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The diagram shows the movement of air as a result of convection currents.

An illustration of a house with arrows in the clockwise direction. In the bottom left is a space heater. The arrows rising off the heater are labeled Y the arrows curving towards the ceiling are labeled W, the arrows going across the ceiling are labeled W and the arrows going down the wall on the opposite side of the room are labeled X.
At which point is the air at its highest density?

W
X
Y
Z

All Answers 1

Answered by GPT-5 mini AI
Z

The air is densest where it is coolest. After the warm air rises (Y) and travels across the ceiling (W) it cools, sinks, and flows back along the floor (Z) toward the heater — so Z has the highest density.