Earth/Space/Physics Kristy Halteman.
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1 Earth/Space/Physics Kristy Halteman
2 A. Properties ,000 times more massive than the Earth.
3
4 Properties cont. 2. It contains about 99% of all the mass in the solar system. 3. It is 4.5 billion years old 4. It s gravity controls the motion of planets.
5 Properties cont. 4. Made of mostly H.
6 Properties cont. 5. Is in the main-sequence stage so H He fusion is taking place.
7 B. The Sun s Inner Layers
8 1.Core a. Center layer of the sun. b. Where all the sun s heat & light is made &h=348&w=362&sz=19&hl=fr&start=14&tbnid=6f0WtAjTHEnq0M:&tbnh=116&tbnw=12 1&prev=/images%3Fq%3Dlayers%2Bof%2Bthe%2Bsun%26gbv%3D2%26svnum%3D10%26hl%3D fr
9 2. Radiative Zone a. Heat & light move from the core into this layer start=14&tbnid=6f0wtajthenq0m:&tbnh=116&tbnw=121&prev=/images%3fq%3dlayers%2bof%2bthe%2bsun%26gbv%3d2%26svnum%3d1 0%26hl%3Dfr
10 3. Convection Zone a. In this layer, gases move like boiling water. b. This moves them from the inner parts of the sun to the outer part we can see. media.nasaexplores.com/lessons/05-102/images/sun.jpg&imgrefurl= asaexplores.com/show_k4_student_st.php% 3Fid%3D &h=348&w=362&sz =19&hl=fr&start=14&tbnid=6f0WtAjTHEnq0 M:&tbnh=116&tbnw=121&prev=/images%3F q%3dlayers%2bof%2bthe%2bsun%26gbv %3D2%26svnum%3D10%26hl%3Dfr
11 C. The Sun s Atmosphere
12 1. Photosphere a. The visible surface of the sun where most of its visible light comes from b. The lowest layer c. Avg. temp = 5800 K
13 2. Chromosphere a. Temp 30,000 K b. Visible only during a solar eclipse when the photosphere is blocked. c. Appears red nterior/solar_furnace.html
14 3. Corona a. Outermost layer b. Extends several million km from the top of the chromosphere. c. Temp 1-2 million K d. Low density e. Can only be seen when the photosphere is blocked.
15 un.html
16 Radiative Zone Core Corona Convection Zone Photosphere &h=348&w=362&sz=19&hl=fr&start=14&tbnid=6f0WtAjTHEnq0M:&tbnh=116&tbnw=12 1&prev=/images%3Fq%3Dlayers%2Bof%2Bthe%2Bsun%26gbv%3D2%26svnum%3D10%26hl%3D fr Chromosphere
17 D. Solar Activity
18 1. Sunspotsa. Dark spots on the surface of the photosphere. b. Are located in regions where the sun s magnetic fields poke through the photosphere. c. Last 2 months
19 d. Sunspots occur in pairs es/sun.htm
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21 2. Solar Activity Cycle a. Number of sun spots change, on average, every 11.2 years
22 3. Solar Flares- Violent eruptions of particles & radiation from the corona and chromosphere ar_flare/157/index.html
23 4. Solar Prominence a. Large bright feature extending outward from the sun's surface, often in a loop b. They extend from the photosphere to the corona
24 Sun Video with quiz after
25 E. Aurora borealis 1. Called the northern lights, because only visible in the North sky from the Northern hemisphere. (Aurora australis in southern hemisphere) 2. Most often occurs from Sept-Oct and from March-April. 3. Caused by solar wind colliding with atoms in the upper atmosphere. Energy from the collision is released in the form of light. 4. Most colors are green & red from O. Some red & blue are caused by collision with N.
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