Exploring Energy: Sound, Electricity, Magnetism, and Physics
Delve into the diverse forms of energy such as sound, electricity, and magnetism within the realm of physics. From the vibrational waves of sound to the generation of electricity using various sources like fossil fuels and nuclear reactors, this exploration covers the fundamental principles and applications of different types of energy.
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Presentation Transcript
Sound, Electricity & Magnetism Physics - Energy
Review ENERGY What forms does energy take? Ms. Lench * Mechanical * sound (waves) * Light (radiant) * electrical * nuclear *chemical *heat (thermal)
Sound energy Sound Waves Can be used to clean things, instead of using water & soaps. Natural World Echo location whales, dolphins
Music to our Ears Activity Tuning Forks Reverberation of sound at a specific frequency, tone. Pitch frequency of the sound wave Hammer, anvil & stirup 120 dB - deafness Humans Hear: 20 - 20,000 hertz, Hz Dolphins 150,000 Hz, elephants 12,000 Hz
Electric Energy Electricity + Positive Charge - Negative Charge Opposites attract Like charges Repel Generate electricity through generators powered by turbines, powered by steam or water.
Fossil Fuels power electricity Using Coal for Electricity
Coal fired electricity generation plant Steam Turns a Turbine which turns a Generator & produces Electricity
A light water Nuclear Reactor Fission Reaction Uranium-235 Contains 2 - 3 million times the energy of 1 g of coal.
Hydropower 95% Efficient Water Impoundment- Kinetic Energy of water turns a turbine that turns a generator that sends electricity to the powerhouse and the transmission line.
Electricity Activity - Static Balloon, Saran Wrap & Wool Sweater Get two pieces of Saran Wrap or a Balloon Rug the two pieces on the wool or Balloon on the wool sweater How does the saran wrap react with the wool sweater? Now hold the two pieces of saran wrap together. How do the two pieces of saran wrap react with each other? Why is there a difference in the way they react?
Video - Physics 12:00 minutes into video Electromagnetism 4:32
Magnetism Earth s Magnetic Field Magnetic North compass, fluid iron in the Earth core acts like a huge magnet. True North North Pole, compass will not work.
Activity - Magnetism Bar Magnet see magnetic field with metal file shavings Compasses
On-Line Activity pHet website: http://phet.colorado.edu/en/simulations/ category/new Physics Sound & Waves; Electricity, Magnets & Circuits
2 hours Credit At Home Activity Choose a form or Energy Ms. Lench How is your form of Energy used in everyday life? Give a specific example of it s use. Where is the source of this energy? Explain how the energy is used. What impact does it have on the environment? How can we make it more efficient?
