Question

k-12 the water cycle
5/10
skill level
mastery
runoff is
a when water flows across earths surface
b when water falls from clouds to the earths surface
c when water in the air turns from gas to liquid, forming clouds
d when water on earth turns to gas and rises into the air

Explanation:

• Option a defines runoff: water moving over Earth's surface.
• Option b describes precipitation (rain/snow).
• Option c describes condensation (cloud formation).
• Option d describes evaporation (liquid to gas).

Answer:

a. When water flows across Earth's surface