SET 9

Front

What is the main difference between evaporation and boiling?

Back

Evaporation occurs at the liquid’s surface at any temperature, while boiling is rapid, bubble-based vaporization throughout the liquid at its boiling point.

Front

What conditions are required for boiling to occur?

Back

Boiling requires continuous heat supply and occurs at the boiling point of the liquid.

Front

What factors accelerate evaporation?

Back

Increased temperature, larger surface area, lower environmental humidity, and wind.

Front

How does evaporation contribute to cooling?

Back

Evaporation causes energetic molecules to leave the liquid, reducing the average kinetic energy of the remaining molecules, which results in cooling.

Front

What is an example of evaporation's cooling effect in everyday life?

Back

Human sweating and the cooling effect of refrigerants in refrigeration systems.

Front

Why do clothes dry faster on hot, windy days?

Back

Hot temperatures increase molecular speeds, and wind removes vapor, both of which accelerate evaporation.