Pile up of sediments on the edge of glacial path

40
Q

What are erratics?

A

Large rocks left behind

Planet Earth (3 decks)

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