Evaporation and the Factors Affecting It

What is Evaporation ?

• It is the conversion of water into ice

• It is the conversion of ice into water

• It is the conversion of gas into liquid

• It is the conversion of liquid into gas

What Are The Factors Affecting Evaporation ? (select all valid options)

• Humidity

• Rigidity

• Temperature

• Winds Speed

• Dinesh

When humidity is higher, rate of evaporation is ............

Whats your favorite color ? (no seriously)

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Who Invented Evaporation and studied it ?

• Rakesh Holland

• Dinesh

• Nils Wallerius

• Bucklao

How does surface area affect Evaporation ?

• When the surface area is higher, then the rate of evaporation will decrease because warmer air can hold more water vapor

• Evaporation increases with an increase in surface area because the water molecules move rapidly when the water is heated and produce more kinetic energy.

• It makes Dinesh happy

• The rate of evaporation increases as when the surface area increases there is a more contact of liquid to the container thus resulting in evaporation to increase.

Which Cooling Device was mentioned in our PPT which used evaporation

• Sahara cooler

• Desert Cooler

• Air cooler

• Desert conditioner

Why Evaporation causes Cooling ?

• When a liquid evaporates, the particles of the liquid absorb heat from the surroundings and evaporates. So the surroundings become cold.

• When a liquid condensates, the particles of the liquid absorb heat from the surroundings and evaporates. So the surroundings become cold.

• When a liquid evaporates, the particles of the liquid move faster. So the surroundings become cold.

• When a liquid evaporates, Rakesh likes it. So the surroundings become cold.

Which of the following do you Think are the correct Factors that mainly affect evaporation

• Humidity, Temperature, Surface Area, Pressure

• Surface Area, Temperature, Rakesh and Dinesh

• Surface Area, Temperature, Humidity and Ice

• Humidity, Temperature, Surface Area and Winds Speed

In the activity - which metal was mentioned that was cold rolled and beaten up into thin sheets

• Gold

• Iron

• Aluminium

• Anger