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UNIT D CH 3 – PLANETS NAME _______________________________ VOCABULARY Lesson 1: 1. satellite – _______________________________________________ _______________________________________________ 2. orbit -_______________________________________________ _______________________________________________ 3. phases -_______________________________________________ _______________________________________________ 4. revolution -_______________________________________________ _______________________________________________ 5. axis -_______________________________________________ _______________________________________________ 6. rotation – _______________________________________________ _______________________________________________ Lesson 2: 1. solar system -_______________________________________________ _______________________________________________ 2. star -_______________________________________________ _______________________________________________ 3. planet – _______________________________________________ _______________________________________________ 4. asteroid – _______________________________________________ _______________________________________________ 5. comet-_______________________________________________ _______________________________________________ Lesson 3: 1. inner planets-_______________________________________________ _______________________________________________ 2. outer planets – _______________________________________________ _______________________________________________ 3. gas giants – _______________________________________________ _______________________________________________ Lesson 4 1. telescope – _______________________________________________ _______________________________________________ 2. space probe -_______________________________________________ _______________________________________________ PEOPLE IN SCIENCE CLYDE TOMBAUGH 1. 2. 3. 4. 5. Lesson 1 Review Questions NAME ________________________________ 1. Why would you classify the moon and Earth as satellites? 2. What are two ways that Earth moves? 3. What causes the seasons? **CRITICAL THINKING** How would day and night differ if Earth’s axis were not tilted? TEST PREP -- What season would a town in the southern hemisphere have during January? A. winter B. spring C. summer D. fall Lesson 2 Review Questions NAME _________________________________ 1. What is the sun? 2. In what way are the planets, comets, and asteroids alike? 3. How does a planet’s distance from the sun affect its orbit speet? **CRITICAL THINKING** What might happen if the number of sunspots got much larger? TEST PREP -- What provides most of the heat and light to our solar system? A. the comet Hale-Bopp B. asteroids C. the sun D. Jupiter Lesson 3 Review Questions NAME ________________________________ 1. Name the inner planets, starting with the planet closest to the sun. 2. What can be thought of as the dividing line between the inner planets and the outer planets? 3. Which planets have no moons? **CRITICAL THINING** Compare and contrast VENUS and EARTH. TEST PREP -- The outer planet that is NOT a gas giant is ____ A. Jupiter B. Saturn C. Neptune D. Pluto Lesson 4 Review Questions NAME _____________________________________ 1. What are two types of telescopes? 2. What limits the things an Earth-based aptical telescope can “see”? 3. What kind of work do astronauts on a crewed space mission do? **CRITICAL THINKING** What are the advantages of sending crewed missions instead of probes into space? The disadvantages? TEST PREP -- An instrument that uses lenses to magnify distant objects is a _____. A. radio telescope B. refracting telescope C. reflecting telescope D. space station
