Show:
Vocabulary
Structure of the Earth
Continental Drift Theory
Plate Tectonics
Miscellaneous
100
The thinnest layer of the Earth
What is the crust
100
Which would be a better model of the earth...peach or orange?
Peach skin=crust juicy fruit=mantle pit=solid core
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...they are still growing taller!
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
Name the large area of flat land on the ocean floor that covers 40%.
What is Abyssal Plan
300
The theory that all continents are fragments of Pangaea now drifting apart
What is the Continental Drift Theory
300
Will the continents of the earth always remain in the exact position they are now?
No, they are constantly changing.
300
Evidence of tropical plants were found on this continent
What is Antarctica
300
What is the name of the area where the majority of earthquakes and volcanoes happen?
What is Ring of Fire in the Pacific Ocean
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
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 due to pressure
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 this
What is how the continents moved
500
Convergent boundary where one plate slides below the other
What is subduction (where volcanoes often occur)
500
True or False The Atlantic Ocean is getting wider.
True - it is on a divergent boundary It is a very gradual process.