Vocabulary
Structure of the Earth
Continental Drift Theory
Tectonic Plates
Miscellaneous
100
What are horizontal layers of rocks?
What is strata
100
The thickest layer of the Earth is?
What is the mantle
100
Who came up with the Continental Drift Theory?
What is Alfred Wegener
100
What is a tectonic plate?
What is a a slab of Earth's crust or lithosphere
100
Name two events that can happen when plates move?
What is any of the following... volcano, earthquake, landformations
200
When one plate goes underneath another plate, this process is called.....
What is subduction
200
The rigid part of the Earth including the crust and the upper mantle (makes up the plates of the Earth)
What is the lithosphere
200
What is the name of the supercontinent Alfred Wegener believed existed?
What is Pangaea
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 Himalayan mountains are the result of a ___________________________ boundary.
What is a convergent plate
300
A crack in Earth’s crust along which movement takes place is a _________?
What is a fault
300
Plates float on top of the _______________________.
What is the asthenosphere
300
How long ago did Wegener believe the supercontinent existed?
What is 250 million years ago
300
What happens to crust in a divergent boundary?
What is crust is created
300
Hot air or liquid is less ________________ than cool air or liquid
What is dense
400
States that youngest rocks of ocean floor are at divergent boundaries, moving outward
What is seafloor spreading
400
What is more likely to subduct, oceanic or continental crust?Why?
What is oceanic crust because it is more dense
400
Name three pieces of evidence that supported Alfred Wegener's theory
What is connected mountain rangers, similar fossils, connected coastlines (fit like a puzzle), and glaciers (climate)
400
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 transform boundary
500
In a __________________, convection drives fluid through a circular path.
What is a convection current
500
The Earth's crust is thinnest under the _____________________ and thickest under the _____________________.
What is the ocean, continents
500
Continental Drift Theory was not originally accepted because it did not explain this
What is it did not explain HOW the plates moved
500
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
500
This person used sonar to map the bottom of the ocean and discovered the mid-ocean ridge in the Atlantic Ocean.
What is Harry Hess
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