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Brainstorm Energy ENERGY 7 Forms of Energy 1) 2) 3) 4) 5) 6) 7) Heat Chemical Light Electrical Mechanical Sound Nuclear Create 7 of these in your NotesOne for each type of Energy! Definition: Examples: Picture or Symbol: Interesting Info: Energy • The ability to do work • Involves either motion or position • There are many different types of energy • Law of Conservation of Energy states that Energy cannot be created nor destroyed only transformed from one form to another! In your notes… Energy = the ability to do work Renewable Resources = Can get back Nonrenewable Resources = Cannot get back Conservation = conserving/saving our resources Energy Resources • 1. 2. 3. 4. 5. 6. 7. Renewable and nonrenewable forms of energy (Brain Pop Natural Resources) Fossil Fuels (Nonrenewable) Brain Pop Solar (Renewable) Wind (Renewable) Water (Renewable) Nuclear (Renewable) Geothermal (Renewable) Biomass (Renewable) Renewable Resources • Natural resources that CAN be replaced by natural processes in a fairly short amount of time • Examples: Wind, Sun, Biomass, Nuclear, Water, Geothermal, etc. Nonrenewable Resources • Natural resources that either CANNOT be replaced or which may take millions of years to be replaced by natural processes. • Examples: Fossil Fuels - Oil, Coal, Gas, and Some Minerals Heat Energy Definition: the energy of moving particles of matter Examples: Solar, Fire, Chemical, Body, Electrical, Friction, Nuclear, Geothermal,etc Pic/Symbol: Interesting Info: There is more Heat Energy in an Iceberg than there is in a boiling pot of water! Heat vs. Temperature Heat= the number of molecules Temperature= the motion of molecules Which has more Heat? Which has more Temp? Boiling pot of water vs. Iceberg Ice Sculpture vs. Lit Match Chemical Energy Definition: Energy stored in the chemical compounds of food & fuel Examples: Fossil Fuels (Oil, Gas, & Coal) Wood, Stored in food, etc. Pic/Symbol: Info: One of our most abundant and important sources of energy! Light Energy Definition: Energy from the Electromagnetic Spectrum (EMS) Examples: Sun, light bulb, lightning, etc. Picture/Symbol: Interesting Information: Light is both a particle (photon) and a wave! Electrical Energy Definition: The energy of moving electrons. Examples: Power plant, batteries, static, current, etc. Picture/Symbol: Interesting Information: Alternating Current= when you plug something in! Direct Current= Battery (1 direction – to +) Mechanical Energy Definition:The energy of an object that is due to its position (potential) or motion (kinetic). Examples: Roller coaster at top of hill PE & Roller coaster going down hill KE Picture/Symbol: Interesting Information:Mechanical Energy allows an object to do work! Mechanical NRG = Potential NRG + Kinetic NRG Sound Energy Definition: Energy created by vibrating objects. Examples: sound from a speaker, radio, TV, wind, thunder, or someone’s voice Picture/Symbol: Interesting Information: Sound travels through a medium and the speed of sound depends on the density of the medium! Nuclear Energy • Definition: Uses atomic reactions to produce electricity. Examples: • Fission (split) and fusion (fuse) of radioactive nuclei Picture/Symbol: Interesting Information: E = mc2 • This mass can be changed into energy under the proper conditions according to Albert Einstein's famous equation: where E = energy, m=mass, and c=speed Potential Energy •Potential energy is stored energy/energy of position. •Ex) •The Potential Energy Equation •PE = mass x gravity x height •m = mass (in kg), g = gravity (9.8m/s2), and height (in meters) = potential energy (in J = joules). •There is an inverse relationship between potential and kinetic energy •As PE increase KE decreases and as PE decreases KE increases. Kinetic Energy • • • • • • Kinetic energy is the energy of motion. Any object that is moving has kinetic energy. Ex) Ball Moving, Wind, Sound The Kinetic Energy Equation KE= ½ mv2 m = mass (in kg), v = velocity (in m/s), and KE = kinetic energy (in J = joules). • There is a direct relationship between KE and mass and between KE and v squared. • Therefore as the mass goes up, KE goes up. And as v goes up, KE goes up.