Where is all the water?

# Where is all the water?

## Where is all the water?

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##### Presentation Transcript

1. LO: to know where all the water on earth is and why it is a limited resource Where is all the water? All of you will be able to describe the distribution of water using data Most of you will be able to explain why water is a limited resource Some of you should be able to suggest why water resources are becoming more precious

2. ?? • ?? • ?? • ?? • ?? • ?? • ?? • Seas and Oceans • Ice caps • Groundwater • Snow and Ice e.g. glaciers, snowmen • Lakes & rivers • Swamps, marshes and soil • Atmosphere (clouds etc.) Where is all the water? • In your rough book make a list of ALL the places you can think of where stores of water can be found. • When you have done that list them in order of which you think stores the most to the least.

3. There is 1,386,000,000 km3 of water on earth (including ice caps and atmosphere). Fresh water in groundwater, swamp water, rivers, and lakes (10,633,450 km3) Fresh water in all the lakes and rivers on the planet (93,113 km3)

4. 2. Use the information to describe where our water is. Consider how much is fresh / saline (salty) / frozen / underground etc.

5. 2. Use the information to describe where our water is. Consider how much is fresh / saline (salty) / frozen / underground etc.

6. ?? • ?? • ?? • ?? • ?? • ?? • ?? 3. Water doesn’t stay in the same place all the time, it moves around using something called the Hydrological (Water) Cycle. Cut out your diagram of the hydrological cycle and glue it in. The Water Cycle • Below your diagram glue in your key terms and match them up to their definitions. • The water cycle is a closed system. Why do you think it is called this? (The water cycle is a closed system because …) • How might humans affect the water cycle? • Can we get more water if we need it? Explain your answer

7. If the amount of water hasn’t changed why is it becoming more precious?

8. The River System Part of the water (hydrological) cycle is the River System. There are 4 main parts to the system and each has a role. Match each part to it’s description

9. The River System • Is the river system a closed system? Explain your answer • If humans affect the river cycle, they are also affecting the water cycle. How can humans affect the river cycle? • What would happen to the amount of water in the river system if there was a lot of rainfall for a period of time? Consider stores, transfers and outputs

10. transfer