L69: Bell Ringers R69: Water Consumption L70: Aquifer Depletion R70: Population Growth & Water L71: Non-Point Source Pollution R71: Point Source Pollution.

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Presentation transcript:

L69: Bell Ringers R69: Water Consumption L70: Aquifer Depletion R70: Population Growth & Water L71: Non-Point Source Pollution R71: Point Source Pollution 4/8/15 Bell Ringer: In what ways do humans deplete our freshwater resources?

R69: Water Consumption Divide your entire page into 2 columns: Ways We Use Water When I call on you, come up and tell the class ONE way you use water You need to write each persons way down in this column

R69: Water Consumption Divide your entire page into 2 columns: Ways We Use WaterWays We Can Conserve Water Now, as we take a sponge out… how can we conserve THAT water that we listed before? Write each way to conserve that water in this column

Questions: -What happens to the water level as we remove all the sponges? - What will happen if we keep using water at this rate? - What can we do about this situation?

L70: Aquifer Depletion What is an aquifer? An underground layer of wet rock or sediment. Water is in and around it and can move through it. It is PERMEABLE (liquids/gases can pass through) This water can be brought to the surface by natural springs or pumps

L70: Aquifer Depletion What is an aquifer?

L70: Aquifer Depletion Groundwater is the largest source of usable, freshwater in the world. We use groundwater for industrial, residential and agricultural needs.

L70: Aquifer Depletion HOWEVER…Pumping water out of the ground faster than it can be replenished causes problems: Lowering of water table Excessive pumping can lower the groundwater table, and cause wells to no longer be able to reach groundwater Increased Costs As water table lowers, water must be pumped farther to reach surface, using more energy and money

L70: Aquifer Depletion Reduced Surface Water Supplies When groundwater is overused, the lakes, streams and rivers connected to groundwater have a limited supply and become ‘lowered’ Land Subsidence Loss of support below ground due to overuse of groundwater. Soil collapses, compacts and drops Water Quality Concerns Excessive pumping in coastal areas can cause saltwater to move inland and upward, creating saltwater contamination in the water supply (saltwater intrusion)

Lowering of Water Table

Reduced Surface Water Supply

Land Subsidence

Salt Water Intrusion

R70:Population Growth and Water If you saw this picture on the front page of a news paper, what would it be titled?

R70: Population Growth and Water What is the main point of this article?

R70: Population Growth and Water Find 5 statistics in this article and write them down

R70: Population Growth and Water Explain 3 points that the author is trying to get across: