Question

practice it! a group of students noticed that the windows looked frosty. there were tiny drops of water on the window. one student drew a heart on the window. another student asked, “how did that water get on the window?” each student had an explanation for what they observed. which of the following is the correct explanation? the water came from evaporation. the water evaporated from the air and landed on the window. the water came from someones fingers when they drew the heart. the water vapor condensed from a gas to a liquid because it cooled. the water was in the window all along. it just spilled out of the window.

Explanation:

Water vapor in warm air cools when it comes into contact with the cold window surface. This causes the water vapor to change from a gas to a liquid through the process of condensation, forming the tiny water - drops observed. Evaporation is the change from liquid to gas, and the other explanations are not consistent with the physical process occurring here.

Answer:

The water vapor condensed from a gas to a liquid because it cooled.