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A short class with Sarah and her students. The other ways are under More.
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Let's explore how water is distributed on Earth. Did you know that a staggering 97.3% of Earth's water is found in oceans and seas?
Wow! That's a huge percentage! But what about the rest of the water?
Great question! The remaining water is distributed in ice caps and glaciers, which make up 2.0%, and groundwater, which accounts for 0.7%.
And how much is left for us to use as freshwater?
Only about 0.03% of the total water is freshwater available for human use. Remember this—Oceans are vast, but freshwater is limited!
Let's think about the implications of having just 0.03% of water as freshwater. What does this tell us about water conservation?
It seems like we need to use water wisely since it's so limited.
Exactly! It's essential to conserve it. Protecting wetlands and efficient irrigation can help save freshwater.
Are lakes and rivers also considered part of that small percentage?
Yes! Lakes and rivers together make only 0.01% of the total water. They are critical ecosystems but are very limited!
Now, I want to compare the various water reservoirs. Can anyone tell me how much water is stored in groundwater compared to lakes?
Groundwater is 0.7%, while lakes are only 0.01% right?
Correct! Groundwater is vital for our drinking water. And remember, glaciers hold a significant portion too, at 2%.
What about the water in the atmosphere?
That's a tiny 0.001%. It shows how clouds and vapor are essential for weather but contain very little water overall.
Oceans are mighty, so vast and deep; freshwater is scarce, in a small heap!
Once upon a time, the oceans were proud to hold 97.3% of Earth's water. But the rivers and lakes realized they only had a tiny fraction, just 0.03%, which they needed to share wisely.
O-I-G-A: Oceans (97.3%), Ice caps (2%), Groundwater (0.7%), Atmosphere (0.001%).
FRESH: Finding Resources Efficiently Saves Humanity - reflecting the importance of preserving freshwater.
Term
Percentage of water in oceans
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Term
Percentage of freshwater available for drinking
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The combined mass of water found on, under, and above the Earth's surface.
Water that is not salty and is suitable for drinking and irrigation.
Water located beneath the Earth's surface in soil pore spaces and fractures of rock formations.
Thick layers of ice that cover large areas, mainly found in polar regions.
The section outlines the distribution of water on Earth, highlighting that the majority of water is found in oceans, with a small percentage available as freshwater.
In this section, we learn about the vast distribution of water on our planet, where 97.3% is in oceans and seas, 2% in ice caps and glaciers, and only a minuscule 0.03% is accessible as freshwater for human consumption.
The distribution of water on Earth is overwhelmingly dominated by oceans and seas, which account for 97.3% of all water. Ice caps and glaciers represent 2.0%, while groundwater constitutes 0.7%. Although lakes and rivers make up just 0.01%, the atmosphere contains 0.001% of total water. Notably, only about 0.03% of the total water available on Earth is suitable for human use, emphasizing the scarcity of freshwater resources. Understanding this distribution is crucial for global water management and conservation efforts.