Podcast
Questions and Answers
What percentage of Earth's water is freshwater that is suitable for drinking?
What percentage of Earth's water is freshwater that is suitable for drinking?
- 71%
- 68%
- 30%
- 3.5% (correct)
What is the largest contributor to freshwater on Earth?
What is the largest contributor to freshwater on Earth?
- Ice and glaciers (correct)
- Rivers, lakes, and streams
- Water vapor in the atmosphere
- Groundwater
If all the water on Earth were combined, what would be its approximate size?
If all the water on Earth were combined, what would be its approximate size?
- 1,000 miles wide
- 860 miles wide (correct)
- 1,500 miles wide
- 500 miles wide
What percentage of Earth's water is salt water?
What percentage of Earth's water is salt water?
What is a unique characteristic of the human body?
What is a unique characteristic of the human body?
What is the main component of salt water?
What is the main component of salt water?
Where is the majority of freshwater found?
Where is the majority of freshwater found?
What is the smallest portion of freshwater found in?
What is the smallest portion of freshwater found in?
What would the combined water on Earth form if it were gathered together?
What would the combined water on Earth form if it were gathered together?
What is the primary component of the human body?
What is the primary component of the human body?
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Study Notes
Earth's Water Composition
- Water covers 71% of Earth's surface.
- 96.5% of Earth's water is salt water, which contains various salts, mainly sodium chloride.
- Only 3.5% of Earth's water is freshwater that is suitable for drinking.
Distribution of Freshwater
- 68% of freshwater is trapped in ice and glaciers.
- A third of freshwater is in the ground, known as groundwater.
- The remaining 2% of freshwater is in rivers, lakes, and streams.
- A very small amount of freshwater exists as water vapor in the atmosphere, forming clouds.
Interesting Facts
- If all the water on Earth were combined, it would form a massive ball 860 miles wide.
- The human body is comprised mostly of water.
Earth's Water Composition
- Water covers 71% of Earth's surface.
- 96.5% of Earth's water is salt water, primarily composed of sodium chloride and other salts.
- Only 3.5% of Earth's water is freshwater suitable for human consumption.
Distribution of Freshwater
- 68% of freshwater is trapped in ice and glaciers.
- A third of freshwater is stored underground, known as groundwater.
- 2% of freshwater is found in rivers, lakes, and streams.
- A small amount of freshwater exists as water vapor in the atmosphere, forming clouds.
Interesting Facts
- If all of Earth's water were combined, it would form a massive ball 860 miles in diameter.
- The human body is largely composed of water.
Earth's Water Composition
- Water covers 71% of Earth's surface.
- 96.5% of Earth's water is salt water, primarily composed of sodium chloride and other salts.
- Only 3.5% of Earth's water is freshwater suitable for human consumption.
Distribution of Freshwater
- 68% of freshwater is trapped in ice and glaciers.
- A third of freshwater is stored underground, known as groundwater.
- 2% of freshwater is found in rivers, lakes, and streams.
- A small amount of freshwater exists as water vapor in the atmosphere, forming clouds.
Interesting Facts
- If all of Earth's water were combined, it would form a massive ball 860 miles in diameter.
- The human body is largely composed of water.
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