Presentation on theme: "8th Grade Do Now 09/30/13 Essential Question: How is energy essential to our way of life? Objective: I can define Energy I can describe various forms of."— Presentation transcript:
1 8th Grade Do Now 09/30/13Essential Question: How is energy essential to our way of life?Objective:I can define EnergyI can describe various forms of energy.Homework: Bring in Poster Board for WednesdayDo Now: Set up do nows for week 9Explain conduction and give an example of how it transfers heat energy.Explain radiation and give an example of how it transfers heat energy.
4 Non-renewableWhat is non-renewable energy?Non – Renewable Energy - are sources that can not be replenished in a short period of time
5 Renewable EnergyRenewable Energy – is energy that can be replenished naturallyWhat is renewable energy?
6 Energy Efficiency and Energy Conservation Energy conservation - is any behavior that results in the use of less energy.Turning the lights off when you leave the room and recycling aluminum cans are both ways of conserving energy.What is Energy Conservation?
7 Energy Efficiency and Energy Conservation Energy efficiency - is the use of technology that requires less energy to perform the same function.In regards to the “musical chair” activity, how important is energy efficiency?What is Energy Efficiency?
8 Examples of Renewable Sources Geothermal- uses the heat that comes from deep rocks under the surface of the Earth.Hydroelectric- generated from running water. (United Streaming Video)What is geothermal energy?What is hydroelectric energy?
9 Examples of Renewable Sources Solar- The sun releases energy due to the nuclear fusion of hydrogen taking place within its core.The solar panels convert the sun’s energy into electricity. (United Streaming Video)What is Energy Efficiency?
10 Examples of Renewable Sources of Energy Wind- used to turn wind turbines and make electricity (United Streaming Video)Biomass- uses the energy from plants and waste materials to make electricity.For example, wood can be burnt to make steam that turns turbines to make electricityWhat is wind energy?What is biomass energy?
11 Examples of Non-renewable energy Oil and gas- fossil fuels that were formed millions of years ago. Organisms died and the carbon in their bodies was eventually turned into oil and gas.Coal-a fossil fuel that was formed millions of years ago when trees and plants died and formed a layer of peat. These layers continued to develop layers, which turned the peat into coal.What is oil and gas energy?What is coal energy?
12 Pros for Wind Energy It is renewable Wind is free Wind turbines do not produce pollutants or greenhouse gasesEventually, it can be cost effectiveWhat are the pros of wind Energy?
13 Pros of Solar Energy It is renewable Gives off no pollution Can be installed on rooftopsEventually, it will be cost-effective to the userAllows us to become less dependent on fossil fuelsWhat are the pros of Solar Energy?
14 Open Response Question Complete the open response question and place it into your class period box.Finished?Begin working on your alternative energy foldable
15 Cons for Solar Energy The cells are expensive Weather can impact the efficiency of solar cellsPollution can impact the efficiency of solar cellsWhat are the cons of Solar Energy?
16 Cons for Wind Energy Turbines can be damaged during storms Can be harmful to wildlifeNoise can be disturbingLow wind speed can impact efficiencyWhat are the cons of wind Energy?
17 Pros for Hydroelectricity No waste or pollutionCan be used throughout the worldEnergy is virtually freeMore reliable than wind, solar, or wave powerWater can be stored above the dam ready to cope with peaks in demandHydroelectric power stations can increase to full power very quickly, unlike other power stationsThe sun provides the water by evaporation from the seaCould eliminate the cost of fuelWhat are the cons of hydroelectric Energy?
18 Cons for Hydroelectricity Smaller models depend on availability of fast flowing streams or riversRun-of-the-River plants can impact the mobility of fish and other river lifeDams are very expensive to buildBuilding a large dam will flood a very large area upstream, causing problems for animals that used to live thereFinding a suitable site can be difficultWater quality and quantity downstream can be affected, which can have an impact on plant lifeWhat are the cons of hydroelectric Energy?
19 Pros for Nuclear Energy Costs about the same as coalDoes not produce smoke or carbon dioxideProduces huge amounts of energy from small amounts of fuelProduces small amounts of wasteIt is reliable.
20 Cons of Nuclear Power Nuclear waste is very dangerous. Nuclear power is reliable, but a lot of money has to be spent on safety.If things go wrong it can produce a major disaster.
21 8th Grade Exit SlipWhat are the four types of renewable sources of energy?
22 8th Grade Do Now 10/13/11Essential Question: How is energy essential to our way of life?Objective:I can describe various forms of energy.I can describe various factors that impact our Earth.Homework: Kyoto Protocol complete the lab worksheetDo Now:Take out your Mythbusters Testing the Greenhouse effect worksheet.Answer the following questions:What is one pro for biomass energy?What is one con for biomass energy?