Plate Boundaries
Name the two types of crust.
Oceanic and Continental Crust
Name the 4 damages Earthquakes can cause.
1. Shaking
2. Liquefaction
3. Aftershocks
4. Tsunami
Magma molten mixture of rock-forming substances, gasses, and water from the mantle.
Lava is magma that has reached the earth's surface.
Who is Alfred Wegener and what is the name of the theory he proposed?
Alfred Wegener is a German Scientist who proposed the theory of continental drift or Pangaea
What is an epicenter and focus point?
Epicenter-
Focus-
What is the ring of fire?
A volcanic belt formed by the many volcanoes that rim the Pacific Ocean
How is the Ring of Fire OR the Himalayan Mountains a result of a convergent boundary?
Pick one to describe.
When two tectonics plates collide and create an uplift, this creates mountains.
OR
When two plates collided and caused volcanoes to erupt around the edge of the Pacific Ocean, creating a chain of islands.
What is the rating scale used to measure earthquakes today?
The Moment Magnitude Scale
How many active or dormant volcanoes are located within the Ring of Fire?
450 active and dormant volcanoes?
How is the Mid Atlantic Ridge OR African Great Rift Valley a result of a divergent boundary?
Pick one to describe.
When two tectonic plates move apart, magma rises to the surface, creating an underwater mountain chain.
OR
When two tectonic plates move apart, magma is pushed on the rock above it, creating a valley, and causing the earth to separate.
What is the definition of a Tsunami?
This occurs when an earthquake jolts the ocean floor, plate movement causes the ocean floor to ride slightly and push water out of its wave. Next, is a huge wave.
The super-volcano located in North America.
Yellowstone National Park.
What is an example of a transform boundary?
The San Andreas Fault or a Tsunami.
When to plates are rubbing against each other, this creates a crack in the earth's surface or an underwater earthquake causing a huge wave.
What is the difference between P and S waves?
P waves are the first to arrive. They compress and expand like an accordion.
S waves arrive next. They vibrate side to side as well as up and down.
What is the life cycle of a volcano?
Active - erupting and has shown signs it may erupt in the future.
Dormant - has not erupted in a long time, but scientists expect it will awaken again.
Extinct - it is "dead" and unlikely to erupt again.