Astronomy: Discussion Questions

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Name: Date: Period: 1. are natural or artificial bodies that revolve around more massive bodies such as planets. (Satellites or Comets) 2. Most lunar craters are the result of . (volcanoes or impacts) 3. The time it takes for Earth to around the sun is 1 year. (rotate or revolve) 4. Which of the following distances is roughly the distance between the sun and the Earth? a. 1 AU b. 149,600,000 km c. 8.3 light-minutes d. all of the above 5. Distances between stars are usually measured in a. light-minutes b. astronomical units c. light-days d. light-years 6. Einstein developed an equation that changed ideas about the sun’s energy source by describing the relationship between a. mass and energy b. gravity…show more content…
The is a region of the sun where hot and cooler gases circulate in convection currents. a. chromoshpere b. photosphere c. corona d. convective zone 11. The motion of a planet traveling around the sun is called a. an orbit b. a revolution c. a rotation d. circling 12. The path that a planet takes while traveling around the sun is called a. an orbit b. a revolution c. a rotation d. circling 13. The spinning of a planet on its axis is called a. an orbit b. a revolution c. a rotation d. circling 14. Which of the following statements is TRUE? a. All planets revolve around the sun in a clockwise direction. b. Not all planets rotate in the same direction. c. Revolution, not rotation, causes Earth’s days and nights. d. none of the above 15. Which of the following planets is NOT a gas giant? a. Earth b. Jupiter c. Saturn d. Uranus 16. The sun gets its energy from a. burning fuel b. nuclear fusion c. shrinking due to gravity d. convection 17. The number of on any planet can be used to estimate how old the surface is. a. sunspots b. craters c. solar flares d. auroras 18. is only slightly smaller, less massive, and less dense than Earth is. a. Mercury b. Mars c. Venus d.

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