WHY IS FRESH WATER SCARCE?

WHY IS FRESH WATER SCARCE?

activites

1. 
   
   List the main reasons for water scarcity.The main reasons of water scarcity are Variations in climate, water pollution, land degradation and population growth.


2. 
   
   What is a drought? What type of hardships do you think that a drought could cause if you were living in a poor country such as Ethiopia? A drought is a period of time when there is scarce amounts of water. It would be bad in countries such as ethiopia because it would result to hunger and low amounts of water.


3. 
   
   How does land degradation affect the supply of fresh water? It affects the fresh water supply because of salt water intrusion.


4. 
   
   (a) What is El Nino? Every 3-5 years in the pacific ocean and the coast of Peru, it is caused by reversal of the wind.hy does el nino often cause drought in Australia?


5. 
   
   Observe the map showing the global effects of El Nino in 1982-1983. (a) What effects does El Nino havo on the availability of fresh water? (b) Name the countries and describe the problems that arose from decreased rainall caused by El Nino. Africa: Reduced corn crop in sub-Saharan region.
   Indonesia: high air pollution levels, following forest fires.
   China: Agricultural land under threat from drought in northern regions and flooding in southern regions.
   Philippines: Lower rice harvest following drought.
   United States: Rainfall above normal in north-western states (double the historical averages.)
   Colombia: Fishing operators affected by lower catch (down 20%.)
   Peru: Flooding (also in Chile), fishing operators affected by lower catch as anchovy and Pacific sardine move offshore to escape warm currents (5 degrees Celsius above normal temperatures)
   Australia: Wheat exports threatened by drought conditions across grain-growing areas, particularly New South Wales.
   Papua New Guinea: Drought-related failure of food crops, leading to famine conditions requiring food aid.

WATER TREATMENT PLANT

WATER TREATMENT PLANT

On November the 12th we went to the water treatment plant, (aetra) with our class and the other classes who has math the same time as us.

STATION 1: Remove garbage through coarse an fine filters.

First, you remove the garbage from the water in a coarse filter. Our class was lucky because we got to see the process of the coarse filtering. Then the garbage that werent taken from the coarse filter were processed through a fine filter. We saw some small animals pass through the fine filters. What happened to those small animals?

STATION 2: Add in chemicals and stir to create floc.

In this step they added chemicals into the water which made the garbage clump together in this vomit looking thing. (but they recycle the floc and make them into bricks.)

STATION 3: Allow sediment and floc to settle at the bottom.

In this station the sediment and floc settle at the bottom so the water doesnt get dirty.

STATION 4: Water is filtered through one meter of sand.

In this step particles of water that you cant see are filtered. The sand gets changed every hour so that the sand is clean. They dont use normal sand they use special sand for the filtering.

STATION 5: Disinfectants are added to the water.

Now, they add disinfectants to the water so that they kill all the bacteria and germs inside the water, and after the water is filtered through the sand it goes to the disinfection part.

STATION 6: Testing is done to make sure water is clean and safe to drink.

Here they test the water in chemicals to make sure the water is potable. There are two ways to make sure water is safe to drink. It looks so much different! when they show it to you.

That is all the steps and process for cleaning water! Now you know that is hard to clean water. My favorite part of the trip was the last step when they showed us the water compared.

THE WATER CYCLE

THE WATER CYCLE

activites

1. What percentage of the world's supply of water is fresh water? 2.5 percent of water is fresh.
2. Where is the world's supply of fresh water found? Most of the worlds fresh water is located in rivers, lakes, soil, ice and underground.
3. Even though the supply of fresh water is abundant it is sitll a problem. Why? It is a problem because the amount of people and water isnt evenly spaced out.
4. Observe the map of world average annual precipitation. A: Describe the changes in rainfall that occur as you move from the southern to the northern tip of africa? B: Describe the changes in rainfall that occur as you move from the western tip of Australia along the Tropic of Capricorn.
5. Observe the map above of water availability per person. A: Which parts of the world appear to have a large amount of water available per person? B: Which parts of the world appear to have a small amount of water per person?
6. Observe the diagram of water use. A: What are the main uses of water? B: Which uses have increased the most over the last century?

The Water Cycle

Water Cycle

EVAPORATION is the process by which water is converted from its liquid form to its vapor form and then transferred from land and water masses to the atmosphere.


CONDENSATION is the opposite of evaporation. It takes place when water vapor in the air condenses from a gas, back into a liquid form,
and leaves the atmosphere, returning to the surface of the earth.




PERCIPITATION is when cloud particles become to heavy to remain suspended in the air, they fall to the earth as percipitation. Percipitation occurs in a variety of forms; rain, hail, sleet or snow.



INFILTRATION is the physical process involving the movement of water through the boundary area where the atmosphere interfaces with the soil.

My poem video -_-

Band Aids
By: Shel Silverstein

This poem is about how many band aids this one boy had and it turns out that he doesnt have a cut or a sore, just likes the band aids. ENJOY!