HESSI-AND-ROCKETRY

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					HESSI, TYPES OF WAVES,
   AND ROCKETRY
 Teaching Kids about HESSI and Waves with Rocketry
                          By
              Ariel Nachtigal AS101HM
                     Spring 2005
            What is HESSI?
• HESSI is a High Energy Solar
  Spectroscopic Imager.
• Used to image Solar Flares in the X-Ray
  through Gamma Ray.
• Creates images using rotating grids that
  allow for certain portions of the flare to be
  seen at one point or another
How to Make HESSI Relevant?
• HESSI can be used to explain about
  different types of Waves.
• HESSI was launched by a PEGASUS IV
  rockets, can be used to show how model
  rocketry is associated with the Space
  program.
• Building a model PEGASUS rocket and a
  model of HESSI.
 How To Show different Waves

         Experiment 1
Goals
• Using a Slinky how can we show that
  there are different waves?
• What other waves can been seen or
  heard in everyday life?
             What you need.
•   At least two willing students.
•   One metal Slinky
•   Enough room to stretch Slinky out
•   Paper and Pencils to record results
               The Slinky
                 Part 1
• Student #1 will hold the Slinky still while
  the Student #2 stretches it out.
• Student #2 will then “pluck” the slinky.
• Observer how the slinky moves and record
  what is seen.
               The Slinky
                 Part 2
• Choose two new students to take the
  slinky and have them stretch it out.
• Have one of those students take the slinky
  and shake it vigorously.
• Observe the waves it makes and record
  results.
    Conclusion for The Slinky
• Depending how the slinky was moved
  there were different types of Waves
  produced.
• This difference in the waves shows the
  different ways a wave can travel and be
  seen visually.
         Experiment #2

Goals

• Can Sound waves be seen?
• How do we prove that there are Sound
  waves?
             What you need.
•   A Whistle.
•   A Large Field.
•   A bucket of water.
•   A Tuning Fork
•   A teacher assistant would be helpful
 Sound Waves and Doppler Effect
            Part 1
• Have your students sit at a midpoint on the field
  and have them sit there (this is where you need
  the Assistant).
• Take the whistle and go to one end of the field.
• Blow the whistle and while blowing it run past
  the students.
• Have then note the Change in the sound as you
  pass. Also ask if they know of anything else that
  does this. (i.e. their own model rockets)
 Sound Waves and Doppler Effect
            Part 2
• Now that they have heard the sound
  waves and how they change its time to
  show them.
• Take a bucket and fill it with water.
• Take tuning fork and strike it against a
  hard surface.
• Ask the student if they can see the sound
  waves.
           Part 2 continued
• After they have seen the waves show
  them the wave.
• Again strike the tuning fork against a hard
  surface.
• Now place tuning fork in the water.
• Notice the result of the waves moving out
  and everywhere from the tuning fork
• Record Resluts
          After Experiments
• Ask the students if they know of anything
  else that emits waves.
• You can talk about how X-rays are used to
  image a human being for broken bones, or
  how micro waves are used to heat up
  food.
• You can also talk about how the visible
  light we can see is only a small fraction of
  the total waves lenghts.
                  Rockets
• Now that Waves have been described and show
  to the student we can move on to how HESSI
  work and how we can use it.
• These experiment are planned for after the
  student have had a chance to launch their first
  rocket.
• This is because they can associate the launch to
  the Doppler effect experiment, because their
  rockets have a Doppler shift when they launch.
                Pegasus IV
• PEGASUS IV is the rocket that launched HESSI
  into its low Earth orbit.
• Explain to the students that rockets can be used
  to carry payloads into space.
• Can show them how bigger model rockets can
  take small instruments up as well.
• You can build a paper cut out of the PEGASUS
  Rocket that can be found at
• http://www.orbital.com/spacelaunch/pegasus/
    Showing How HESSI IMAGE
          The finger Grid
• The Way HESSI uses grids to capture the
  solar flares are similar to how our fingers
  work.
• Have students take one of their hands and
  hold it with their finger spread out and
  pointing up.
• Take other hand and have them pointing
  to the left an d have them over lap hands
           The Finger Grid
• Have them look through the space
  between their fingers and have them tell
  you what they see.
• Then have them rotate both sets of fingers
  and again have them tell you what they
  see.
• Each time they will only see a portion of
  what they are looking at. Just like HESSI
           Showing HESSI
• If you have access to a computer lab or a
  classroom computer you can go to the
  HESSI web site and show them what
  HESSI looks like.
• http://hesperia.gsfc.nasa.gov/hessi
• At this web site you can see how HESSI
  images Solar Flares just like they imaged
  their fellow students with their fingers.
           Showing HESSI
• To connect it to the sound waves you can
  hear how HESSI gets it images if you go
  to the Listen to HESSI link
• At this website you can download a model
  of HESSI that can be built by the class or
  each individual student depending on how
  much time you have
• http://hesperia.gsfc.nasa.gov/hessi/outrea
  ch.htm
                 Closing
• With these series of experiments you can
  explore what the different wave types are,
  as well as show the students some of
  them.
• You can associate the model rocket work
  that they are doing can be related to
  various space programs that are currently
  going on.

				
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