Multiple choice

How does surface water become runoff?

  1. if rain doesn't evaporate or sink into the ground

  2. if snow doesn't evaporte or sink into the ground

  3. all of the above

  4. none of the above

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Runoff is defined as water from rain or snowmelt that does not evaporate or infiltrate the soil, instead flowing over the surface into bodies of water.