Loading the lesson
Loading the lesson
Search AllRounder.ai
Search the courses, subjects, tracks, games and features, or jump straight to a page.
Search the courses, subjects, tracks, games and features, or jump straight to a page.
Learn it your way
A short class with Sarah and her students. The other ways are under More.
Sign up free to listen. Transcripts are free to read.
Today, we’re discussing the distribution of water on Earth. Can anyone tell me what percentage of water is found in oceans?
I think it's around 90%?
Close, but actually, about 97.5% of Earth's water is saltwater in oceans. Now, can anyone tell me the significance of the remaining water?
Isn't that the freshwater we need for drinking and irrigation?
Exactly! Only 2.5% of all water on Earth is freshwater. Let’s break it down further: approximately 68.7% of this freshwater is locked in glaciers and ice caps. We can remember this as 'Ice = a Major Share of Fresh'.
What about groundwater then?
Good question! Groundwater makes up about 30.1% of freshwater. Does anyone know where the remaining fraction of freshwater is found?
Is it in lakes and rivers?
Yes, precisely! About 1.2% of freshwater is found in rivers and lakes. This emphasizes the importance of these bodies of water for both humans and ecosystems.
To recap, remember the percentages: Oceans are 97.5%, Freshwater is 2.5% with 68.7% in ice, 30.1% in groundwater, and 1.2% in rivers and lakes.
Why do you think the small fraction of freshwater is so important to us?
It’s crucial for drinking, right?
Absolutely! Freshwater is essential for drinking and agriculture—it's vital for our survival and food security. What might happen if we didn’t manage our freshwater resources wisely?
We might run out of clean water, which could lead to problems like famine or disease!
Exactly! Sustainable management is key. Remember, our water usage today affects future generations. What memory device can help us remember the significance of freshwater?
Maybe something like 'Freshwater Equals Future'?
Perfect! Let’s keep that in mind as we think about how to conserve and protect these vital resources.
Approximately 71% of Earth is covered by water, primarily in oceans.
Only 2.5% of Earth's water is freshwater, critical for human use and ecological balance.
Most freshwater is held in glaciers (68.7%) and groundwater (30.1%), with a small amount in surface waters.
Water in the sea, 97.5, Freshwater we must strive to keep alive.
Imagine a giant ice castle that holds the keys to drinking water—most is trapped in glaciers, while only a tiny stream flows in rivers.
Remember 'GGS-R' for Freshwater distribution: Glaciers (68.7%), Groundwater (30.1%), Surface water (1.2%).
F-G-S (Freshwater, Groundwater, Surface) to remember freshwater distribution better!
Term
What percentage of the Earth's water is freshwater?
Click to flip
Term
Where is most of Earth's freshwater stored?
Click to flip
Term
What fraction of freshwater is found in surface water?
Click to flip
Water that contains a high concentration of dissolved salts, primarily found in oceans.
Water with low concentrations of dissolved salts, necessary for drinking, agriculture, and industry.
Large masses of ice formed from compacted snow, storing a significant portion of Earth's freshwater.
Water located beneath the Earth's surface, stored in soil and rocks.
Water that collects on the surface of the ground, including rivers, lakes, and ponds.
Water on Earth is predominantly found in oceans, with a small fraction available as freshwater.
The Earth's water distribution reveals that about 97.5% of water is saltwater in oceans, while only 2.5% is freshwater, with the majority locked in glaciers and icecaps, groundwater, and a small amount in surface waters like rivers and lakes.
Water covers approximately 71% of the Earth’s surface, primarily as saltwater in oceans, which comprises 97.5% of total water resources. Only 2.5% of the Earth's water is freshwater, which is crucial for human consumption and various ecological functions. Among this freshwater:
This distribution emphasizes the limited availability of freshwater for human use and the importance of efficient management and conservation.