Evaporation happens when a liquid substance becomes a gas. When water is heated, it evaporates. The molecules move and vibrate so quickly that they escape into the atmosphere as molecules of water vapor. Once water evaporates, it also helps form clouds.

False, Boiling takes place at a temperature where the vapor pressure of the liquid is equal to the local atmospheric pressure. Evaporation takes place at all temperatures at a rate that depends on temperature and the existing difference from saturated vapor pressure.

Heat (energy) is necessary for evaporation to occur. Energy is used to break the bonds that hold water molecules together, which is why water easily evaporates at the boiling point (212° F, 100° C) but evaporates much more slowly at the freezing point.

When temperature and wind speed are constant, but humidity increases, the rate of evaporation will decrease. When wind speed and humidity stay constant, and temperature increases, then the rate of evaporation will increase because warmer air can hold more water vapor than colder air.

Increase in temperature of water will increase the evaporation of water. It is because, on increasing the temperature, kinetic energy of water molecules increase and more particles get enough kinetic energy of water molecules increases and more particles get enough kinetic energy to go into the vapour state.

Evaporation rates are higher at higher temperatures because as temperature increases, the amount of energy necessary for evaporation decreases.

Temperature affects the rate of evaporation. The higher the temperature, the more molecules move, enabling them to escape from the surface of a liquid. Fill two same-size glasses with 2oz of water. This proves that the rate of evaporation is affected by temperature.

From this experiment, it could be concluded that all liquids evaporate at various rates, according to each liquid’s specific properties. Nail polish remover evaporated the fastest, followed by water, salt water, vinegar, orange juice and oil.

Answer. Humidity decrease the rate of evaporation. Temperature, wind and surface are factors that increase it’s rate.

Effect of the Surface area: Evaporation increases with the increase in surface area. It is because, the larger the surface area that is exposed to air, the more molecules will escape into the air. When the water is heated, the water molecules tend to move rapidly. This makes the molecules escape faster.

For example, 500 mL – 495 mL = 5 mL. Divide the volume of liquid that evaporated by the amount of time it took to evaporate. In this case, 5 mL evaporated in an hour: 5 mL/hour.

Normally pools see ¼ – ½ inch loss of water per day due to evaporation. This is roughly 2 – 4 inches per week. For a normal sized pool you will loose 25,000 to 50,000 gallons of water per year due to evaporation. This means I was putting a hose in the pool every 7-10 days to fill the pool.

If you divide the distance by the elapsed time, the result will be the rate of water loss (evaporation). To convert this evaporation rate in to gallons lost over a specific time period, you will need convert the measure into a volume.