Science Starter: February 27, 2012 <ul><li>You will turn this in for a grade. </li></ul><ul><li>Write a paragraph (at leas...
Electromagnetic Waves  have unique traits
What is an Electromagnetic Wave <ul><li>http://www.classzone.com/books/ml_science_share/vis_sim/wslm05_pg74_emwave/wslm05_...
Electromagnetic Waves <ul><li>Electromagnetic Wave-  a disturbance that transfers energy through a field </li></ul><ul><ul...
Facts about EM Waves <ul><li>Most EM waves are invisible, but can be perceived (examples: light and heat) </li></ul>
How EM Waves Form <ul><li>EM waves are made up of two transverse waves- one electrical, one magnetic  </li></ul><ul><li>Bo...
Sources of EM Waves <ul><li>Most of the EM waves in Earth’s environment come from the Sun. </li></ul><ul><li>Technology is...
Transfer of Energy <ul><li>Radiation - the transfer of energy in the form of EM waves </li></ul><ul><li>EM waves  DO NOT  ...
Speed of EM Waves in a Vacuum <ul><li>In a vacuum, EM waves travel at a constant speed – 186,000 mi/s </li></ul><ul><li>In...
Transferring Energy <ul><li>How does a microwaves oven work? </li></ul>http:// www.youtube.com/watch?v =FGdwEPEU61U
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Electromagnetic waves

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Electromagnetic waves

  1. 1. Science Starter: February 27, 2012 <ul><li>You will turn this in for a grade. </li></ul><ul><li>Write a paragraph (at least 5 sentences) that starts with “Science is…..” </li></ul>
  2. 2. Electromagnetic Waves have unique traits
  3. 3. What is an Electromagnetic Wave <ul><li>http://www.classzone.com/books/ml_science_share/vis_sim/wslm05_pg74_emwave/wslm05_pg74_emwave.html </li></ul>
  4. 4. Electromagnetic Waves <ul><li>Electromagnetic Wave- a disturbance that transfers energy through a field </li></ul><ul><ul><li>Also called EM waves </li></ul></ul>
  5. 5. Facts about EM Waves <ul><li>Most EM waves are invisible, but can be perceived (examples: light and heat) </li></ul>
  6. 6. How EM Waves Form <ul><li>EM waves are made up of two transverse waves- one electrical, one magnetic </li></ul><ul><li>Both electrical and magnetic fields MUST be present for an EM wave to form </li></ul>
  7. 7. Sources of EM Waves <ul><li>Most of the EM waves in Earth’s environment come from the Sun. </li></ul><ul><li>Technology is also a source of EM waves </li></ul>
  8. 8. Transfer of Energy <ul><li>Radiation - the transfer of energy in the form of EM waves </li></ul><ul><li>EM waves DO NOT require a medium to travel through </li></ul><ul><ul><li>EM waves CAN travel in a vacuum </li></ul></ul>
  9. 9. Speed of EM Waves in a Vacuum <ul><li>In a vacuum, EM waves travel at a constant speed – 186,000 mi/s </li></ul><ul><li>In one second an EM wave can travel more than 7 times around the Earth </li></ul><ul><li>The constant speed is known as the speed of light </li></ul>
  10. 10. Transferring Energy <ul><li>How does a microwaves oven work? </li></ul>http:// www.youtube.com/watch?v =FGdwEPEU61U
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