History
Who created the Continental Drift Theory?
Alfred Wegner
What are the 3 types of plate movement?
Divergent, Convergent, and Transform
What are the 3 types of volcanoes?
Cinder cone, Shield, and Composite
What is magma called when it reaches the Earth's surface?
Lava
What are the 3 types of faults?
Normal, Reverse, and Strike-Slip
What is the name of the supercontinent in the Continental Drift?
Pangea
How many tectonic plates are there?
8
What are the 2 major volcanic belts?
Circum-Pacific and Mediterranean
What is a flood basalt?
Lava flows into the earth's cracks on the Earth's surface.
What percent of earthquakes occur at the Circum-Pacific Belt?
80%
What are ocean ridges?
What is the name of the deepest trench?
Mariana Trench
What type of volcano is most dangerous?
Composite
What is viscosity?
A material's ability to resist flow.
What causes tsunamis?
Underwater earthquakes
What causes magnetic reversals?
The flow of the core changes
Where are convection currents found?
In the mantle.
What type of boundaries do volcanoes form at?
Convergent and Divergent
What is a hot spot?
Place where magma comes to the Earth's surface.
What is the name of the scale we use to measure the magnitude of an earthquake.
Richter Scale
What is sea floor spreading?
The theory that explains how oceanic crust forms at ridges.
What are the 3 kinds of stress?
Compression, Tension, and Shear
What causes magma to be more explosive?
Interaction with crust, Temperature, Amount of Silica, Pressure
What is magma made up of?
Molten rock, mineral crystals, and gases.
What is a focus?
The starting point of an earthquake