Question

What is Evaporation factors affecting the rate of evaporation

Answer 1

There are four factors affecting the rate of evaporation -
1. Temperature - rate of evaporation increases with increase in temperature.
2. wind speed - rate of evaporation increases with increase in wind speed
3. Humidity - The rate of evaporation decreases with increase in rate of evaporation.
4. surface area - the rate of evaporation also increases with increase in surface Area

Answer 2

1. Evaporation increases with an increase in the surface area

EXPLAINATION==>

If the surface area is increased, then the amount is of liquid that is exposed to air is larger. More molecules can escape with a wider surface area. For e.g. We spread out clothes to dry. We do that because that speeds up the process of vaporization.

2. Evaporation increases with an increase in temperature

EXPLAINATION==> The water molecules move rapidly when the water is heated. This makes the molecules escape faster. Higher temperatures lead to increase in vaporization as more molecules get kinetic energy to convert into vapor. For example, boiling water evaporates faster than fresh tap water.

3. Evaporation increases with a decrease in humidity

EXPLAINATION==>

Humidity means the amount of vapor present in the air. The air around can only hold a certain amount of vapor at a certain time and certain temperature. If the temperature increases and the wind speed and humidity stay constant, then the rate of evaporation will increase since warmer air can hold more water vapor than colder air.

4. Evaporation increases with an increase in the speed of wind

EXPLAINATION==>

Particles of vapor move away when the speed of wind increases. This leads to a decrease in the amount of water vapor in the atmosphere. For example, we use hand dryers to dry our hands. Here the wind is expelled from the hand dryer which dries our hand.