Evaporation and Its Effects

The video introduces evaporation, explaining it as the process where liquid turns into gas below boiling point. It covers factors affecting evaporation, such as surface area, temperature, and humidity, and provides examples from nature. The video concludes with a summary and a homework task about mirages.

What natural phenomenon is compared to magic in the video?

• Precipitation

• Sublimation

• Condensation

• Evaporation

What is the process called when a liquid turns into gas below its boiling point?

• Freezing

• Evaporation

• Sublimation

• Condensation

What happens to the molecules in a liquid when they gain kinetic energy?

• They freeze

• They condense

• They evaporate

• They solidify

Which factor does NOT affect the rate of evaporation?

• Surface area

• Color of the liquid

• Temperature

• Humidity

Which season is mentioned as having less humidity, aiding faster evaporation?

• Autumn

• Winter

• Spring

• Summer

What is the effect of a larger surface area on evaporation?

• It has no effect

• It speeds up evaporation

• It reverses evaporation

• It slows down evaporation

Why does sweat dry faster when you sit in front of a fan?

• The fan increases the temperature

• The fan decreases the humidity

• The fan increases the wind speed

• The fan decreases the surface area

What sensation does evaporation cause on the skin?

• Numbing

• Tingling

• Cooling

• Warming

How is salt produced from sea water?

• By freezing

• By filtering

• By boiling

• By evaporating

Approximately how much water does the sun evaporate each day?

• One hundred thousand tons

• One trillion tons

• One billion tons

• One million tons