THE SUN It’s big! It’s bright! It’s necessary! http://www.nasa.gov/images/content/665490main_20120705_114522orig_full.jpg (C) Copyright 2014 - all rights reserved www.cpalms.org 3-2-1 THE SUN In your notebook write the following: Three things you already know about the Sun Two things you find interesting about the Sun One question you still have about the Sun (C) Copyright 2014 - all rights reserved www.cpalms.org 3-2-1 POSSIBLE ANSWERS The Sun is a star. It is a large ball of gas. The provides energy for us on earth. The Sun is a yellow star. It is a main sequence star. It is really hot. It produces energy through nuclear fusion Question- Why does it have temperatures? How is the Sun similar to Earth? (C) Copyright 2014 - all rights reserved www.cpalms.org NASA SUN SONG https://c1.staticflickr.com/9/8249/8515999093_0b07ef52ed_z.jpg (C) Copyright 2014 - all rights reserved www.cpalms.org REVIEW HEAT TRANSFER Radiation-energy transfer as particles or waves Hand Conduction- energy transfer by touching Clap wiggles like a snake or wave up and down hands together Convection- energy transfer by circulation or movement in a liquid or gas Hand moves in a circular path (C) Copyright 2014 - all rights reserved www.cpalms.org STRUCTURE OF THE SUN (LAYERS) http://upload.wikimedia.org/wikipedia/commons/7/76/Sun_diagram.svg (C) Copyright 2014 - all rights reserved www.cpalms.org 1. Core 2. Radiative zone 3. Convective zone 4. Photosphere 5. Chromosphere 6. Corona 7. Sunspot 8. Granules 9. Prominence STRUCTURE OF THE SUN (LAYERS) Core- center of the Sun 15,000,000º C Nuclear fusion occurs here What is nuclear fusion again? http://openclipart.org/image/30 0px/svg_to_png/40357/appleco re.png http://upload.wikimedia.org/ wikipedia/commons/4/4d/N uclear_fusion.gif (C) Copyright 2014 - all rights reserved www.cpalms.org STRUCTURE OF THE SUN (LAYERS) Radiative zone- layer in which energy is radiated away from the core Heat moves out from the center Convective zone http://upload.wikimedia.org/wikipedia/commons/3/3 8/Heating-Radiator.svg (C) Copyright 2014 - all rights reserved www.cpalms.org Core STRUCTURE OF THE SUN (LAYERS) Convective zone-Layer of the Sun in which energy travels by convection Energy flows from radiative zone to the photosphere http://upload.wikimedia.org/wikipedia/commons/0/08/Convection.gif (C) Copyright 2014 - all rights reserved www.cpalms.org (C) Copyright 2014 - all rights reserved www.cpalms.org STRUCTURE OF THE SUN (LAYERS) Photosphere (photo means light)- visible surface of the Sun Average temperature 5,527º C Layer in which energy escapes to space http://upload.wikimedia .org/wikipedia/common s/3/37/Sun_projection _with_spottingscope.jpg STRUCTURE OF THE SUN (LAYERS) Chromosphere-The middle layer of the Sun’s atmosphere Temperatures reach 6,000º C (C) Copyright 2014 - all rights reserved www.cpalms.org http://upload.wikimedia.org/wikipedia/commons/d/d4/Sun_poster.svg (C) Copyright 2014 - all rights reserved www.cpalms.org STRUCTURE OF THE SUN (LAYERS) Corona- the outermost layer of the Sun Temperature reaches 2,000,000º C http://upload.wikimedia. org/wikipedia/commons /0/06/469368main_Su n_layers_unlabeled_full.j pg STOP AND PROCESS Take your notes and draw a picture of the Sun. Include each of the layers. Leave space to add solar activity (C) Copyright 2014 - all rights reserved www.cpalms.org REVIEW ROTATION VERSUS REVOLUTION Does the Sun rotate or revolve? Let’s act it out! Stand in one spot and spin in a circle. Is this rotation or revolution? Now walk around the classroom in a circle. Is this rotation or revolution? (C) Copyright 2014 - all rights reserved www.cpalms.org (C) Copyright 2014 - all rights reserved www.cpalms.org SOLAR ACTIVITY Sunspots- dark areas on the Sun’s surface They are 1,500ºC Last days to months Activity occurs on an 11 year cycle Caused by Sun’s magnet field http://upload.wikimedia.or g/wikipedia/commons/thu mb/2/28/Sunspot_Numbe rs.png/800pxSunspot_Numbers.png SOLAR ACTIVITY Solar Flares- an explosion of energy from the photosphere Can extend as far as Corona Watch quick video http://www.youtube.com/watch?v=JyLTMjVFCw (C) Copyright 2014 - all rights reserved www.cpalms.org http://xdem.free.fr/uploaded_images/TRACE_SolarFlare-742697.jpg SOLAR ACTIVITY Prominences- Huge loops of cool gas that go out from the photosphere http://i.ytimg.com/vi/J1rs7CTlOP8/0.jpg (C) Copyright 2014 - all rights reserved www.cpalms.org LET’S ACT IT OUT Solar FlareMake a Y with your arms https://openclipart.org/image/300px/svg_to_png/191 801/Happy_Boy_.png Solar Prominence- Make an O with your arms above your head. (C) Copyright 2014 - all rights reserved www.cpalms.org FINISHING YOUR DIAGRAM Add examples of the solar activities to your model( Sunspots, solar flares, prominences) Get with your group and compare your diagrams. Fix them until they are all perfect. (C) Copyright 2014 - all rights reserved www.cpalms.org (C) Copyright 2014 - all rights reserved www.cpalms.org NAME THAT FEATURE