Plate Tectonic Theory
Plate Boundaries
Earthquakes, Mountains, and Volcanoes
Extra Vocab
Mystery Box
100
Alfred Wegner proposed that all the continents were once part of a super continent called this.
What is Pangaea?
100
This type of plate boundary
What is a transform plate boundary?
100
These geological events occur at transform plate boundaries.
What are earthquakes?
100
The crust and the upper portion of the mantle.
What is the lithosphere?
100
This is one of the two places where divergent boundaries are happening with two oceanic plates.
Iceland - Mid-Atlantic Ridge - Red Sea
200
The hypothesis that continents have slowly moved to their current locations is called this.
What is continental drift?
200
This type of plate boundary can create mid-ocean ridges.
What is a divergent plate boundary?
200
This specific type of plate boundary creates some of the largest mountain ranges in the world.
What are continental-continental convergent plate boundaries?
200
This represents the strength of an earthquake.
- Magnitude
- Newtons
- Z-waves
- Pascals
What is the magnitude?
200
This is the Volcano that erupted in 1980 in the Cascade Range in Washington State.
What is Mt. St. Helens
300
The circulation of magma caused by temperature differences in the mantle.
What is convection?
300
This type of plate boundary.
What is a convergent plate boundary?
300
These volcanoes can occur in the middle of a plate, rather than the plate boundary.
What are hot spot volcanoes?
300
Magma that has reached the earth's surface.
What is lava?
300
Where is one of the two places where continents are diverging that we discussed in class.
Where is either East African Rift Valley or Lake Baikal.
400
These are huge, moving slabs of rock that make up the earth's surface.
What are Tectonic Plates?
400
The process of one plate sliding under another and back into the mantle.
What is subduction?
400
The break or crack in a rock that causes an earthquake is known as this.
What is a fault?
400
When an earthquake happens, what is the first type of wave to arrive at the surface of the earth?
What is a P-wave (Primary)?
400
Which of these is the deepest lake in the United States?
A. Lake Tahoe
B. Lake Superior
C. Grand Lake St. Marys
D. Crater Lake
What is Crater Lake (1950 ft. deep)?
500
This technology provided important evidence for the theory by studying the ocean floor.
What is SONAR?
500
The process of new material forcing older material aside, causing plates to move apart.
What is seafloor spreading @ the Mid-Ocean Ridge?
500
Volcanic island arcs occur at this specific type of plate boundary.
What is an oceanic-oceanic convergent plate boundary?
500
These carry the energy of an earthquake and are labelled P and S.
What are seismic waves?
500
This volcano would possibly wipeout the city of Seattle if it erupted.
- Mad River Mountain
- Denali
- Mt. Rainier
- Mt. Hood
What is Mt. Rainier?