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Grade 9-GEO🌍 > MY NOTES > Flashcards

MY NOTES Flashcards

1
Q

Seafloor spreading

A

Ocean floor moving apart (MidATLANTIC RIDGE)

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2
Q

Converging boundaries

A

Plates are moving together and colliding

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3
Q

When two continent plates converge what happens

A

Folded mountains

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4
Q

True or false

Subduction always involves a continental plate

A

FALSE subduction always involves an oceanic plate

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5
Q

True or false

The oceanic plate moves over the continental plate while converging

A

False the oceanic plate moves under as it is lighter

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6
Q

Transform boundaries

A

Plates slide past each other

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7
Q

True or false

Transform boundaries cause volcanoes

A

False transform boundaries cause earthquakes

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8
Q

Hotspot

A

Super heated fixed plume of mantle in the mantle is forced to the surface as the plate moves over the plume, volcanoes become dormant and new ones form creating a volcanic chain

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9
Q

UNIT TEST

Cratons

A

Oldest rock on earth

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10
Q

UNIT TEST
True or false
Appalachian mountains formed as a result of pangea tru

A

TRUE Appalachian mountains formed as a result of pangea

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11
Q

UNIT TEST
True or false
The st Andrea’s fault is a famous convergent boundary

A

FALSE its a famous transform boundary

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12
Q

UNIT TEST

Earths core consists of gold and coper

A

FALSE earths core consists of iron and nickel

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13
Q

UNIT TEST
True or false
The mantle is the greatest volume of the EARTHS interior

A

True the mantle in the greatest volume of the earths interior

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14
Q

Western cordillera is Canada’s youngest geologic mountain chain

A

Yep

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15
Q

What is isostatic rebound

A

The uplift of the crust due to glacial retreat

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16
Q

What was Alfred wegener’s theory

A

Continental drift

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17
Q

Pangea occured

A

200 million years ago

18
Q

You can find what in the canadian shield

A

Ancient cratons

19
Q

What is till

A

Deposits from glaciers

20
Q

True or false

The mid atl ridge was the first discovery of a divergent plate

A

False first discovery of seafloor spreading

21
Q

What do hawaii and iceland have in common

A

They are both hotspots

22
Q

What is the mechanism behind plate tectonics that alfred wegener didnt know of

A

CONCECTION CURRENTS

23
Q

Rifting

A

Plates spreading apart

Water eventually fills the rift and an ocean begins to form

24
Q

Define the frost shatter process

A

When water seeps into ice and freezes and expands breaking off part of the mountain or glacier

25
Q

What are some of the things that glaciers can tell us

A

All the things in the environment while the glacier formed are trapped in the glacier we can reveal that part in time when the glacier was formed

26
Q

What are depositional features glaciers

A

Till and. Drumlins

27
Q

Glacier formation

A

Snowflakes –>granular snow–>Firn–>glacier ice

28
Q

Where does old seafloor sync back into the earth to be recycled

A

Convergence zones

29
Q

Where do tectonic plates float

A

The mantle

30
Q

When did Pangaea begin to break up

A

250 million years ago

31
Q

True or false a convergence zone is subduction

A

True a subduction zone is a convergent boundary

32
Q

True or false the deeper you go the older the rock

A

True true true

33
Q

True or false igneous rock is created from subduction zones

A

False igneous rock is created from volcanoes

34
Q

True or false metamorphic rock forms through heat and pressure

A

True

35
Q

True or false sedimentary rock forms through heat and pressure

A

False it forms from layers of sediments piling up

36
Q

Define mineral

A

Single chemical compound or element that is found naturally such as gold

37
Q

Define rock

A

A combination of different minerals found in the earths crust

38
Q

What happens when there are two faults

A

A rift valley forms such as the one in Africa

39
Q

What are the 2+ about outcomes of a convergent boundary

A

Folded mountains or A valley forms

40
Q

What can terminal moraine tell us

A

The direction that the glacier is traveling

41
Q

What do you call a large boulder carried by a glacier and then dropped

A

This is called an erratic

Grade 9-GEO🌍 (5 decks)

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