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

The scientist who came up with 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

What do we call plates that are moving away from each other?

What is divergent boundary

200

The Mid-Atlantic Ridge exists at a _______ boundary

What is a divergent boundary

300
The theory that all continents are fragments of Pangaea now drifting apart
What is the Continental Drift Theory
300

This layer is made of liquid metal.

What is the outer core

300
Evidence of tropical plants were found on this continent
What is Antarctica
300

What do we call plates that are sliding side-by-side?

What is a transform boundary?

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 divergin boundaries, moving outward
What is seafloor spreading
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

Name two pieces of evidence that support Continental Drift

Same fossils across oceans

Tropical plants on Antarctica

Matching rocks and mountain ranges

Puzzle piece continents

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

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

What is how the continents moved

(OK - he didn't have enough evidence)

500

Occurs when the oceanic plate goes under the continental plate.

What is subduction?

500

The ring of fire's volcanoes are primarily caused by this type of plate boundary.

What is convergent boundaries / subduction?