Convection Currents Flashcards
1
Q
Why does a convection current form?
A
Because a heated fluid expands becoming less dense
2
Q
What are tecnonic plates made up of?
A
Pieces of crust and very top layer of upper mantle
3
Q
What is less dense, earths crust or upper mantle?
A
Earths crust
4
Q
What does the heat from the core do?
A
Warms up the lower mantle
5
Q
How are convesction currents created?
A
Heat rising and falling inside the mantle
