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The Hydrosphere All water on Earth. Hydrosphere Stations Stn 1- A Drop in the Bucket Breaking down the percentages of fresh and salt water Determine amount.

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Presentation on theme: "The Hydrosphere All water on Earth. Hydrosphere Stations Stn 1- A Drop in the Bucket Breaking down the percentages of fresh and salt water Determine amount."— Presentation transcript:

1 The Hydrosphere All water on Earth

2 Hydrosphere Stations Stn 1- A Drop in the Bucket Breaking down the percentages of fresh and salt water Determine amount usable to humans Stn 2- Water Cycle Labeling Identify major reservoirs (storage sites) for water Identify phase changes with each process Identify locations for each process taking place

3 Where is most of the earth’s water?

4 Can we drink this water? NO It is saline (salt) water 3.5% salt on average 97% of Earth’s water is salt water.

5 So where is the Freshwater? Ice Caps and Glaciers- not accessible to us Most of Earth’s freshwater is ice.

6 So where is the freshwater? Surface Water – lakes, ponds, river systems

7 So where is the freshwater? Aquifer- a rock formation that can store and allow for the movement of groundwater. Groundwater- water stored underground in aquifers

8 The Water Cycle Continuous movement of water through Earth’s systems (atmosphere, geosphere, biosphere) Driven by SOLAR RADIATION and GRAVITY

9 Water Cycle Processes (TRIPSEC) T ranspiration- plants release water vapor R unoff- water moving downhill across land I nfiltration- water seeping into the ground P recipitation- water falling from sky S ublimation- solid  gas E vaporation- liquid  gas C ondensation- gas  liquid

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11 Hydrosphere Stations Stn 1- A Drop in the Bucket Breaking down the percentages of fresh and salt water Determine amount usable to humans Stn 2- Water Cycle Labeling Identify major reservoirs (storage sites) for water Identify phase changes with each process Identify locations for each process taking place

12 Freshwater Watershed: the area of land that is drained by a river Therefore…pollution anywhere in a watershed may end up polluting a river

13 Groundwater Groundwater: water that is stored beneath the Earth’s surface in sediment and rock formations Water table: level beneath the Earth’s surface where the rocks and soil are saturated with water – Close to the surface – wet areas – Hundreds of meters below surface - deserts

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15 Freshwater Aquifer- a rock formation that can store and allow for the movement of groundwater. Groundwater- water stored underground in aquifers

16 Porosity and Permeability Porosity: the amount of space between the particles that make up a rock Permeability: the ability of rock or soil to allow water to flow through it

17 Groundwater Wells Well: a hole that is dug or drilled to reach groundwater.

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20 Recharge Zone Surface water recharges an aquifer Recharge zone: the area of the Earth’s surface where water percolates down into the aquifer (Infiltration)

21 October 2nd, 2015 Hand in Unit 1B homework questions Reminder! Unit 1 Test on Thursday, October 8 th, 2015 Homework: Read Chapter 11, Section 1 (Water Resources) Today: – Oceans – Work on study guide for test

22 Oceans

23 Ocean Water Contains salt – from rocks and underwater volcanic eruptions Salinity – concentration of all the dissolved salts. Average 3.5%

24 Temperature Zones Surface Zone – warmest, contains currents Thermocline – temperature drops rapidly with depth Deep Zone – average temp is 2 degrees Celsius

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26 What are the oceans good for? The ocean absorbs more than half of the energy from the sun Ocean currents distribute heat energy across the Earth, acting like a thermostat Phytoplankton provide 70% of Earth’s oxygen

27 Ocean Currents can distribute heat and regulate climate


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