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Vocabulary
Structure of the Earth
Supercontinents
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

The name of the supercontinent that existed ~250 million years ago

What is Pangaea

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

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

What is a transform boundary

300

The place where two plates meet

Plate Boundary

300
Plates float on top of the _______________________.
What is the asthenosphere
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
300
_________________ are a result from the build up of stress at a plate boundary.
What is earthquakes
400

Happens at the bottom of the ocean at divergent boundaries

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

TRUE or FALSE: Pangaea was the last supercontinent

FALSE

400

This is the mechanism (what causes) the plates to move

What is convection currents in the mantle

400

Hot air or liquid is less ________________ than cool air or liquid

What is dense

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

How old is the earth?

4.5 billion years old

500

Two things that happen at convergent plate boundaries.

What is subduction (where volcanoes often occur) and collision (where mountains are usually formed)

500

How many supercontinents have there been?

Scientists believe there have been 7