Questions and Answers
What are the three main layers of the Earth?
What is the crust?
The layer of rock that forms the Earth's outer skin.
What is the mantle?
The layer of hot, solid rock found beneath the Earth's crust.
What is the lithosphere?
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What is the asthenosphere?
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What is the lower mantle?
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What does the Earth's core consist of?
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The Earth's core is mostly made of which two metals?
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What is the outer core?
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What is the inner core?
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Study Notes
Layers of the Earth
- The Earth consists of three main layers: Crust, Mantle, and Core.
Crust
- The crust is the Earth's outermost layer made up of solid rock.
Mantle
- Located beneath the crust, the mantle is composed of hot, solid rock.
Lithosphere
- The lithosphere includes both the crust and the uppermost part of the mantle, forming a rigid layer.
Asthenosphere
- Found below the lithosphere, the asthenosphere is a soft, plastic-like layer of the upper mantle that allows for movement of the lithosphere.
Lower Mantle
- This region is hot but remains solid due to the immense pressure from the Earth's layers above it.
Earth's Core
- The core has two distinct parts: a liquid outer core and a solid inner core.
Composition of Earth's Core
- The Earth's core is primarily composed of iron and nickel.
Outer Core
- The outer core is a layer of molten metal that surrounds the inner core, existing in a liquid state.
Inner Core
- The inner core is a dense ball formed of solid metal, where extreme pressure prevents iron and nickel from becoming liquid.
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Explore the fundamental layers of the Earth through our flashcard quiz. Learn about the crust, mantle, core, and their characteristics to deepen your understanding of Earth's structure. Perfect for students and science enthusiasts!
