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Science

QuestionAnswer
What is the name given to a person who studies the forces that make and shape planet earth? geologist
What do scientists use to determine the interior structure of the Earth? seismic waves
What are the layers of the Earth from outermost to innermost? crust, mantle, outercore, innercore
What is the composition of each layer of the Earth? Crust: hot basalt Mantle: hot rock Outercore: Molten metal, thick iron and nickel Innercore: solid iron and nickel
Which layer is the thickest? mantle
Which layer is the thinnest? crust
Where is the crust the thickest? under the continents
Where is the crust the thinnest? oceanic crust
What is the biggest difference between the innercore and the outercore? The inner core is solid metal, and the outer core is liquid metal.
The solid, rigid rock that is made of all the crust and the solid rock of the upper mantle is called what? The lithosphere
The soft, weak, gooey portion of the upper mantle where convection currents are thought to occur is called what? The asthenosphere
What is the force thought to move large pieces of Earth's crust including the continents? convection
Describe the process of convection. heats, less dense, rises, cools down, more dense, sinks
Where are convection currents thought to occur in the Earth? asthenosphere
Describe the theory of Continental drift. Continental drift was the pressure/force that spread the supercontinent out into how they are today. They then drifted to their present day locations.
What is the name of the supercontinent thought to have existed about 250 million years ago? Pangea
Why was the theory of Continental Drift first rejected? People wanted to know how the continents moved and Wegener couldn't tell them because he couldn't explain a force strong enough to move them.
Who is the scientist that developed the theory of continental drift? Alfred Wegener
Created by: hrrohn0823
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