2.2. Components of the Global Water Budget

Try these first

1. 1.

   What percentage of Earth's water is found in oceans?

   Hint

   Think about the largest water body on Earth.

2. 2.

   Name one natural water reservoir.

   Hint

   Consider freshwater sources.

3. 3.

   What percentage of Earth's water is found in the atmosphere?

   • 0.001%
   • 1.74%
   • 0.007%

   Hint

   Consider the smallest reservoir.

4. 4.

   True or False: Glaciers hold the majority of Earth's freshwater.

   • True
   • False

   Hint

   Think about freshwater storage locations.

5. 5.

   If global evaporation from oceans is approximately 425,000 km³/year and from land is 74,000 km³/year, calculate the total amount of evaporation.

   Hint

   Add both values to find the total evaporation.

6. 6.

   Discuss the potential effects on freshwater availability if glaciers continue to melt at an accelerated rate due to climate change.

   Hint

   Think about water reliance on glaciers.