BOBO dHHHHHH!DH!@   Z- Rilla ChaneyjFLOM!`kxHHR[g(HH(d'h l@/b#gDH/H/!bS0wL   Q.OyDSETr V VYI!!T!L!P!l!1}K$*"H ) * + K L ~   : ; n   % & ] ^      ] ^ {    p       K     / Z |      b 4 5 g  h i j I J R    *   9 o     ] }       W  K      { |  ~     5         i          J      2!X!\!`M!d e!h How Do We Know About the Sun and Stars? How do we know about the sun? Has anyone ever seen a picture taken on the moon? What color is the moon? What color is the sky? Is it dark in space? If light comes from the sun, how can it be dark in space? (Darken the room and shine a laser on a distant wall.) Where does the light originate? How do you know? (Use a spray bottle to make water droplets along the line of light from the laser.) Does anyone have any idea why we dont see the light until it hits the wall or water  droplets? When you see photos from space where do you see light? What sort of light detectors do we have in our body? What can we learn from the color of the sun or a star? a. How hot is the sun (a star)? (Using a clear light bulb on a rheostat, show how color changes with temp and amount of light emitted.) b. What color is sunlight? (Remember from 7th grade, white light is made of all colors of light. Blow on rainbow pinwheel to show it turns to white light when moving fast enough.) (Use a defraction grating to break light from white light into different colors. Look at light from different colored bulbs or filters and see what is present.) c. Even if the light from the sun appears to be white, could it contain light of different colors? Could we compare the colors of light coming from the sun with colors seen on earth and learn more about the sun? d. What elements are present in the sun (star)? (Put a drop of liquid on a platinum inoculation loop (or use a paper clip, it may have some interference, but it will work) A nice series of colors can be produced by using solutions of sodium chloride, barium chloride, strontium chloride, calcium chloride, iron chloride, copper chloride, and lithium chloride. Use a different loop for each liquid. ) e. How can we tell which elements are on the sun (star)? (Video and worksheet on Fraunhofer lines.) f. How can we tell if a star is moving toward or away from us? (Doppler shift device to allow toM hear change in pitch. Doppler shift song from AstroCapella CD. Fraunhofer worksheet activity.) Do you think any kind of energy except visible light comes from the sun? Do we have detectors in our body for any other kinds of energy? Can you think of any forms of energy for which our body does not have detectors?* Can this form of energy pass through space? How can we know? (Take a set of uv beads and place them on the table. Note their characteristics. Now hold the beads in the palm of your hand with your fingers closed firmly over them so no light can reach the beads. Keep your hand closed until you are outside. We will all open our hands at the same time and see if we can detect andy differences. Cover the beads with your hands again as you go inside.) Was there something outside that is not inside? How could we find out what is different? If we could find something else which would cause them to change colors indoors might this be the same thing that is outside? (Place the beads under the light of a UV lamp - a black light bulb does not work.) Are there detectors that can be attached to telescopes that will let us see different kinds of energy from the sun or stars? (Astronomical Society of the Pacific slide series or Multi Wavelength Milky Way from NASA.) Are there kinds of energy that might come from the sun and stars that we dont detect from earth? If so how could we learn that they are produced? *I am still trying to find a way to divide infrared with a prism to show it is separate from light. Any suggestions?ZNDSET2H !pM6*MDSET2HpM !!tM6*MDSUM% Rilla ChaneyHDNISTYL ^TJSTYL!!!!!!!!!u   k        f       pHASH $ ..  .  . .7.. .. . . L:Qhjazo}BodN  CHAR!   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