Question

Where could convection currents form? check all that apply.in a sand dune in a freshwater lakein the atmospherein outer spacein earth’s mantle?

Answer 1

Convection currents form in atmosphere and freshwater lake. Convection currents occur when there is difference in temperature in both substances (eg. fluids). When there is a difference in temperature, the hot substance rises and the colder one sinks. The flow then will be form a hotter to the colder region. 

Answer 2

Answer:

in a freshwater lake

in the atmosphere

in Earth’s mantle:

on edge 2020