Names
Effects
Vocabulary
Plate tectonics
random
100
Alfred Wagner
Who is the first person to publish the idea that the earth was a single continent about 300 million years ago
100
Volcanoes
What is a negative effect of plate tectonics
100
crust
What is the thinnest outer layer of the earth
100
earthquakes and volcanoes are usually in relation to these
What is a plate boundary
100
The Himalayan mountains are the result of a _____________ boundary
What is convergent boundry
200
Du Toit and Holmes
Who is the only 2 people to support Alfreds idea of a previous single continent
200
Earth quakes
What is a negative effect caused by moving plates
200
Tectonic plates
What is a number of rigid, moving plates on earths surface
200
The mid-ocean ridge is an example of a ____
What is a divergent boundry
200
Hot air is less _____ than cold air
What is dense
300
Pangaea
What is the name of the super continent
300
mineral and oil deposits
What is a positive resource caused by plate tectonics
300
continental drift theory
What is the theory of continents slowly moving apart
300
4
What is the number of major plates on the earths surface
300
Earth quakes
What is the result of build up of stress at a plate boundary
400
Laurasia
What is the name of the north american plate
400
Mountains
What is a landform caused by plates colliding with each other
400
lithosphere
What is the part of the earth that includes the crust and the upper mantle
400
force that causes plates to move
What is convection currents
400
The San Andreas Fault in California is an example of a _______ boundary
What is transform boundary
500
Nazca
What is the name of the plate to the west of south america
500
Ring of fire
What is the area around the pacific plate with lots of volcanic activity called
500
sea floor spreading
What is the theory that young rocks at at divergin boundaries
500
two types of convergent boundrys
What is subduction and collision
500
This person used sonar to map the bottom of the ocean and discovered the mid-ocean ridge in the Atlantic Ocean.
Who is Harry Hess
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