10 Questions
What is the asthenosphere believed to be?
The zone upon which lithospheric plates of the Earth's crust move about
At what depth can the lower mantle be found?
Between 410 km and 2,900 km below the earth's surface
What is the Gutenberg discontinuity?
The border between the mantle and the core
What is the core of the Earth mainly composed of?
Mainly of the elements iron and a little silicon, sulfur, and oxygen
What is the outer core of the Earth?
A fluid layer about 2,300 km thick and composed of mostly iron and nickel
How many layers does the core of the Earth have?
Two layers
What is the purpose of the Mohorovicic Discontinuity?
To separate the crust from the mantle
What is the reason for the rock being solid in the lower mantle?
Due to the high pressures
What is the significance of the Gutenberg discontinuity?
It marks the border between the mantle and the core
What is the radius of the core of the Earth?
3,500 km
Test your knowledge of the Earth's internal structure, including the core, mantle, and crust. Learn about the characteristics of each layer and how they interact. Discover how scientists obtain information about the Earth's interior.
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