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12 week assesment
Question | Answer |
---|---|
What are the income and expenses of Earth's water budget? | The income is precipitation, and the expenses are evapotranspiration(evaporation and transpiration) and runoff. |
What are some personal(individual or family) uses of water? | Personal uses of water include: drinking, cooking, washing clothes and dishes, bathing, watering lawn, washing cars, etc. |
What happens to 90% of the water used by cities and industry? Why is bad? | It is returned to rivers and lakes as waste water. It is bad because it can affect water quality-temperature, turbidity, sometimes toxins. |
How much of Earth's surface is covered by water? | Approximately 2/3 or 70%. |
How much of Earth's water fresh water? | Approximately 3%. |
What is desalination? | The process of removing salt from ocean water it drinkable. |
Name some of the different watersheds that we live in: | We live in the White Lake, Lake Michigan, Great Lakes, and Atlantic watersheds. |
Give examples of suspended load:__________, bed load:_______ and dissolved load:________ | Suspended load:silt and sand Bed load:larger pebbles/rocks Dissolved load: salt and other chemicals |
What is the effect of stream gradient on its discharge? | The higher(steeper) the gradient, the faster the stream is flowing, so more discharge(amount of water flowing). |
How does a meander become an oxbow? | Over time meanders become more pronounced. Eventually the river cuts across the narrow neck of land separating two meanders, which isolates meander and forms and oxbow(lake). |
What does a braided stream look like? | A braided stream is composed of multiple channels that divide and rejoin around sediment bars. |
What is an aquifer? | An aquifer is a body of rock or sediment in which large amounts of water can flow and be stored. |
What is the difference between porosity and permeability? | Porosity has to do with the amount of open spaces in a rock or sediment, permeability has to do with how those spaces are connected(allowing water to flow through). |
Name a permeable rock type: Name an impermeable rock type: | sandstone clay |
What are the two zones of an aquifer? | zone of aeration-spaces filled with air(or some water) zone of saturation-filled with water totally |
How does a perched water table form? | Forms when water collects on top of a layer of impermeable rock that is above the main water table. |
Give an example of a recharge zone. | Storm drains, old wells, waste dumps, near the ocean, etc. |
How does a cone of depression form around a well? | A cone of depression forms because of the over-pumping of groundwater. |
What causes water to be pushed up through an artesian well? | The force of gravity(weight of the water in the sloped aquifer) pushes water down and then up and out. |
What is a geyser? | an erupting hot spring |