Questions and Answers
What are the four layers of the Earth?
What is the thickest layer?
Mantle
What is the thinnest layer?
Crust
How do we know what the inside of the Earth is like?
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What order are the layers in?
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Is the mantle liquid?
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What layer(s) are made up of iron and nickel?
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What are the three layers of the mantle?
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What layer(s) are liquid?
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What layer(s) are solid?
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What layer is granite in?
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What is thicker, oceanic crust or continental crust?
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Where is basalt mostly found?
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What are the three types of heat transfer?
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What layer does convection happen in?
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What type of heat transfer happens in a liquid?
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What type of heat transfer happens by touch?
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What type of heat transfer happens through air?
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Why does convection happen?
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Study Notes
Earth's Layers
- Four main layers: crust, mantle, outer core, and inner core.
- Crust is the thinnest layer, while the mantle is the thickest.
Mantle Characteristics
- The mantle is solid, not liquid.
- It consists of three sub-layers: lithosphere, asthenosphere, and lower mantle.
Core Composition
- Both the inner core and outer core are composed of iron and nickel.
- The outer core is the only liquid layer within the Earth's structure.
Crust Composition
- The crust contains granite, predominantly found in the continental crust.
- Basalt is primarily located in the oceanic crust.
- Continental crust is thicker than oceanic crust.
Heat Transfer Mechanics
- Seismic waves help determine Earth's internal structure.
- Three primary methods of heat transfer: convection, conduction, and radiation.
- Convection occurs in the mantle and involves the movement of liquid; denser, cooler substances sink while less dense, warmer substances rise.
- Conduction occurs through direct contact or touch.
- Radiation occurs through air or empty space, transferring heat without direct contact.
Convection Dynamics
- Convection drives the movement of materials due to differences in density, particularly affected by temperature variations.
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Description
Explore the four layers of the Earth through interactive flashcards. Learn about the crust, mantle, outer core, and inner core, along with their characteristics and how we understand them through seismic waves. Perfect for students studying geology or Earth science.
