Search Results

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->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...

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 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 ...

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 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 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 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 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...

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...

e2: paving the way http://physics.hpa.edu/physics/apenvsci/videos/e2_videos/e2%20energy/3%20paving%20the%20way.mp4 https://elab.hpa.edu/apes/videos/e2/e2%20energy/ APES questions—e2 energy 3 paving the way How many gallons of gas does each American use each da...

e2 Coal and nuclear: http://physics.hpa.edu/physics/apenvsci/videos/e2_videos/e2%20energy/6%20coal%20and%20nuclear.mp4 https://elab.hpa.edu/apes/videos/e2/e2%20energy/ Jim Woolsey salt audio: https://elab.hpa.edu/apes/audio/20100626_wesat_05.mp3 APES questions...

Withgott 7e Chapter 19: Fossil fuels Chapter 20: Alternate energy Chapter 21: Renewable energy Frog Book on iPads: Chapter 17: non-renewable energy Chapter 18: renewable energy Friedland and Relyea 2e: Chapter 12: non renewable energy: modules 34-36 Chapter 13...

APES questions e2 growing energy http://physics.hpa.edu/physics/apenvsci/videos/e2_videos/e2%20energy/ https://elab.hpa.edu/apes/videos/e2/e2%20energy/ What is the basic difference between biofuels and fossil fuels? What is the time frame for collection of sol...

e2 Videos: (20 minutes each) https://elab.hpa.edu/apes/videos/e2/e2%20energy/ Harvesting the wind: community wind power in Minnesota APES questions This series unites economic opportunity with environmental issues. Why is this unique? What does this mean for y...

e2: energy for a developing world http://physics.hpa.edu/physics/apenvsci/videos/e2_videos/e2%20energy/2%20energy%20for%20a%20developing%20world.mp4 If you have difficulty viewing the video, please hold option while clicking on the link. This will download the...

You may notice that the Withgott 7e text divides energy into three main categories: Chapter 19: Fossil fuels Chapter 20: Conventional energy alternatives (nuclear, biofuels, hydropower) Chapter 21: Emerging renewable energy (solar, wind, geothermal, ocean, hyd...

This chapter rounds out the three chapter study of energy in the Withgott 7e text. These differ from the chapters on fossil fuels (19) conventional alternates (20) as these are new, renewable sources, where the others are not Sections: Part 1: Outline: Wind in...