Question

what number in the diagram below represents runoff?

Explanation:

Step1: Recall runoff definition

Runoff is water flowing over land (streams, rivers) to ocean.

Step2: Analyze diagram numbers

• 1: Ocean evaporation.
• 2: Transpiration (plants).
• 3: Cloud formation (condensation).
• 4: Precipitation.
• 5: Water flowing in rivers to ocean (runoff).
• 6: Infiltration to groundwater.

Answer:

5