Characteristics of Earth Flashcards
1
Q
What is heat within the core mainly produced as a result of?
A
primordial heat left over from the Earth’s formation
radiogenic heat produced by radioactive decay of isotopes
2
Q
What is the mantle made up of?
A
- molten/semi-molten rocks
- light elements like silicon/oxygen
- asthenosphere
3
Q
What are the rocks like in the core?
A
Dense rocks containing nickel
3
Q
What is the inner core of crust like?
A
Solid, 5,100 km thick
4
Q
What is the outer core like?
A
Liquid, 2,900 km thick
5
Q
What is the temperature of the core?
A
Over 5,000 degrees
6
Q
What metals are in the crust?
A
Silicon, oxygen, magnesium, sodium and aluminium
7
Q
How thick is the crust?
A
1-100 km thick
