Evaporation & the Water Cycle

Question 1

Lily watches a puddle on a sunny playground disappear, then sees clouds forming and later rain falling. Which statement correctly describes what happened, using the right ideas about evaporation and condensation?

Accepted Answer

The water in the puddle warmed up, changed from liquid to a gas called water vapor (evaporation). The vapor rose, cooled, and changed back into tiny liquid droplets that made the clouds (condensation). Later the droplets fell as rain.

Answer

The water in the puddle turned directly into clouds because the sun heated it, and the clouds fell as rain because the water changed back into a gas.

Answer

The puddle stayed liquid while the sun made the air hotter, and the hotter air turned into clouds; the clouds turned into rain when they got cold.

Answer

The puddle froze into ice, which melted in the air to become clouds, and the clouds turned into rain when the sun shone.

Question 2

After a sunny afternoon, Sam sees that the small pond by his house is a little smaller and the sky becomes cloudy. That night, rain falls and the pond gets water again. Which statement correctly describes the whole process that happened?

Accepted Answer

Water in the pond turned into invisible vapor, rose into the sky, cooled to make clouds, and then fell as rain back into the pond.

Answer

Water in the pond froze into ice, floated up as snow, and melted back into the pond.

Answer

The pond water simply disappeared because the sun was very hot, and the clouds are unrelated.

Answer

Plants drank the pond water, turned it into sugar, and the sugar fell as rain onto the pond.

Question 3

In the water cycle, how does temperature influence the rate of evaporation?

Accepted Answer

Higher temperatures increase the rate of evaporation because more water molecules have enough energy to become gas.

Answer

Higher temperatures decrease the rate of evaporation because water molecules move slower.

Answer

Temperature does not affect the rate of evaporation; only wind speed does.

Answer

Higher temperatures cause condensation to occur more quickly, reducing evaporation.

Try three questions

Lily watches a puddle on a sunny playground disappear, then sees clouds forming and later rain falling. Which statement correctly describes what happened, using the right ideas about evaporation and condensation?

After a sunny afternoon, Sam sees that the small pond by his house is a little smaller and the sky becomes cloudy. That night, rain falls and the pond gets water again. Which statement correctly describes the whole process that happened?

In the water cycle, how does temperature influence the rate of evaporation?

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