Continental Drift
Plate Tectonics
Earthquakes
Volcanoes
Mystery
100

What is the name of the former supercontinent?

Pangaea

100

What is the theory of plate tectonics?

The idea that Earth's plates are constantly in motion.

100

How do earthquakes occur?

As a result of movement along breaks in Earth’s lithosphere (faults)

100

List the 3 types of volcanoes from least to most explosive.

Shield volcanoes, cinder cone volcanoes, composite volcanoes

100

Give an example of a composite volcano.

Mt. Mazama, Mt. St. Helens, Mt. Shasta, Mt. Fuji, Mt. Rainier, etc.

200

Who proposed the theory of continental drift?

Alfred Wegener

200

What are the 3 types of plate boundaries?

Divergent, convergent, transform

200

What are the 3 main types of faults?

Normal (divergent boundaries), reverse (convergent boundaries), strike-slip (transform boundaries)

200

What are the 3 types of places that volcanoes form?

Divergent boundaries, convergent boundaries, hot spots

200

As viscosity decreases, explosivity ____.

Decreases
300

What phenomenon is responsible for the movement of our continents (and ultimately the movement of our plates)?

Convection currents

300
What are the 3 types of convergent boundaries?

continental - continental, ocean - oceanic, continental - oceanic

300

What is the difference between an earthquake's focus and its epicenter?

Focus = spot underground from which earthquake originates

Epicenter = spot above the focus on Earth's surface

300

Define viscosity.

Resistance to flow

300

Who is the new head coach of UO's football team?

Dan Lanning

400

Present 2 pieces of information supporting Pangaea.

Fossils, marks from glaciers, plants. mountain ranges, rocks, etc.

400

What property is responsible for determining which plate subducts at a convergent boundary?

density

400

In what order do the 3 main types of seismic waves arrive?

P-waves, S-waves, surface waves

400

As silica levels increase, explosivity ______.

Increases

400

What are the two types of lava flows?

A'a and pahoehoe
500

Present 2 pieces of information that support seafloor spreading.

Occurs at plate boundaries, age of rocks increases away from mid-ocean ridges, sediment thickness increases away from mid-ocean ridges, reversing magnetic polarity

500

What type of boundary is found at mid-ocean ridges/is responsible for seafloor spreading?

Divergent boundaries

500

How do scientists measure earthquake intensity?

Modified Mercalli Scale

500

What are two after effects of volcanic eruptions?

Ash fall, lava flows, mudslide, pyroclastic flow

500
Which type of seismic waves cannot move through liquids? (Think about our demo!)

S-waves

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