Question

clouds are formed when water from the surface of the earth heats up to become a gas. this gas rises into the atmosphere and then cools back to a liquid form in the form of clouds. which two phase changes occur during this process and in what order? condensation then evaporation evaporation then freezing evaporation then condensation evaporation then sublimation

Explanation:

• Evaporation is the process where liquid water turns into water vapor (gas). In the problem, water from the earth's surface heats up to become a gas - this is evaporation.
• Condensation is the process where gas (water vapor) turns back into liquid. The gas (water vapor) rises, cools, and becomes liquid (clouds) - this is condensation.

Answer:

Evaporation then condensation.