Earth's Structure
Wegener's Theory
Tectonic Boundaries
Canadian Landforms
100
What is the Earth's thinnest layer?
Crust.
100
What is continental drift?
Describes how the continents moved over time and drifted apart from each other.
100
Name the type of tectonic boundary above.
Convergent Plates.
100
___________ forces formed the large volcano known as the Canadian shield.
Tectonic.
200
What is the Earth's largest layer?
Mantle.
200
How many major tectonic plates are there?
7
200
Name the tectonic boundary above.
Divergent plates.
200
What type of tectonic boundary caused the orogeny (mountain formation) of the Appalachian Mountains?
Convergent plates.
300
The Earth's core is the hottest and ________ part of the Earth.
Densest.
300
Pangaea was referred to as what?
Supercontinent.
300
What causes tectonic plates to move?
Pressure from the Earth core's heat.
300
The continental drift took place over ____ million years ago.
200
400
What is the Earth's mantle composed of?
Rock, minerals and water.
400
What does the word 'Pangaea' mean in Greek?
All Earth.
400
Provide an example of lateral plates in the world.
San Andreas Fault.
400
What caused the volcano (Canadian Shield) to erode down?
Rain and water.
500
The Earth core's temperature can reach up to ______o C.
6,000o C
500
Tectonic plates naturally move __ - __ centimeters per year.
2 - 15.
500
What causes divergent plates?
Convection currents.
500
What plate collided with the North American plate to form the Western Cordillera?
Pacific plate.