Vocabulary
Hot fluid that comes out of a volcano
Lava
The inner most part of the Earth’s structure, divided into 2 layers.
Core
Two plates sliding past each other.
Sliding Boundary
The point on the surface of Earth directly above the focus.
Epic Center
A broad gently sloping volcano.
The two types of tectonic plates
Oceanic and Continental Plates
The largest layer, located just below the Earth’s crust.
Mantel
Two plates moving away from each other.
Divergent Boundary
The point inside the Earth where the earthquake begins.
Focus
A steep cone-shaped volcano made of layers of rock fragments.
Cinder Cone Volcano
Scientist study the interior of the earth by studying this: a boiling fountain of water that shoots up out of the earth
Geyser
The outer layer of the Earth.
Crust
Two plates that are moving toward each other.
Convergent Boundary
The San Andres Fault is located along this area.
Western United States or California
A cone-shaped volcano, but not as steep as others. They can rise to over 10,000 ft.
Composite Volcano
Magma
The solid upper part of the mantle that joins with the crust.
Lithosphere
When one plate rides up over another causing the other to be pushed down into the mantle.
Subduction
Waves created by an earthquake
Seismic waves
On opening where magma and gas erupt
vent
Cracks in the Earth’s crust where movement occurs.
Fault
The theory that the continents are moving slowly across the Earth’s surface.
Continental Drift
This person came up with the theory that the plates were once connected together and have been slowly moving apart.
Alfred Wegener
Scientists use this scale to measure the intensity of an earthquake
Richter Scale
Many volcanic mountain ranges that are located in the ocean
Mid-Ocean Ridges