Chapter 2

Question 1

TERMS:

Pangea

Answer 1

Supercontinent that included all earths land masses. It existed from about 300 million to about 200 million years ago

Question 2

TERMS:

Plate tectonics

Answer 2

Theory that states that earths outer shell consists of plates that move causing earthquakes, volcanoes, mountains and formation of new crust

Question 3

TERM:

Convection current

Answer 3

Circular movement in a gas or liquid created by uneven heating

Question 4

TERM:

Erosion

Answer 4

Wearing away of earths surface followed by the movement to other locations of materials that have worn away

Question 5

TERM:

Eras

Answer 5

Major divisions of geologic time

Question 6

TERM:

Geologic time

Answer 6

History of earth from its formation to the present. Earths history might be divided into several major time periods called eras.

Question 7

TERM:

Geoscience

Answer 7

A general term used to describe a wide range of specialized scientific fields within the broad areas of geology And resources management

Question 8

TERM:

Sediment

Answer 8

Eroded material such as sand and gravel that is deposited by water wind and glacial ice

Question 9

GEOLOGIC HISTORY

Answer 9

The surface of the earth is a thin layer of moving plates and below these plates is material that also moves. Earthquakes indicate the movement of parts of the earths rigid upper layer

Question 10

PLATE TECTONICS:

Who discovered it and what is it

Answer 10

In 1915 Alfred Wegner a German scientist believed the answer was continental drift. About 300 million years ago the earths land masses collide and formed one supercontinent called PANGEA. In 1960 when technology was better was Canadian named J. Tuzo-Wilson

Question 11

PLATE TECTONICS:

4 pieces of evidence

Answer 11

1. Current land masses seems to fit together
2. Mountain chains around the world are roughly the same age
3. Animals and plate species were found on two different continents, with no possibility of crossing the oceans
4. Evidence of glaciers in southern climates and tropical fossils in northern climates

Question 12

THE KAYERS IF THE EARTH:

The crust

Answer 12

Topmost layer
Made of solid rock
Thickness- under continents (35 km)
- under oceans (5 to 12 km)
Lower boundary is the mohirovicic discontinuity

Question 13

THE LAYERS IF THE EARTH: the mantle

Answer 13

Layer under the crust
Goes down in depth of about 2 900km
Also made of solid rock ( but there is much greater heat and pressure at these depths)

Question 14

THE LAYERS OF THE EARTH: the core

Answer 14

The inner part of the earth

About 3 400 km in radius

Question 15

TERMS:

Continental drift

Answer 15

A theory by a German scientist Alfred Wegener stating that 300 million years ago of earths land masses which were in constant motion collided to form one supercontinent called Pangaea

Question 16

LANDFORM REGIONS:

Western coridillera

Answer 16

Covers B.C, little bit of ALBERTA, YUKON and NORTH WEST TERRITORIES. Main parts include Rocky Mountains, Coastal range (volcanoes), Interior plateau (formed by lava flow) is very rich in resources and attracts many tourists for its mountain slopes 1/8 of Canada’s population lives in this region

Question 17

LANDFORM REGIONS:

The interior plains

Answer 17

Large wide open area with no trees or mountains covers B.C, ALTA, SASK, MAN AND THE NORTH WEST TERRITORIES. Great thick soul for agriculture. View from above shows squares which measures out pieces for farmers large oil and gas attracts business and wheat, other crops and beef, cattle grow and dominate the landscape