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Energy Basics

Learn about energy, its forms, and how it can be converted from one form to another. Explore the concepts of potential and kinetic energy, as well as forms such as chemical, electrical, mechanical, radiant, thermal, elastic, and nuclear energy.

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Energy Basics

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  1. Energy Basics

  2. Energy • The ability to do work or cause change • Either potential or kinetic

  3. Potential Energy • Energy that is stored

  4. Kinetic Energy • The energy of motion

  5. Forms of Energy • Energy can be found in many forms • Can be converted from one form or another • Conversion can be both man made and natural process • Forms include chemical, thermal, elastic, radiant, mechanical and nuclear.

  6. Chemical Energy • Stored in chemical bonds holding the atoms of compounds together • Food, wood, batteries, fossil fuels

  7. Electrical Energy • Energy of moving electrons • Invisible but most useful form • When the electrons are separated from positive charges and then forced along a closed path in a conduction material ex: copper

  8. Mechanical Energy • Most familiar-involved with moving objects; atoms are moving and pushing each other • Sound is another example-occurs when atoms in a media vibrate in a direction outward from the sound source.

  9. Radiant or Light Energy • Produced when atoms absorb energy from an outside source and release energy as electromagnetic radiation • Most are invisible except for visible light • UV rays, X-rays, radio waves

  10. Thermal Energy • A special form of kinetic energy • Energy of moving or vibrating molecules • The faster the molecules vibrate the hotter they become

  11. Elastic Energy • Energy stored in a solid object when it is either stretched or compressed. • A stretched rubber band, compressed spring or jack-in-the-box

  12. Nuclear Energy • Energy stored in the nuclei of atoms • Released by fission, the splitting of nuclei of heavy atoms • Released by fusion-the combining of nuclei of light atoms • The sun is an example-fusion fuels it

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