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Name______________________________________________ Date ______________ Hour ________________ Directions: Read Ch. 20-2 Pages 706-711 Color the different parts of the Sun as indicated. Use the word bank to fill in the blanks in the picture and the descriptions below. A. _____________________ Halo visible during an eclipse, extends into space millions of miles B. _____________________ Greek word means “color sphere”, visible as a red glow in eclipse C. _____________________ Greek word means “light” , the layer we can see and gives off light D. _____________________ Where nuclear fusion of hydrogen into helium takes place in a star. E. _____________________ Where electromagnetic energy from a star moves through middle of a star F. _____________________ When sunspots erupt sending out magnetic energy into space G. _____________________ Interior layer where warm gases rise and gradually cool then sink. H. _____________________ Dark areas on the Sun that are areas of gas cooler then gases around them. I. Huge loops of gas linking different parts of sunspot regions. _____________________ The Sun makes up about _____% of the solar systems mass, exerting a ________________ force on all objects within it. Name______________________________________________ Date ______________ Hour ________________ Comets, Asteroids, and Meteors Ch. 20-5 Pages 730-733 Directions: Name and describe how each part of a comet forms. 1. _____________________________________________________ 2. ______________________________________________________ 3. ______________________________________________________ Building Vocabulary From the list below, choose the term that best completes each sentence. asteroid comet meteoroid dirty snowball asteroid belt Kuiper belt many meteorite coma meteor small Oort cloud Ceres irregular round 4. When a meteoroid enters Earth’s atmosphere, friction causes it to burn up and produce a streak of light called a(n) __________________________________________________ . 5. A chunk of ice and dust whose orbit is usually a long, narrow ellipse is a(n) __________________ . 6. If a meteoroid hits Earth’s surface, it is called a(n)____________________________. 7. A rocky object that revolves around the sun, but is too small to be considered a planet, is a(n) _____________________________________________ . 8. A chunk of rock or dust in space that usually comes from broken pieces of a comet or an asteroid is called a(n) _______________________________ . 9. The region of the solar system between the orbits of Mars and Jupiter is known as the _________________. 10. Clouds of gas and dust on a comet form a fuzzy outer layer called a _______________________. 11. A spherical region of comets on the outer edges surrounding the solar system is the ___________________ . 12. A doughnut-shaped region of comets that begins near Neptune’s orbit is the _______________________. 13. Comets are often called _____________________ because they are made of ice, dust and rocky particles. 14. Asteroids are not classified as planets or dwarf planets because there are too ________ that are too _______ with ___________________ shapes less than a kilometer in diameter. 15. The largest asteroid _____________ is ____________ in shape and was reclassified as a dwarf planet.