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Energy Video: Types, Transfer, and Conservation

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Presentation Transcript

  1. VIDEO DO NOW: Please write in your notebooks your opinion of the video and any questions you may have about the video. We will revisit this video / questions again tomorrow. TO DO today: Do Now Q (save for later) Activity Review HW

  2. INTRODUCTION • Walk around the room and examine the objects you see…. • Answer the questions on the page… WHAT IS THE CONNECTION BETWEEN THESE OBJECTS (keep it to your group when you figure it out…) • WE WILL REVIEW AT THE END OF CLASS

  3. What is the CONNECTION between all of those things? • TODAY you examined some objects and we determined that the connection was…… • ENERGY

  4. ENERGY VIDEO

  5. What is Energy? • The ability to do work • The ability to cause motion or change • WHERE DOES MOST OF THE ENERGY on Earth COME FROM?

  6. Photosynthesis or CHEMOSYNTHESIS • Chemosynthesis is making food by chemical energy instead of sunlight energy. • Used by EXTREMOPHILES vid • Like…. • Explained • Hydrothermal vents

  7. How is energy TRANSFERED? • What is meant by conservation of energy? • How is energy transferred between objects or systems?

  8. The Law of Conservation of Energy • states that energy can neither be created (produced) nor destroyed by itself. • It can only be transformed/transferred. Newton’s Laws • Newton’s Cradle • Professor risks his life for SCIENCE

  9. Types of Energy • KINETIC – energy in progress, a body in motion • Hover board

  10. Types of Energy • Potential - The potential to do work, or energy stored not being used yet. • Coal

  11. COAL • FOSSIL FUELS…. VIDEO • Fossil Fuels : Carbon based fuel made of ancient plant and animal remains. • Take MILLIONS of years to form • Natural Gas, Coal, Petroleum (oil) • SWPA was a SWAMP millions of years ago (~350 mya, Carboniferous Period) • COAL formed! • BITUMOUS COAL

  12. Types of Energy • Mechanical – Sum of kinetic and potential energies.

  13. VIDEO

  14. Types of Energy • Thermal – Energy required to change the temperature of something > Heat energy > transfers from warmer objects to cooler ones. video

  15. Types of Energy • Chemical - Energy by chemical reactions • Video

  16. Types of Energy • Electrical – Energy by electricity video2

  17. Types of Energy • Magnetic - potential energy by magnets or magnetic field • video

  18. Types of Energy • Radiant – electromagnetic radiation energy, including light • Light is wavelengths and differed wavelengths produce different colors. • White Light is a combination of all other colors • Video • 1

  19. ALBEDO • Radiant light that is not absorbed by the Earth but is reflected back to space.

  20. Types of Energy • Elastic – potential mechanical energy stored required to distort volume or shape. • Video • 1 • 2

  21. Types of Energy • Gravitational – potential energy due to the force of gravity caused by the attraction of all other masses to the mass of the earth • The potential to fall back to Earth • Video • 1

  22. Types of Energy • Sound – sound is produced by vibrations, the effect of mechanical energy propelled by oscillations (waves). • Video • Music

  23. Types of Energy • Ionization – the minimum amount of energy required to remove an electron from an atom. • Video

  24. Types of Energy • Nuclear energy - is the energy required to split a nucleus of an atom into its component parts • VideoThree Mile Island

  25. Nuclear energy

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