Vocabulary
Volcanoes and Earthquakes
Continental Drift Theory
Plate Tectonics
Miscellaneous

100

The two waves emitted in an earthquake
What are the P and S waves?

100

This is the scale used to measure the intensity of an earthquake.
What is the Richter Scale?

100

Created the Continental Drift Theory
Who is Alfred Wegener

100

Earthquakes and Volcanoes are usually located in relation to these
What is a plate boundary

100

The Himalayan mountains are the result of a ___________________________ boundary.
What is convergent boundary

200

A number of rigid, but moving, pieces of Earth's surface
What is tectonic plates.

200

The point where an earthquake starts.
What is the Epicenter?

200

Evidence of matching animal fossils from two separate continents _____________________ and _____________________
What is Africa and South America

200

The mid-ocean ridge is an example of a ____________________ boundary and ___________________ occurs here where new ocean floor is formed.
What is divergent boundary; sea-floor spreading

200

Hot air or liquid is less ________________ than cool air or liquide
What is dense

300

The theory that all continents are fragments of Pangaea now drifting apart
What is the Continental Drift Theory

300

A crack in the crust where Earthquakes usually originate
What is a Fault?

300

Evidence of tropical plants were found on this continent
What is Antarctica

300

Name four of the major plates
What is any of the following North American plate, South American plate, Eurasian Plate, Indoaustralia plate, African plate, Antarctica plate, Pacific plate

300

_________________ are a result from the build up of stress at a plate boundary.
What is earthquakes

400

States that youngest rocks of ocean floor are at diverging boundaries, moving outward
What is seafloor spreading

400

A bowl-shaped feature of a volcano,usually found on the top, center.
What is the Caldera?

400

Pangaea existed this many millions of years ago
What is around 250 million years ago

400

This is the mechanism (what causes) the plates to move
What is convection cycles in the mantle

400

The San Andreas Fault in California is an example of a ____________________ boundary.
What is a transform boundary

500

Although the hottest layer of the Earth, this layer is solid metal
What is the inner core

500

A crack in the ocean crust that moves, forming islands.
What is a hotspot?

500

Continental Drift Theory was not accepted because it did not explain this
What is how the continents moved

500

The two types of convergent boundaries
What is subduction (where volcanoes often occur) and collision (where mountains are usually formed)

500

What evidence for Sea Floor spreading was found "frozen in time" in the sea floor?
What is Magnetic Reversals?