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Energy Merit Badge
Transcript of Energy Merit Badge
@ the University of Iowa Energy THREE devices
how they work? Photosynthesis Chemical Energy Energy Resources Energy resources that supply the US with most of its energy Reusable Energy Requirements (1-4)
1.Do the following:
a. Find an article on the use or conservation of energy. Discuss with your counselor what in the article was interesting to you, the questions it raises, and what ideas it addresses that you do not understand.
b. After you have completed requirements 2 through 8, revisit the article you found for requirement la. Explain to your counselor what you have learned in completing the requirements that helps you better understand the article.
2.Show you understand energy forms and conversions by doing the following:
a. Explain how THREE of the following devices use energy, and explain their energy conversions: toaster, greenhouse, lightbulb, bow drill, nuclear reactor, sweat lodge.
b. Construct a system that makes at least two energy conversions and explain this to your counselor.
3.Show you understand energy efficiency by explaining to your counselor a common example of a situation where energy moves through a system to produce a useful result. Do the following:
a. Identify the parts of the system that are affected by the energy movement.
b. Name the system's primary source of energy.
c. Identify the useful outcomes of the system.
d. Identify the energy losses of the system.
4.Conduct an energy audit of your home. Keep a 14 day log that records what you and your family did to reduce energy use. Include the following in your report and, after the 14 day period, discuss what you have learned with your counselor.
a. List the types of energy used in your home such as electricity, wood, oil, liquid petroleum, and natural gas, and tell how each is delivered and measured, and the current cost; OR record the transportation fuel used, miles driven, miles per gallon, and trips using your family car or another vehicle.
b. Describe ways you and your family can use energy resources more wisely. In preparing your discussion, consider the energy required for the things you do and use on a daily basis (cooking, showering, using lights, driving, watching TV, using the computer). Explain how you can change your energy use through reuse and recycling. 5.In a notebook, identify and describe five examples of energy waste in your school or community. Suggest in each case possible ways to reduce this waste. Describe the idea of trade offs in energy use. In your response, do the following:
a. Explain how the changes you suggest would lower costs, reduce pollution, or otherwise improve your community.
b. Explain what changes to routines, habits, or convenience are necessary to reduce energy waste. Tell why people might resist the changes you suggest.
6.Prepare pie charts showing the following information, and explain to your counselor the important ideas each chart reveals. Tell where you got your information. Explain how cost affects the use of a nonrenewable energy resource and makes alternatives practical.
a. The energy resources that supply the United States with most of its energy
b. The share of energy resources used by the United States that comes from other countries
c. The proportion of energy resources used by homes, businesses, industry, and transportation
d. The fuels used to generate America's electricity
e. The world's known and estimated primary energy resource reserves
7.Tell what is being done to make FIVE of the following energy systems produce more usable energy. In your explanation, describe the technology, cost, environmental impacts, and safety concerns.
Biomass digesters or waste to energy plants
Fossil fuel power plants
Geothermal power plants
Nuclear power plants
Solar power systems
Tidal energy, wave energy, or ocean thermal energy conversion devices
8.Find out what opportunities are available for a career in energy. Choose one position that interests you and describe the education and training required. No one likes burnt toast! Nichrome Wire - alloy of nickel and chromium
Alloy - a metal made by combining two or more metallic elements Spring-loaded Tray Popping the Toast
1. Hold handle down 2. Power 3. Timer Circuit board 120 VOLTS!! INFRARED RADIATION! Let there be LIGHT! Bulb is hooked to power supply, an electric current flows through wires and filament
Electrons bump into the atoms in the filament -> vibrate and heat up
Atoms in filament boosted to higher energy levels and fall down
Heated to high enough level (4,000 degrees Fahrenheit) - VISIBLE LIGHT!
Tungsten filament - Guess length in typical incandescent lightbulb?
Will it catch fire?
Explain blackened light bulbs
Vacuum vs. Argon gas
Only 10% of light produced is VISIBLE The President lives in the...White House
Plants are grown in a...Greenhouse Uses
Extend a plant's growing season
From temperate climates, higher latitudes, to hot and arid areas
Heating a Greenhouse
Sheltered to trap heat via solar radiation
Controlling temperatures - proper ventilation (vents)
Of course H2O!
The Coverings - Specially designed to allow as much sunlight in as possible
The Flooring - Simple wooden slates to pressed dirt floors Types of Greenhouses Cold Houses and Cold Frames - Help start spring crops a few weeks early and extend fall growing season
Cool Houses - Warmer than above house, protects frost sensitive plants, like geraniums
Warm Houses - Orchids and ferns can grow over winter
Hot Houses - House tropical plants at around 60 degree F and higher Requirements (5-8) Sun's radiant energy can be converted with the addition of Water and Carbon Dioxide to create Oxygen and Sugar for the plant to use Chloroplasts are what makes leaves green, and they are also what takes the carbon dioxide, the water, and the light, and turns them into sugar and oxygen.
Plants use energy to grow, repair, and reproduce
Burning plants releases chemical energy as well in the form of light and heat Share of energy resources used by the US that comes from other countries Energy Resources Energy Resources Portion of energy resources used by homes Energy Resources Proportion of energy resources used by businesses Energy Resources Fuels used to generate America's electricity Wind Turbines
Capture energy of wind to produce electricity or pump water
One problem is that wind farms are located farm from where energy is needed
Used for heating or to convert sunlight into electricity; expensive
Ocean wave energy
2 types of energy produced: Thermal from sun's heat and mechanical from tides and waves
Rising and falling tides generate energy that can be converted to electricity Energy Systems Nuclear power plants
Fuel (uranium), control rods regulate fission, moderator (water) used to slow neutrons for uranium absorption, and a cooling system carries off heat
No CO2 or other emissions given off
Geothermal power plants
Radioactive decay of elements inside Earth produces heat; geothermal energy is used to heat homes and businesses Energy Systems Show you understand energy forms and conversions by doing the following:
A BSA Door Alarm Kit converts mechanical energy to electrical energy and then electrical energy to sound energy.