the hydrosphere all water on earth. hydrosphere stations stn 1- a drop in the bucket breaking down...
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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
Can we drink this water?• NO• It is saline (salt) water• 3.5% salt on average• 97% of Earth’s water is salt water.
So where is the Freshwater?
• Ice Caps and Glaciers- not accessible to us• Most of Earth’s freshwater is ice.
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
The Water Cycle
• Continuous movement of water through Earth’s systems (atmosphere, geosphere, biosphere)
• Driven by SOLAR RADIATION and GRAVITY
Water Cycle Processes (TRIPSEC)
Transpiration- plants release water vapor
Runoff- water moving downhill across land
Infiltration- water seeping into the ground
Precipitation- water falling from sky
Sublimation- solid gas
Evaporation- liquid gas
Condensation- gas liquid
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
Freshwater
• Watershed: the area of land that is drained by a river
• Therefore…pollution anywhere in a watershed may end up polluting a river
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
Freshwater
Aquifer- a rock formation that can store and allow for the movement of groundwater.
Groundwater- water stored underground in aquifers
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
Recharge Zone
• Surface water recharges an aquifer• Recharge zone: the area of the Earth’s surface
where water percolates down into the aquifer (Infiltration)
October 2nd, 2015
• Hand in Unit 1B homework questions• Reminder! Unit 1 Test on Thursday,
October 8th, 2015• Homework: Read Chapter 11, Section 1
(Water Resources)• Today:–Oceans–Work on study guide for test
Ocean Water
• Contains salt – from rocks and underwater volcanic eruptions
• Salinity – concentration of all the dissolved salts. Average 3.5%
Temperature Zones
• Surface Zone – warmest, contains currents• Thermocline – temperature drops
rapidly with depth• Deep Zone – average temp is 2
degrees Celsius
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