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Chapter 23: The Solar System Review Terrestrial Jovian Which Planets? Meaning Location in the solar system Relative Temperatures Relative Size Density Substances Atmosphere Rings? 1. Describe the most accepted theory of how the solar system formed: a. Specifically, how did the sun form? b. How did the planets form? 2. What percentage of the mass of our solar system is concentrated in the sun? _________ 3. Why is it difficult to make scaled models for the solar system/space? 4. Why have scientists looked for evidence of liquid water on Mars? 5. What is a “shooting star”?. 6. What have scientists used to estimate the age of the solar system? Name:__________________________________________ Block:__________ Definitions: Nebula:______________________________________________________________________ Planetesimal:__________________________________________________________________ Escape Velocity:_______________________________________________________________ Dwarf Planet: _________________________________________________________________ Scaled Models: ________________________________________________________________ Asteroid: _____________________________________________________________________ Where are they found?____________________________________________________ Comet: ______________________________________________________________________ Where do they originate?__________________________________________________ Parts:___________________________________________________________________ Meteoroid: ___________________________________________________________________ Meteor: ______________________________________________________________________ Meteorite: ___________________________________________________________________ 1 5 2 3 Across 1. The kind of planet that Earth and Mars are. 4 6 7 8 9. Extensive dust storms change the shades of this red planet. 9 10 10. A hole in the ground caused by a meteor hitting a planet. 11 12 13 13. An outer layer of gases on a planet. 14 15. Planet between Saturn and Neptune. 15 17 6. Star at the center of our solar system. 16 17. Another name for the Jovian planets 18 19 20 20. A rock that burns up in Earth's atmosphere. 21. This planet rotates the fastest of all the planets and a notable feature is its “Great Red Spot.” 21 Down 2. Something that all Jovian planets have. 3. The only planet known to have life. 12. The atmosphere of this planet has created a runaway greenhouse effect causing temperatures up to 475°C 4. An instrument that scientists use to observe planets. 14. The path that a planet takes around the sun. 5. Our galaxy. 16. One of many 'rocks' in a belt between Mars and Jupiter. 6. Our sun is this. 17. The force that holds planets in their orbits. 7. This tiny member of the solar system has 5 18. Planet famous for its rings. moons. Its largest, Charon, is over ½ its size. 19. An icy rock that has bright tail when it comes 8. Smallest planet in the solar system. close to the sun. 11. Planet named after the sea god. 20. Earth's companion. Solar System Matchup Place the correct clue number in the box below the corresponding picture. Sun Jupiter Asteroids Mercury Venus Saturn Uranus Comet Earth Mars Neptune Pluto Meteoroid Clues: 1. This planet is home to "Olympus Mons," the largest volcano found in the solar system. 2. Small rocky bodies mostly found between the orbits of Mars and Jupiter 3. This planet gets very hot due to a very thin atmosphere, and it has similar features to Earth’s moon. 4. The third planet from the sun and the fifth largest planet. 5. A small particle that travels through space that is given modified names if it reaches Earth’s atmosphere or Earth’s surface. 6. This planet has a very dense atmosphere and is similar to Earth in size & mass. 7. This is one of nearly twelve dwarf planets in our solar system. 8. This makes up about 99 percent of the solar system's mass. 9. This planet is covered by a giant ocean of liquid hydrogen. 10. This "Blue Planet” spins on a horizontal axis and has thin rings. 11. This is the windiest planet in our solar system & has a large storm called the “Great Dark Spot.” 12. This planet is so light that if there were a bathtub big enough, it would float in water. 13. A piece of rock & ice that forms a tail when it approaches and the ices vaporize