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Download Section 3: Evolution of Stars pages 114-119
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Ch. 1 Exploring Space Outline (Book objectives and Figures) Section 1: Radiation from Space pages 8-13 Obj: Explain the electromagnetic spectrum The arrangement of electromagnetic radiation emitted from a star. Large to small wavelengths: Radio, Microwave, Infrared, Visible, Ultraviolet, x-ray, Gamma rays Obj: Identify the difference between refracting and reflecting telescopes Reflecting telescopes use MIRRIORS! Ch. 4 Stars Outline (Book objectives and Figures) Section 1: Stars pages 104-107 Obj: Explain why some constellations are only visible during certain season Because the earth is in constant motion. The earth orbits the sun so during certain seasons the earth is different locations around the sun so there are different stars visible in the night time sky. Obj: Distinguish between absolute and apparent magnitude Absolute magnitude is the TRUE brightness of a star compared to other stars and apparent magnitude is what you see with your own eyes from earth. Section 2: The Sun pages 109-112 Obj: Explain that the Sun is the closet star to Earth It is the center of the solar system, light from the sun reaches earth in about 8 min. and light from other stars takes many of years! Obj: Describe the structure of the Sun Copy figure 6 p.109 into your notes (Sun diagram) Photosphere- lowest layer and the layer that gives off light Chromospheres- middle layer above the photosphere Corona- outermost layer extending millions of km out into space Obj: Describe sunspots, prominences, and solar flares Sunspots- darker, somewhat cooler areas on the suns surface Prominences- huge arching columns of gas Solar flares- bright bursts of light, gases and energy Section 3: Evolution of Stars pages 114-119 Obj: Describe how stars are classified Stars are classified by their size, temperature, color and brightness Obj: Compare the sun to other types of stars on the H-R diagram Our sun is average in terms of size, temperature, brightness, and color. It is a main sequence star. Describe how stars evolve See figure 13 p.117 Low mass stars- nebula, low-mass star, main sequence, Red giant, White dwarf High mass stars- nebula, high-mass star, main sequence, Red supergiant, supernova, Neutron or Black hole Section 4: Galaxies and the Universe pages 120-125 Obj: Describe the sun’s position in the Milky Way galaxy On the outer edge of the galaxy on a spiral arm Section 3 Evolution of Stars (PowerPoint Notes) Name: ______________________________________ Stars A massive sphere of plasma ___________________________________ that forms out of a protostar. A star is born when the contracting gas and dust become so hot that nuclear fusion starts. Are classified by: ____________________________________________________ Protostar __________________ pulls huge nebulas of hydrogen gas and dust into a single spinning cloud. As the particles crash into each other, the matter heats up….about 15 million degrees. A star comes to life when ________________ begins. H-R diagram: A graph relating the _____________________________________________________________. Main sequence: 90% of all stars As temperature increase so does the _____________________________. Describe how stars evolve See figure 13 p.117 Copy this diagram on the backside of this sheet or in your notes! _________________- nebula, low-mass star, main sequence, Red giant, White dwarf _________________- nebula, high-mass star, main sequence, Red supergiant, supernova, Neutron or Black hole Section 3 Evolution of Stars (PowerPoint Notes) Name: ______________________________________ Stars A massive sphere of plasma ___________________________________ that forms out of a protostar. A star is born when the contracting gas and dust become so hot that nuclear fusion starts. Are classified by: ____________________________________________________ Protostar __________________ pulls huge nebulas of hydrogen gas and dust into a single spinning cloud. As the particles crash into each other, the matter heats up….about 15 million degrees. A star comes to life when ________________ begins. H-R diagram: A graph relating the _____________________________________________________________. Main sequence: 90% of all stars As temperature increase so does the _____________________________. Describe how stars evolve See figure 13 p.117 Copy this diagram on the backside of this sheet or in your notes! _________________- nebula, low-mass star, main sequence, Red giant, White dwarf _________________- nebula, high-mass star, main sequence, Red supergiant, supernova, Neutron or Black hole