Send the link below via email or IMCopy
Present to your audienceStart remote presentation
- Invited audience members will follow you as you navigate and present
- People invited to a presentation do not need a Prezi account
- This link expires 10 minutes after you close the presentation
- A maximum of 30 users can follow your presentation
- Learn more about this feature in our knowledge base article
Do you really want to delete this prezi?
Neither you, nor the coeditors you shared it with will be able to recover it again.
Make your likes visible on Facebook?
Connect your Facebook account to Prezi and let your likes appear on your timeline.
You can change this under Settings & Account at any time.
Would we ever run out of fresh water?
Transcript of Would we ever run out of fresh water?
If we ever run out of fresh water, will we have to use salt water???
Household activities we do everyday:
shower: 15-30 gallons of water (57-114 liters)
brush teeth: 1-2 gallons of water (3.75-7.75 liters)
washing dishes by hand: 20 gallons (75 liters)
washing dishes in dishwasher: 9-12 gallons of water (34-45 liters)
flushing toilet: 5-7 gallons of water (19-28 liters)
How much water do we use daily?
would we ever run out of fresh water?
That's the question that we have. Would we ever really run out of fresh water? After doing some research we found our answer! No, the earth will never run out of
as the amount of water on earth is fixed. However, even though we will never really run out of water we might run out of
. 97.5% of all water on Earth is salt water, leaving only 2.5% as fresh water, but only 1% of that water is available to us humans. As the Earth's population grows more people will need water and the amount of water usage will increase too. Therefore in the future we might actually run out of freshwater. So what happens when we do run out of freshwater? We answered one question to be left with a lot more to answer.
The average person uses about 123 gallons (466 liters ) of water daily. This number comes from some of the household activities we do everyday.
Are there ways we can change that???
Tips on how to conserve water:
1. If you accidentally drop ice cubes, Don't throw them in the sink, drop them in a house plant instead.
2. Washing dark clothes in cold water saves water and energy, and helps your clothes retain their colours.
3. Shorten your shower by a minute or two and you'll save up to 150 gallons per month
4. Time your shower to keep it under 5 minutes. You'll save up to 1000 gallons per month!
5. Turn off water while your washing your hair and save up to 150 gallons per month.
How does Canada's freshwater usage compare to other countries?
We might run out of fresh water. But you don't have to panic. Scientists and environmentalists are working on a way to cut the pollution and purify our water. But we should be careful on how much water we use and why we are using the water. Don't be wasteful because it's becoming an issue everyday. Water is taken for granted and that causes the value of water to increase.
CAN SALT WATER BE PURIFIED ENOUGH THAT WE COULD DRINK IT?
DO THEY PURIFY SALT WATER IN OTHER COUNTRIES?
Does freshwater taste the same in other places around the world?
Almost all water on Earth is salt water. We can't manufacture water. So what will happen if we run out?
In 1995, World Bank Vice President Ismail Serageldin said, "the wars of the next century will be fought over water" A war over fresh water might occur. But there are many desalination plants all over the world. Desalinization is a process that removes dissolved materials. This makes salt water drinkable.
Is it safe to drink?
The answer is yes! Salt water can be purified enough to be able to drink. There are already many technologies that have been developed for it. The down side is that it is expensive. There is a distillation process that makes fresh water by mimicking the natural water cycle . They heat the water thus making water vapor. The water vapor then condenses to make fresh water.
Yes they do purify salt water in other countries. 60% of desalination plants are in the Middle East. There are already 15,000 plants in 120 countries. Saudi Arabia has the world's largest plant and most of the plants are in the Caribbean and Florida.
BY: MARIAH, ASHLEY & HAREENA!
Most rainwater is safe to drink and is actually the water supply for much of the world's population. Levels of pollution, pollen, mold, and other contaminants are low, possibly even lower that our public drinking water supply. However rainwater does pick up low levels of bacteria as well as dust and occasional insect parts, so you may want to treat it before drinking it. You also shouldn't drink rainwater from hot radioactive sites or rainwater that has run of from plants or buildings.
In conclusion we have learned that yes, maybe one day we will run out of freshwater but there is no need for alarm. There are desalination plants, rainwater and other means in getting freshwater. We've learned that Canada contains 7% of the worlds renewable freshwater and that freshwater can taste different in other places around the world. We have also learned that they're are ways to help conserve water as to eliminate the fear of running out of freshwater. If we all take care of our water supply and not overuse it, then it will be there for many more years to come. Thanks for listening to our "prezitation", we hope you enjoyed!
Canada possess about 7% of the world's renewable freshwater and is second only to America in demand. Canadians use about 1650 cubic metres of freshwater per capita each year. That's more than double the average European rate.
How is Canada's freshwater quality compared to other countries?
Canada gets its freshwater from rivers, lakes, ponds and reservoirs. It had the second-best water-quality ranking among selected industrialized countries and is ranked 9th overall among 157 countries.
based on environmental performance index (EPI)
Rainwater is considered fresh water because salt does not evaporate into the air therefore when the water comes back down as precipitation there is no salt inside. However there can be other elements in rainwater since gases can easily dissolve in it.
Yes, water does taste different in other parts of the world. This is because of pollution (some areas are less polluted than the others). The pollution somehow dissolves with the water and this causes the water supply to taste different than in other places.
Unlike other countries Canada is very fortunate. It has only 0.5% of the worlds population, but it's landmass contains approximately 7% of the worlds renewable water supply (freshwater). Therefore we have greater percentage of renewable water than the population. So we don't have to worry about not having enough water for everyone. At least not just yet.
How much of the world's water does Canada contain?
Is rainwater freshwater or salt water?