Earth's Water Sources and Composition

The video explores the distribution of water on Earth, highlighting that 71% of Earth's surface is covered by water, with 96.5% being salt water. Only 3.5% is fresh water, mostly trapped in ice and glaciers, with a small portion in rivers, lakes, and the atmosphere. The video concludes with a visualization of Earth's total water volume.

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

• 96%

• 85%

• 71%

• 50%

What is the primary component of salt water on Earth?

• Calcium carbonate

• Sodium chloride

• Potassium iodide

• Magnesium sulfate

What percentage of Earth's water is fresh and drinkable?

• 1.5%

• 2.5%

• 3.5%

• 4.5%

Where is the majority of Earth's fresh water located?

• In oceans

• In rivers and lakes

• In the atmosphere

• In ice and glaciers

What is the term used for fresh water found underground?

• Atmospheric water

• Saltwater

• Groundwater

• Surface water