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Divergent Boundaries
Transform Boundaries
Theory of Plate Tectonics
Convergent boundaries
100

Created the Continental Drift Theory

Who is Alfred Wegener

100

Earthquakes and Volcanoes are usually located in relation to these

A plate boundary

100

The Himalayan mountains are the result of a ___________________________ boundary.

a convergent boundary

200
A number of rigid, but moving, pieces of Earth's surface
What is tectonic plates.
200

Evidence of matching animal fossils from two separate continents _____________________ and _____________________

What is Africa and South America

200

The mid-ocean ridge is an example of a ____________________ boundary and ___________________ occurs here where new ocean floor is formed.

divergent boundary; sea-floor spreading

200

Hot air or liquid is less ________________ than cool air or liquid

 dense

300
The theory that all continents are fragments of Pangaea now drifting apart
What is the Continental Drift Theory
300

_________________ are a result from the build up of stress at a plate boundary.

earthquakes

300

Name four of the major plates

North American plate, South American plate, Eurasian Plate, Pacific plate, African plate, Antarctica plate

300

_________________ are a result from the build up of stress at a plate boundary.

 earthquakes

400
States that youngest rocks of ocean floor are at divergin boundaries, moving outward
What is seafloor spreading
400

The San Andreas Fault in California is an example of a ____________________ boundary.

A transform boundary

400

This is what causes the plates to move

 convection currents in the mantle

400

The San Andreas Fault in California is an example of a ____________________ boundary.

What is a transform boundary

500
Although the hottest layer of the Earth, this layer is solid metal
What is the inner core
500
Continental Drift Theory was not accepted because it did not explain this
What is how the continents moved
500

The three basic boundary types

Transform, Divergent, Convergent

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!