Questions and Answers
How many miles thick is the inner core?
800 miles
What two metals are found in the inner core?
iron and nickel
How hot is the inner core?
9,000 degrees Fahrenheit
Why is the inner core a solid?
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How thick is the outer core?
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What is the outer core made of?
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What is the range of temperature in the outer core?
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What is the state of matter in the outer core?
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Why is the outer core a liquid instead of a solid?
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What is the mantle?
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How many miles thick is the mantle?
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Where is the mantle located?
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What is the top layer of the mantle made of?
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What is the bottom innermost layer made of?
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What is the whole mantle mostly made of?
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What is the crust?
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How many miles thick is the crust?
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What is the crust made of?
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Study Notes
Inner Core
- The inner core has a thickness of 800 miles.
- Composed primarily of iron and nickel.
- Temperature reaches approximately 9,000 degrees Fahrenheit.
- Solid state due to extreme pressure exerted by surrounding materials.
Outer Core
- The outer core measures 1,400 miles in thickness.
- Made up of molten iron and nickel.
- Temperature ranges from 4,000 to 9,000 degrees Fahrenheit.
- Exists in a liquid state due to lower pressure compared to the inner core, allowing the metals to remain molten.
Mantle
- The mantle is the thickest layer of the Earth, measuring 1,800 miles in thickness.
- Located between the crust and the outer core.
- The upper portion consists of hot solid rock, while the innermost layer is primarily composed of liquid rock.
- Mainly consists of silicon, aluminum, iron, and magnesium.
Crust
- The crust is the Earth’s outermost layer and ranges from 5 to 20 miles in thickness.
- Composed of various types of rocks, including granite, sandstone, and marble.
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Description
Test your knowledge on the Earth's inner core with these flashcards. Learn about its thickness, composition, and temperature. Perfect for geology students or anyone interested in Earth science.
