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Flashcards in Test 2 Review Deck (36):
1

How many plates are there?

15

2

How fast do the plates move

2-3inches a year

3

Sir Francis Bacon

Plates fit like a puzzle

4

Alfred Wegener

Made up pangaea

5

Continental drift theory

Early 1900s
Alfred Wegener
Proposed there was a supercontinent

6

4 types of plate boundaries

Convergent- come together mtns
Divergent- go apart rift valleys
Transform/fault- slip/ grind past San Andreas fault
Subduction- plate gets sucked under

7

What states are over hot spots?

Hawaii
Wyoming

8

How thick is earth's crust?

5 to 22 miles thick
5 under the ocean

9

Inner core

1
Solid metal
Iron nickel

10

Outer core

2
Molten metal

11

Mantle

3
Thick layer of rock
1800 miles thick

12

Crust

4
Rocky surface
5-22, 5 miles under ocean

13

Gondwana

Gondwanaland
Southern subcontinent
135 million years ago

14

Pangaea

Supercontinent
200 million years ago

15

Laurasia

Northern subcontinent
135 years ago

16

Ring of fire

Circle of volcanoes surrounding the pacific ocean

17

Convection

A circular movement caused when a material is heated, expands and rises, then cools and falls.

18

Hot spot

Hot regions deep within the earth's mantle. Columns of magma rise from these regions towards the earth's surface.

19

Magma

Molten rock in the earth

20

Lithosphere

Soil
Rocks
Landforms
Other surface features

21

Atmosphere

Layer if air, water, and other substances above the surfaces

22

Hydrosphere

Water in oceans lakes and rivers and even under the ground

23

Biosphere

Plants animals etc

24

Relief

The difference in elevation between the highest and lowest points

25

Continental climate

The type of climate found in the great central areas of continents in the northern hemisphere characterized by cold snowy winters and hot summers

26

Front

Air mass

27

Climate

Weather patterns that an area typically experiences over a long period of time

28

Weather

The condition of the bottom layer of the earths atmosphere in one place over a short period of time

29

Precipitation

All the forms of water that fall to earth from the atmosphere including rain and snow etc

30

Two types of grasslands

Tropical
Temperate

31

Deciduous

Middle latitudes
Maple

32

Coniferous

Northern hemisphere
Cones
Pine

33

Biome

Major types of ecosystem

34

Ecosystem

Interaction of plant life , animal life , and the physical environment in which they live

35

Permafrost

Permanent layer of frost underneath the soil

36

2 main things that distribute heat

Convection
Wind