Podcast
Questions and Answers
Which layer can flow despite being a solid?
Which layer can flow despite being a solid?
- Mantle
- Asthenosphere (correct)
- Crust
- Lithosphere
Which of these best describes the lithosphere's mechanical behavior?
Which of these best describes the lithosphere's mechanical behavior?
- Gaseous
- Plastic
- Brittle (correct)
- Liquid
What two parts of the earth are in the lithosphere?
What two parts of the earth are in the lithosphere?
- Crust and Mantle (correct)
- Crust and Outer Core
- Inner and Outer Core
- Mantle and Core
What analogy is used to describe the asthenosphere?
What analogy is used to describe the asthenosphere?
What causes the lithosphere to break?
What causes the lithosphere to break?
What does the lithosphere rest on?
What does the lithosphere rest on?
What are Earth's plates made of?
What are Earth's plates made of?
What is the approximate thickness of the Lithosphere?
What is the approximate thickness of the Lithosphere?
Which layer is located directly beneath the lithosphere?
Which layer is located directly beneath the lithosphere?
What is the composition of the asthenosphere?
What is the composition of the asthenosphere?
Flashcards
Lithosphere
Lithosphere
The rigid outer layer of Earth, composed of the crust and uppermost mantle.
Asthenosphere
Asthenosphere
The solid, upper mantle material that is so hot it behaves plastically and can flow.
Plates of Lithosphere
Plates of Lithosphere
Earth's plates consist of the lithosphere.
Lithosphere Behavior
Lithosphere Behavior
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Relative Positions
Relative Positions
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Study Notes
Lithosphere
- It consists of the crust and the portion of the upper mantle that acts as a brittle, rigid solid.
- It is the outermost mechanical layer that acts as a brittle, rigid solid.
- It is about 100 kilometers thick.
- Earth materials behave how it is defined
- The crust and the uppermost mantleare both brittle.
- It is rigid and brittle, so when stresses act on it, it breaks, creating earthquakes.
- Earth's plates are made of it.
Asthenosphere
- It is solid upper mantle material; it is so hot that it behaves plastically and can flow.
- The lithosphere rests on it.
Summary
- The lithosphere is the brittle crust and uppermost mantle.
- The asthenosphere is a solid, but it can flow like toothpaste.
- The lithosphere rests on the asthenosphere.
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