Show:
Volcanoes
Faults
Plate Boundaries
Clues from the Past
Drifting Continents
100
A mountain that forms where melted rock flows from an opening in the Earth's surface?
What is a volcano?
100
Most faults form near these.
What is plate boundaries.
100
The theory that Earth's surface is made up of plates that move.
What is the theory of Plate Tectonics?
100
The remains or signs of living things from the past.
What is fossils?
100
Scientists have concluded that Earth's continents continue to do this very slowly.
What is move?
200
This material is less dense than solid rock, so it moves upward and can flow through openings in the surface and form a volcano.
What is magma?
200
The name of the type of fault in which rocks slide past each other whiteout causing a difference in the height of either block.
What is the footwall?
200
The shaking of the ground that happens when rocks in the crust move and release energy.
What is an earthquake.
200
This mountain range runs northeast along eastern North America.
What is the Appalachain Mountains?
200
This means "all of Earth" and was the name of the one huge continent that existed when all of Earth's lands were joined.
What is Pangea?
300
This type of volcano erupts for a short period of time, has steep sides and erupts with ash and rocks.
What is a cinder cone volcano?
300
How the "hanging wall", the block that slopes over the footwall, got its name?
What is from the miners who hung lantern from walls that sloped.
300
This type of boundary is formed when plates move toward each other.
What is a convergent boundary.
300
A theory that explained that the continents had once been in positions different from those they are in today.
What is Continental drift theory?
300
The submerged edges of the continents.
What is continental shelves?
400
Quiet eruptions form this type of volcano.
What is shield volcanoes?
400
These types of faults often form in areas where the crust is being pushed together.
What is reverse faults.
400
The downward motion that occurs when one plate is pushed below the other is called this.
What is subduction.
400
The name of the scientist that developed the Continental drift theory.
What is Wegner?
400
The year that Alfred Wegner published his theory of continental drift.
What is 1915?
500
The Hawaiian Islands are made up of these types of volcanoes.
What is shield volcanoes?
500
In the winter that spanned these years, the was a shift in a deep fault which caused a huge earthquake and destroyed the town of New Madrid, Missouri.
What is 1811-1812
500
What the chain of mountains that may form along a divergent boundary beneath the ocean is called.
What is a mid-ocean ridge?
500
The fossils of these small, lizard-like animals played a key role in determining that the continents were once joined.
What is mesosaurus.
500
About this many years ago is when Pangea began to break up.
What is 200 million years ago?