Question

what property of matter causes convection currents?
○ density
○ mass
○ volume
○ weight

Explanation:

Convection currents occur when a fluid (liquid or gas) is heated. Heating makes the fluid less dense, so it rises, while cooler, denser fluid sinks. This movement is driven by density differences. Mass is the amount of matter, volume is space occupied, and weight is gravitational force on mass—none of these directly cause convection currents like density does.

Answer:

A. density