EVERYDAY SCIENCE

SCIENCE

EARTH SCIENCE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which process of the water cycle occurs when water absorbs 2260 Joules of heat energy per gram?
A
melting of ice
B
condensation of water
C
evaporating of water
D
freezing of water
Explanation: 

Detailed explanation-1: -As this occurs, liquid water absorbs energy, causing it to evaporate and form water vapor.

Detailed explanation-2: -Water has a physical property called the “heat of vaporization, ” which is the amount of heat required to vaporize water. The heat of vaporization of water is 540 calories/gram, or 2, 260 kilojoules/kilogram.

Detailed explanation-3: -It takes 2260 J to convert each g of liquid water into steam. The volume of increases greatly in going from liquid to gas. Heating steam, H2O(g): It requires 1.996 J to raise the temperature of steam by 1 deg C.

Detailed explanation-4: -Evaporation is the process that changes liquid water to gaseous water (water vapor). Water moves from the Earth’s surface to the atmosphere via evaporation. Evaporation occurs when energy (heat) forces the bonds that hold water molecules together to break.

Detailed explanation-5: -As the water-vapor molecules bounce around in the air, some of them come close to the mirror, which is cooler than the surrounding air. This causes the water-vapor molecules to lose heat energy (cool), slow down, and join to gether to form liquid-water droplets on the mirror. That’s called condensation.

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