Question

An inversion of smoke escape occurs:

• A. if layer of warm air continually replaces cold air
• B. if layer of warm air acts like a lid and does not allow cold air and smoke to escape
• C. if hot air and smoke react to form smog
• D. if cold air acts as a lid and prevents escape of smoke and sulphur dioxide

Answer 1

The correct option is B if layer of warm air acts like a lid and does not allow cold air and smoke to escape

A temperature inversion occurs when warm air “caps” cooler air, causing smoke to become trapped in valley bottoms at night and in the early morning.

The trapped smoke generally begins to lift after the sun rises and heats the earth’s surface. Heat released from the earth’s surface warms the air near the ground which begins to rise and mix with cleaner air above.
Option B is correct.