Question

What activates a convection current, starting the flow of a fluid?

A.
cold temperatures at the north pole

B.
heated liquids at the earth’s surface

C.
iron-rich rocks in the mantle

D.
temperature differences in the mantle

Answer 1

Will medal!

Answer 2

@Secret-Ninja ?

Answer 3

I think it's B

Answer 4

I thought that too, but i'm also considering D. I don't know which one it is. :/

Answer 5

I'm leaning more towards B though. I would pick B. Let me know if you got it right. i apologize in advance in case I got it wrong. :)

Answer 6

I think it actually is D.

Answer 7

It is D

Answer 8

PandaGurl is offline..

Answer 9

Was it D @PandaGurl ?

Answer 10

yeah it was

Answer 11

Are you from k12? Or nah.