Advanced Search
Search Results
395 total results found
Module 08: Response to disturbances
Module 8: Response to disturbancesRecall negative feedback (stable ships, relationships): greater the disturbance, the greater the restoring force (pendulums too)Resistance is how hard it is to move the pendulum (ecosystem) away from center Resilience is how f...
Module 04: matter
Overview: Frog book chapter 3: systems (3.1 and first part of 3.2 on your iPad) FR chapter 2: systems (modules 3,4,5 in the FR text, Goodreader on your iPad) Math bits: radioactive decay, pH Review:Chapter one was on overview of what Environmental Science is a...
Module 05: Energy
Module 5 (FINALLY!)Energy is the ability to do work (heard that before?)Units are joules ("jowles in England), and a few others (calories, Calories, BTU, kWh) Power is how fast you can do the work (climbing stairs or running up stairs), so Power = work/timeUni...
Modules 01-03: introduction
FR Module 1 ------------- Fracking-What is it? Why is it controversial? How has it changed how we generate electricity in our country? At what cost? Why is this politically important? Why are the solvents they use secret? What is the impact of these solvents o...
Module 01: introduction
FR Module 1 ------------- Fracking-What is it? Why is it controversial? How has it changed how we generate electricity in our country? At what cost? Why is this politically important? Why are the solvents they use secret? What is the impact of these solvents o...
Module 02: biodiversity
FR Module 2 --------------- Environmental indicators: what we know and can observe that indicate the condition of a system Ecosystem services: can be economic, direct or cascading (off shore oil for example, impacting fishing in the gulf of Mexico) Biodiversit...
Module 03: Scientific method
Sustainability: Thinking of forever Notice that these are not your usual "energy, food and water" items people think about. Sustainability is living within your means. Starbucks example... Ecological footprint: created by Jurgen Randers and Mathis Wackernagel ...
Module 29: Land use
APES Sem2 Fire weather: Download App Recording 20250112 1009 2.mp3 (audio/mpeg, 3.6 MB) http://technologyreview.com/gfi Download TR green index.pdf (application/pdf, 225.6 KB) Where are we? Unit 5, Ch. 10: Modules 29, 30: Land: public and private Next: Energy ...
Module 30: Public lands
Public Lands In the US, we classify public lands as Rangelands-open range, enables some ranching with leases National forests-old growth and new growth, limited forestry National parks-national treasures, limits on visitors, infrastructure (e.g. Denali) Nat...
Energy intro: units
energy->water->food->culture Energy: ability to do work. units: Joules or calories Power: how fast you do that work. units: Watt Demo: walk/run uphill: mass (convert lbs to kg) work done: mgh = mass x 10 x 3 work/time = power in Watts Watts/747 = hp calculate...
Module 34: Patterns of energy use
Mod 34-Patterns of energy use Non-renewable: not in your lifetime (argument made by one senator that nuclear power was renewable every billion years) Examples: fossil fuel (from fossils), nuclear energy Energy units: Joules, BTU (British thermal unit), quad = ...
Module 35: Fossil fuels
Module 35: Fossil fuelsCoal: From dead plants 280-360 million years ago Evolution: Peat->lignite->bituminous coal->anthracite Coal formation: n.b. as moisture is reduced, coal is cleaner, hotter burning (more carbon, less water)Know the formation of coal, and ...
Frog book Ch. 17: Energy
energy -frog book notes chemical energy: electrons nuclear energy: nuclei (protons, neutrons) combustion-usually oxygen, but any oxidizer (chlorine etc.) as well hydrocarbons usually CnHx + O2 -> CO2 and H2O Incomplete = CO (toxic to hemoglobin) food is CHO (a...
ROI-TCO worksheet
ROI/TCO lab The PV panel we tested in class produces 250 Watts in ideal sunlight. The cost for this panel today is about $0.50 per Watt Calculate the price for this panel If this panel collects 5.5 hours of sunlight per day, how many kWh does it produce each d...
Energy Primer
Energy primer Energy and power units: kW means kiloWatt, kilo = 1000 Watt named after a person, so capitalized 1000 Watts = 1 kW (note spelling) kW is a rate, like miles per hour or gallons per minute, so saying "kilowatts per hour" makes no sense, just like "...
Renewable energy at HPA
Renewable energy on our campus: Solar PV: radiation from the sun (visible) making electrons move in a special semiconductor material (silicon, made from sand), so photo (light) voltaic (Volts) = PV or photovoltaic. These release direct current (+ and -) energy...
Energy Tools
Energy labs-tools Kill-a-Watt Volts-should be around 120V, AC or DC? Amperes-only when loaded, test with hot water heater Watts-sometimes = volts x amps, but not always power factor: only 1.00 with heaters (ohmic loads) Hz: 60 here, 50 other countries Use to d...
Module 36: Nuclear Energy
Nuclear Energy Recall that since the beginning of steam driven electrical power generation, all we needed was something hot (wood, coal, oil) to boil steam and push a fan (turbine) which turned a generator. Nuclear power uses heat from a nuclear reaction. Bas...