Boundaries
When two plates slide against each other going opposite ways.
Transform boundaries
Who was the scientist who made the theory of the continental drift
wegner
Composed of the crust and the upper mantle
Lithosphere
What is the movement caused by the tendency of hotter less dense material to rise and colder more dense material to sink under the influence of gravity?
Convection
Undersea mountain chain caused by Divergent boundaries
Mid-ocean ridge
A divergent boundary is.....
When two plates pull apart
What is they continental drift theory?
The plates are spreading apart and they will continue to spread apart.
What is the asthenosphere?
The upper layer of the earths mantle, Below the lithosphere.
What is the inner most layer of the earth?
The core
What is an ocean trench?
An undersea valley caused by divergent boundaries.
When 2 plates collide
Convergent boundaries
What is the evidence that the continents are drifting?
Animal fossils found in two different places ocean apart
continents fitting together like puzzle paces
plants found in different places
Which Mantle does convection occur?
Asthenosphere
What is the core composed of?
Nickel and iron
How are Mountains formed?
Converging plates
when one plate slips under the other
subduction
whats another name for pangea
the super continent
Mesosphere
What causes volcanoes?
Convergent boundaries and subduction
When the sea-floor spreads and molten material rises and makes new crust
Sea-floor spreading
Which plate slips under the other to form valcanoes? Continental crust or oceanic crust
Oceanic crust
what continents was pangea made of
All of them!
North America
South America
Europe
Asia
Africa
Antarctica
Australia
Which is the thickest layer of the mantle?
Asthenosphere
What causes earthquakes?
Transform boundaries slipping
Explain why Florida is so flat.
We are not on a boundary line