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Plate tectonics
More plate tectonics
Earth
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Definitions and more
100
This scientist proposed plate tectonics, but did not know how the plates moved
Who is Wegner?
100
New ocean floor is made by this process.
What is Sea-floor spreading?
100
This layer of Earth can be as thin as 2-3 miles.
What is the crust?
100
The planet that is closest to the size of Earth.
What is Venus?
100
Molten rock BELOW the Earth's surface?
What is magma?
200
The hottest layer of earth is call this_____________ and is made up of solid _________.
What is inner core, iron (and nickel)
200
The last time all the tectonic plates were together it was called.....
What is Pangaea?
200
This layer of Earth is responsible for our magnetic field.
What is the liquid outer core?
200
Rock that forms when magma cools and solidifies.
What is igneous?
200
When 2 plates collide, it can cause these to form. One example is the Andes
What is mountains?
300
What is the term for when 2 tectonic plates collide and one of them goes underneath the other one
What is subduction?
300
Movement of material due to differences in density is called
What is convection?
300
The lithosphere covers 2 major layers of Earth. They are the...
What is crust and upper mantle?
300
A testable idea that leads to a scientific investigation or experiment
What is a hypothesis?
300
These vent openings expel gases and magma
What is a volcano?
400
This is the plate boundary in which both plates are moving away from each other.
What is divergent?
400
The United states lies on the ___________________________________plate.
What is North American?
400
The tectonic plates move on top of this layer....it not the mantle...its call the...
What is asthenosphere?
400
Rocks changing from one form to another is called...
What is the rock cycle?
400
The ocean floor is made up of this dense type of rock
What is basalt?
500
This boundary is in California and is known as the San Andreas fault.
What is a transform boundary?
500
Deep canyons on the ocean floor are called.....
What is Ocean trenches?
500
The lower part of the mantle....
What is the mesosphere?
500
the explanation of some phenomenon that is based on observation, experimentation, and reasoning. It is supported by a large amount of evidence.
What is a theory?
500
Stress that occurs when forces act to stretch an object.
What is tension?