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-Groups of 3. -Send one person up for a board, marker, and eraser. -Get to a table with your group, no study guides allowed!!! After the Voyager Probe has explored the planets of our solar system, astronomers have come to the conclusion that Saturn’s rings are made out of what? (3 possible points) Ice, dust, and rock Which planet was first discovered to have a rotational period longer then its revolutionary period and is thought to be from an Impact. Venus Which moon is most exciting due to its nitrogen rich atmosphere, similar to a young Earth? Titan Why might Venus be of interest for humans to study? A. The atmosphere in the same in terms of composition and temperature. B. It’s similar to Earth in terms of size and composition. C. We have found remnants of microbacterial life on Venus. Ans. B What is the difference between orbit and revolution? Orbit is the path the planets take… Period of Revolution is the time it takes to go around the sun. Which planet has virtually no atmosphere? Mercury a. Dwarf planet with 2 moons b. Dwarf planet that is basically an extremely large, round asteroid. a. Haumea b. Ceres What best justifies scientists’ high levels of interest in Jupiter’s moon Io? A. There could be microscopic life in the oceans under its icy surface. B. Its atmosphere is similar to that of Earth with high amounts of nitrogen C. It is covered in active volcanoes, which could be from plate tectonics, which could mean future H2O Ans. C What is thought to have happened to Uranus to give it a 98 degree tilt? • It is thought to have had a collision with another planet Give an explanation as to why Neptune is occasionally further away from the sun then Pluto.(2 pts.) Pluto’s orbit is more eccentric and tilted Why does Uranus have seasons that last so long? **over 20 years** -Since Uranus has a 98° tilt, the sun focuses on one side for a long time. If Venus were to suddenly cool, why would the development of advanced seasons be impossible? Venus’s tilt is 2.6 degrees. The sunlight would hit directly on the equator all year. Although intelligent life may not exist in our solar system, microscopic ocean life may exist in the oceans on: Europa What is synchronous rotation and revolution? • When something rotates and revolved at the same pace. One side will always face what its revolving around. Besides our moon, which is the only other moon to experience synchronous rotation and revolution? Neptune's moon-Triton Final Jeopardy: How many points do you want to wager? Two factors that influence the force of gravity of an object are mass and distance. Knowing this, justify as to how Venus and Uranus have the same gravitation attraction (.91 of Earth). Venus- Higher mass and lower volume. Uranus- Lower mass and higher volume.