Water Distribution Across Earth: Understanding Our Planet's Blue Resources

The video explains the global distribution of water on Earth. It highlights that 71% of the Earth's surface is covered by water, with 96.5% in oceans, streams, and bays. Ice caps and glaciers hold 1.74%, while groundwater accounts for 1.69%. Soil moisture, lakes, atmospheric moisture, swamps, rivers, and biological water make up the remaining small percentages. The video also distinguishes between freshwater and saline water in various sources.

What percentage of the Earth's surface is covered by water?

• 90%

• 85%

• 71%

• 50%

Which of the following contains the largest percentage of Earth's water?

• Ice caps

• Groundwater

• Oceans

• Rivers

What percentage of Earth's water is found in ice caps, glaciers, and permanent snow?

• 1.74%

• 2.5%

• 3.1%

• 4.0%

What is the term for the point where porous rock and saturated rock meet?

• Watershed

• Permafrost

• Aquifer

• Water table

What percentage of Earth's water is found in soil moisture?

• 0.001%

• 0.1%

• 1%

• 0.01%

What is the primary role of root zone soil moisture?

• To create rivers

• To form glaciers

• To provide water for plants

• To support aquatic life

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

• 1.3%

• 13%

• 0.013%

• 0.1%

Which type of lake contains more water, freshwater or saline?

• Freshwater lakes

• Saline lakes

• Both are equal

• Neither contains water

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

• 1%

• 0.1%

• 0.01%

• 0.001%

What is biological water?

• Water in oceans

• Water in rivers

• Water surrounding biomolecules

• Water in glaciers