Brainscape's Knowledge GenomeTM

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


See full index

earth > earth > Flashcards

earth Flashcards

1
Q

Structure of earths core

A

Crust
Mantle
outer crust
inner crust

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

How are igneous rocks formed

A

Through the cooling and solidification of magma or lava

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

How are sedimentary rocks formed

A

Deposits of pre existing rocks or pieces of once living organisms

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

how do metamorphic rocks formed?

A

When rocks are subjected to high heat, high pressure

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

What is the rock cycle?

A

The rock cycle is a web of processes that outlines how each of the three major rock types form and break down based on different heat and pressure

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

what is superposition?

A

One of the principles of geology use to determine relative dating.

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

What is cross cutting?

A

Geologic feature which cuts another is younger then the feature being disrupted

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

What are inclusions?

A

When one rock formation contains pieces of another rock the included rock is older than the other rock.

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

What is relative dating

A

Relative dating estimates the time during which an organism lived
It compares the placement of fossils in layer of rock

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

What is radioactive dating

A

A method of dating rocks and minerals using radioactive isotopes

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

What is radio metric dating ?

A

Radiometric. dating uses decay of unstable isotopes

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

what do index fossils do?

A

Index fossils can provide the relative age of a rock layer

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

what are index fossils

A

Index fossils any animal or plant preserved in the rock record.

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

How do seismic waves provide evidence of earth interior crust?

A

The P wave can move through solids, liquids whereas S waves can only move through solids. This shows that if the S wave can move through it the core is solid.

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

when a rock cools faster what size are the crystals?

A

The crystals are smaller

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

What are intrusive rocks?

A

Igneous rocks that form from cooling magma under the earth. Usually have large crystals

17
Q

What are extrusive rocks?

A

Igneous rocks that for from volcanic activity near the surface. Usually small crystals

18
Q

Which type of rock is formed as a result of heat and pressure ?

A

Metamorphic

19
Q

Can a metamorphic rock change into an igneous rock? how?

A

Yes a metamorphic rock melts fuel to extreme heat under the earths surface then cools

20
Q

What are the main processes that form sedimentary rocks

A

Weathering and erosion
Deposition

21
Q

Factors that affect soil formation

A

Parent material
Climate
Life
Topography
Time

22
Q

What is physical weathering?

A

Erosion or wearing down of a rock
Water
Wind

23
Q

What is chemical weathering of a rock

A

Dissolution - Water dissolves minerals into solution

24
Q

What is the difference between a rock and a mineral?

A

A mineral is made up of one substance that would form crystals
Rocks are made up of minerals.

25
Q

What are the mineral properties

A

Colour, Lustre , Streak, Hardness

26
Q

what is a hydro sphere

A

All the water on the planet

27
Q

what is a bio sphere

A

All the living things on the planet

28
Q

What is atmosphere ?

A

The air on the planet

29
Q

What is a geo sphere

A

The land

30
Q

How do currents regulate climate and weather?

A

The ocean currents influence weather and climate by strong solar radiation, distributing heat and moisture around yhe globe

31
Q

What is condensation?

A

When gas turns into liquids. Gas turns into clouds.

32
Q

what is evaporation

A

process of turning liquid into gas

33
Q

what is transpiration

A

The water from
leaves that go into the sky

34
Q

what is precipitation

A

The water that falls from clouds back down to earth

35
Q

what is infriltation

A

water that soaks into the ground from the surface

earth (2 decks)

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