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Vocabulary
Structure of the Earth
Continental Drift Theory
Plate Tectonics
Miscellaneous
100
The thinnest layer of the Earth
What is the crust
100
There are ______________ main layers of the Earth.
What is four
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 thickest layer of the Earth
What is the mantle.
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

Plates float on top of the _______________________.

What is the asthenosphere or mantle.

300

Continental Drift Theory was not accepted because it did not explain this

why the plates were moving around

300

What are the two types of convergent boundaries and their resulting landforms that they create?

What is subduction (where ocean trenches are formed) and collision (where mountains are usually formed)

300
_________________ are a result from the build up of stress at a plate boundary.
What is earthquakes
400

Although the hottest layer of the Earth, this layer is solid metal


What is the inner core

400
The rigid part of the Earth including the crust and the upper mantle (makes up the plates of the Earth)
What is the lithosphere
400

Evidence of tropical plants were found on this continent

What is Pangaea

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

States that youngest rocks of ocean floor are at divergin boundaries, moving outward

What is the seafloor spreading

500
The Earth's crust is thinnest under the _____________________ and thickest under the _____________________.
What is thinnest under the ocean and thickest under the continents.
500

How many millions of years ago did Pangaea exist

approximately 250 -300 million years ago

500

Name 4 of the plates of the Earth

What is any of the following: North American plate, South American plate, Eurasian Plate, Indoaustralia plate, African plate, Antarctica plate, Nazca plate, Phillipines plate

500

This person used sonar to map the bottom of the ocean and discovered the mid-ocean ridge in the Atlantic Ocean.

Who is Marie Tharpe