Transcript 2. - Quia
Science Notebook Layout GET WORKSHEETS FROM MY ASSIGNMENTS PAGE Mrs. Aguirre’s Webpage: http://www.quia.com/profiles/caguirre Solar System in One Page 3/28/12 Solar System Ruler 3-27-12 Read page 314 Answer Questions 1-3 and #8 on page 320 1. We can see the planets because… 0. Sun (0AU) 2. 1. Mercury (0.4 AU) My 2. Venus (0.7 AU) Very 3. Earth (1 AU) Educated 4. Mars (1.5 AU) Mother Asteroid Belt (2-4 AU) QuickTime™ and a TIFF (LZW) decompressor are needed to see this picture. 5. Jupiter (5 AU) Just 6. Saturn (9.5 AU) Sent 7. Uranus (19AU) Us 8. Neptune (30 AU) *. Pluto 3. A.U. 1AU 98 Noodles (39 AU) = Astronomical Unit = distance from the Sun to Earth ≈ 93 million miles or ≈ 150 million kilometers (149, 597, 870.691km) Solar Ruler with colored pictures Goes in the “pocket” 99 Science Notebook Layout GET WORKSHEETS FROM MY ASSIGNMENTS PAGE Mrs. Aguirre’s Webpage: http://www.quia.com/profiles/caguirre 100 Calculating Stellar Travel Times. How Long Would It Take to Travel to the Stars? 1. Would it be practical to travel to Sirius by any of the modes of travel listed on your chart? Why or why not? 2. The Voyager spacecraft were equipped with CDs that contain pictures and sounds depicting our world. One of the Voyager spacecraft is actually headed towards Sirius. If there is an intelligent civilization living on a planet near that star, how many years will it be until Voyager reaches it? 3. Do you think that it is possible that one of the Voyager spacecraft would ever be intercepted by a civilization around another star, even if such a civilization exists? 4 What travels at the speed of light that is capable of carrying information? 5. What would be the most practical way to get information from Earth to Sirius if we knew that a civilization existed around this star? 6. SETI scientists are listening to stars for messages from space. If a message had been received by a radio telescope here on Earth and had come from Sirius, how long ago would it have been sent? Why? NB 101: Bike Years/ Light Years 3/30/12 The Star SIRIUS is the brightest star in the northern hemisphere. It is pretty close to us- 8.6 light years away. How long would it take to get there? Mode of Travel Average Speed Distance Covered In 1 Year Time To Get To Sirius 1 2 3 4 5 6 7. SETI scientists are listening to stars that are within 100 light-years of Earth. Why do you think they have chosen this limited distance? 8. Proxima Centauri is the closest star to Earth at a distance of 4.3 light years away. If you stand outside on a clear night and see the light coming from it, how long ago did the light leave that star? Explain your answer. 101 Science Notebook Layout GET WORKSHEETS FROM MY ASSIGNMENTS PAGE Mrs. Aguirre’s Webpage: http://www.quia.com/profiles/caguirre 102 Star Groupings Star Chart and notes How are stars different from planets? • • • • • Grouping Stars A B C QuickTime™ and a TIFF (Uncompressed) decompressor are needed to see this picture. Discussion Questions: 1. Describe at least 3 patterns or groups of stars you see in the diagram. 2. What is the relationship between temperature and luminosity in the main sequence stars. 3. There are more stars that are ____ and ____ than those that are _____ and ____. 4. Explain why. 103 Science Notebook Layout GET WORKSHEETS FROM MY ASSIGNMENTS PAGE Mrs. Aguirre’s Webpage: http://www.quia.com/profiles/caguirre Questions: Star Types Reading 1. What are the stages in a low-mass star’s life? 2. What are the stages in a high-mass star’s life? 3. What determines a star’s type? 4. What makes the Sun an ideal star for life? 5. Is the Sun a low-mass or high-mass star? 6. Looking at the H-R diagram, what are the: hottest, dimmest stars? coolest, dimmest stars? brightest, hottest stars? brightest, coolest stars? Life Zones QuickTime™ and a TIFF (LZW) decompressor are needed to see this picture. Get article from my assignments web site: “Star Types Reading” 104 105 Science Notebook Layout GET WORKSHEETS FROM MY ASSIGNMENTS PAGE Mrs. Aguirre’s Webpage: http://www.quia.com/profiles/caguirre 94 95 Science Notebook Layout GET WORKSHEETS FROM MY ASSIGNMENTS PAGE Mrs. Aguirre’s Webpage: http://www.quia.com/profiles/caguirre 96 97 Science Notebook Layout GET WORKSHEETS FROM MY ASSIGNMENTS PAGE Mrs. Aguirre’s Webpage: http://www.quia.com/profiles/caguirre Page 101: Galaxies 1. What is a LIFE ZONE? The area of space around a star where liquid water can exist QuickTime™ and a TIFF (LZW) decompressor are needed to see this picture. Not too hot, not too cold- “Just right” 2. What is a LIFE SPAN? The time the star lasts QuickTime™ and a TIFF (LZW) decompressor are needed to see this picture. 3. Graph of LifeZones for each star. Red star: 4000 ˚ (100 billion years) QuickTime™ and a TIFF (LZW) decompressor are needed to see this picture. What is a galaxy? • • 4.The most likely star color to have a planet with life would be ____ because: a. b. Consider Life Span and Life Zone size 100 REFLECTION: •How is your classification the same as Hubble’s? Different? •Which of the two systems do you prefer? Why? 101 Science Notebook Layout GET WORKSHEETS FROM MY ASSIGNMENTS PAGE Mrs. Aguirre’s Webpage: http://www.quia.com/profiles/caguirre Galaxy Sort Questions page 363. 1. A ____ is bigger than a ____. 2. We live in the _____ galaxy. 3. There are about ___ stars in our galaxy. 4. Hubble discovered that….. 5. Four galaxy shapes: 6. Distances between galaxies are about… 102 Stars Review Hertzsprung-Russell Diagram (page 604 PH) 1. Which is brighter, Polaris or Rigel? 2. Which has a hotter surface, Polaris or Rigel? 3. What are the main sequence stars? 4. How do temperature and brightness relate for main sequence stars? 5. What kinds of stars are brightest? 6. What kind of stars are most massive? 7. How are giant and supergiant stars different from main sequence stars? 8. What will happen to Aldebaran? 9. What will happen to Betelegeuse? 10. What will happen to Rigel? 103 Science Notebook Layout GET WORKSHEETS FROM MY ASSIGNMENTS PAGE Mrs. Aguirre’s Webpage: http://www.quia.com/profiles/caguirre 102 103