Theories and theorists
The slow movement of continents.
What is continental drift?
Why did Wegner think Earth's continents had once been one single continent.
What is because mountain ranges on different continents lined up?
Ways to learn about Earth's exterior
What is study rock samples?
Are these two sentences true or false:Mid ocean ridges are mountain ranges on the ocean floor
Mid ocean ridges can form islands
True
Heat that warms Earth's surface
What is radiation?
The man behind continental drift
Who is Alfred Wegner?
How did Wegner think mountains formed?
What is by continents bumping into one another?
Earth's layer that is under the greatest pressure
What is the core
Where does sea floor spreading happen
At mid ocean ridges
The transfer of heat by movement of particles in a fluid
Convection
The process that slowly adds new rock to the ocean floor
What is sea floor spreading?
Jagged pieces of Earth's surface
What are plates?
Two kinds of crust and what they are made of
Oceanic crust:basalt
Continental crust:granite
The process in which the ocean floor sinks into the mantle
What is subduction?
The layers of Earth that have convection currents
Mantle and core
The idea that Earth's plates move because of convection currents in the mantle.
What is plate tectonics?
Earth's plates move because of:
What is convection currents in the mantle?
Top and bottom layer of the mantle
Lithosphere and asthenosphere
Subduction:place and ocean effect
Happens commonly at deep ocean trenches and makes ocean floor smaller
Convection currents hot vs. cold directions
Cold goes down hot goes up
The man who thought of sea floor spreading
Who is Harry Hess?
Part A:the edges of 2 plates meet at a plate.
Part B:a break in the Earth's crust where blocks of rock have slipped past each other.
A.what is a boundary?
B.what is a fault?
List the two parts of the core and what they are made of
Outer core liquid metal
Inner core solid metal
Sea floor spreading ocean effect
Makes ocean bigger
Bonus:the size of the ocean does or doesn't change much?
A pot getting hot on a stove is an example of what heat transfer
Conduction