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Mr. Belyea
Science The Earth's Resources-Lesson 2
| Question | Answer |
|---|---|
| how much of the earth's surface is covered by water | 75% |
| how much of the earth's water is fresh water | 3% |
| how much of the earth's water is salt water in the oceans | 97% |
| how much of the earth's water can be used | 1% is groundwater that can be used |
| what is groundwater | water from rain or snow that sinks into the earth and is stored there |
| what makes up .2% of the water on earth | the lakes, rivers,and streams |
| where is a tiny part of the water | in the atmosphere as vapor or droplets or ice crystals in the clouds |
| what kind of water is in the atmosphere | vapor, droplets and ice crystals in the clouds |
| where can places get water from | depending on the region that you live in you can get groundwater,water from lakes and rivers or you may have to get water from far away |
| where is the largest amount of the earths water | salt water in the oceans |
| what type of waters make up the earth's water | oceans salt water, glaciers, groundwater, lakes, rivers, streams and atmosphere |
| why do people use water | for industrial,agricultural and household purposes |
| what do industries use water for | to make many kinds of products, clean materials and cool equipment |
| why are some factories located near large supplies of water | because they use a lot of water |
| how do farmers use water | to grow food |
| what kind of water do farmers use | rain water or irrigation |
| why do farmers use irrigation | in areas that do not get much rain |
| how do you use household water | to wash and brush your teeth, make juice, clean the dishes |
| how do all living things use water | all cells need water for most life processes |
| what kind of life process do cells need water for | getting energy from food |
| what do the cells of all living things contain | water |
| what does water make possible | life |
| how is water polluted when it is used | when you brush your teeth or wash your hands it goes down the drain and water carries the waste from your home |
| how can you reduce water pollution | use less or conserve water |
| how do farmers conserve water | drip irrigations |
| what is drip irrigation | a method that brings water to individual plants not an entire field, or they can switch to crops that need less water |
| how do businesses and industries conserve water | by using water under very high pressure to clean parts, car washes can recycle the water used |
| what must happen to water carrying waste from homes and factories | it must be cleaned before it enters lakes, rivers or oceans |
| what are wastewater treatment facilities | they treat water to make it safe and clean |
| does wastewater from frarmlands get treated in wasterwater treatment facilities | no in goes into groundwater, rivers and lakes and can carry fertilizers and chemicals used to kill insects and weeds |
| how do farmers reduce water pollution | by using less chemicals and being more selective |
| what happens to fertilizers that end up in streams | it can cause tiny organisms to grow rapidly |
| what happens to the organisms in the streams | they die and decomposers break them down |
| what is used by the decomposer in the process of breaking down the organisms | oxygen |
| why is it bad to have fertilizers in our streams | they decomposers use too much oxygen to breakdown the dead organisms and there is little left for the fish and the fish may die |
| how can farmers reduce the amount of fertilizers | they use less each time, and they fertilize fewer times |
| how do farmers in Florida reduce fertilizers getting into the everglades | they direct the flow of the water into specially constructed marshes |
| how to the specially constructed marshes help reduce water pollution | the fertilized polluted water is used to grow the grasses that are in the marsh, when the water leaves the marsh it has less fertilizer in it |
Created by:
mloft
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