What is plate tectonics?
The idea that the earth's crust is made up of plates that move
What is the idea that the earth is made up of plates?
Plate tectonics
What are convection currents?
The force that moves the plates.
What is convergent? What can form at this boundary
The name for 2 plate boundaries that are moving toward each other. They can form mountains and volcanoes
What are the three different types of volcanoes?
Composite
Cinder Cone
Shield
What is a divergent boundary? What can form at this boundary?
The name for 2 plate boundaries that are moving away from each other. Oceans can form there
State 2 pieces of evidence that support the Theory of Continental Drift.
What are...matching fossils, plants, mountains, glaciers, pieces fit together
If sea-floor spreading is taking place, the reason the earth isn't getting bigger and bigger.
What is subduction?
The earth's crust going under and getting destroyed
What is transform boundary? What can happen at the transform boundary?
The name of the boundary where 2 plates are moving past each other. Earthquakes can form here.
State 2 pieces of evidence that support the Theory of Continental Drift.
What are....
same fossils, plants, glacier and mountain shape on different continents. Coal found in arctic and tropics
What are the three plate boundaries? Describe the way that they move
What are..
Convergent - collide together
Divergent - divide away from each other
Transform - slide past each other
3 pieces of evidence that support the idea of plate tectonics.
satellite images that record movement, plotting earthquakes and volcanoes, and landforms that are the result of plate movement
Why do volcanoes, mountains, oceans, and earthquakes happen at plate boundaries?
This is where the plates are moving the most, either towards, away, or past each other. These natural disasters occur because the plates are moving.