Question

describe how does the temperature relate to density and the movement of atmospheric gases? a as the air warms expanding its volume, decreasing its density, and the air molecules rise. b uv light causes air to warm its volume declines, density increases, and the air molecules sink. c the volume of air distends as it cools, while its density increases and the air molecules descend. d radiation cools the air and its volume extends, density diminishes, and the air molecules accelerate.

Explanation:

• For gases, density ($

ho=\frac{m}{V}$) is inversely related to volume. When air warms, according to the ideal - gas - like behavior (expansion due to increased molecular motion), its volume ($V$) increases. Since mass ($m$) is constant (assuming no addition or removal of air molecules in a local parcel), density ($
ho$) decreases. Less - dense air is buoyant and rises.

• Option B is wrong because when air warms, volume should increase (not decline) and density should decrease (not increase).
• Option C is wrong because when air cools, its volume should decrease (not distend).
• Option D is wrong because when air cools (radiation cooling), volume should decrease (not extend) and density should increase (not diminish).

Answer:

A. As the air warms expanding its volume, decreasing its density, and the air molecules rise.