Question

describing motion in a convection current
which describes the motion in a convection current?
horizontal motion only
vertical motion only
linear motion
circular motion

Explanation:

Convection currents involve the movement of fluid (liquid or gas) due to temperature differences. Warmer fluid rises (vertical motion) and cooler fluid sinks (vertical motion), creating a circular - like pattern. But the key motion in convection is the up - and - down (vertical) movement of the fluid. Horizontal motion may occur as part of the overall circulation, but the primary and defining motion in a convection current is vertical. Linear motion implies a straight - line, non - looping movement which is not characteristic of convection. Circular motion is a bit of a misnomer as it's the vertical movement (rising and sinking) that drives convection.

Answer:

Vertical motion only