Presentation on theme: "Student Objective Warm Up"— Presentation transcript:
1 Student Objective Warm Up To explain how energy transformations produce electricityTo examine the energy source use in the United StatesWarm UpWhen a toaster is workingit is transforming what energyinto what energy?
2 BIG Question Here are two electrical energy devices - Energy Transformations and ConservationBIG QuestionHere are twoelectrical energydevicestransforming energy.But where do these devices getthe electrical energy? (Discuss)
3 Electrical Energy - Unique Electrical energy is unique from the other energy sources because it is a secondary source of energy.That means it must be “produced” or generated by another energy source.On the next slide you will begin a web exploration to answer these questions:What are the other energy sources?What energy sources are used to generate electricity?
4 Energy Sources Web Exploration First let’s watch a BrainPOP on energy sources.Using the web-link below complete the “Energy Sources Exploration”3. Finish worksheet using textbook pgsEnergy Exploration Worksheet goes with this activity.
5 AFTER you are finished ALL of the Energy Sources Exploration worksheet, check your answers on the next TWO slides.
6 a. Renewable - they are replenished in a short time. Energy Sources1. What are the nine energy sources used in the United States? __________________________________________________________________________________________________________________2. What are the two main categories of energy sources? Explain each.____________________________________________________3. What makes electricity different from other sources of energy?__________________________________________________________________________________________________________________5. What two sources are used the most in the United States? _________________________________________________________6. What category of fuel are these two sources in? _________________________________________________________7. What type of energy source are these 2 sources? ________________Biomass, hydropower, geothermal, wind, solar, petroleum (oil), natural gas, coal, & uranium (nuclear)a. Renewable - they are replenished in a short time.a. Nonrenewable - supplies are limitedIt is a secondary source of energy, it must be generated from other energy sources.coal & natural gasFossil fuelsNonrenewableGO ON
7 Fossil Fuels – coal, petroleum (oil), & natural gas Scan pages in textbook and answer these two questions:Where did the energy in fossil fuels come from?How is the energy in fossil fuels released?A fossil fuel’s energy comes from the sun and is stored in the plants & animals that converted the sun’s energy into chemical energy.A fossil fuel’s chemical energy is released when it is burned.
8 Energy Sources Web Exploration Look at these pie charts of the energy sources in the United States for 2007 & 2011 & compare with the graphic on your worksheet. How have our energy sources changed?