The Earth Flashcards
How much is covered by desserts
1/8
How much is covered by mountains
1/10
How much is covered by forests
1/4
What is mantle
Hot soft rock 4000 c. Rock is molten and known as magma
What is the core
Hot metal, mainly iron and nickle. Outer core is molten but inner core is solid due to pressure
Where do plates meet
Plate boundaries
What is to transform
When plates slide past each other
What is converging
When plates collide
What is diverging
When plates move away from each other/ divide
Name all the plates
Eurasian plate, South American plate, North American plate, Ind Australian plate Pacific plate, Nazca plate, African plate, Antartic plate
How much of earths surface is covered by water?
2/3
How do plates move
Because they are on top of convection currents, molten rock, magma
What is continental drift
When continents move with their plates
How do volcanic mountains form
Underwater when magma spills through plates drifting, can become big enough to stick out of water
Name three volcanic islands
Iceland; kraftla, Hekla, Surtsey