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Astro General Review

This article explores fundamental aspects of our Sun and the broader universe. It identifies fusion as the power source of the Sun and discusses its composition, primarily hydrogen. The distinction between terrestrial planets and other celestial bodies, such as asteroids and comets—which contain frozen gases—is also examined. Additionally, the article addresses critical factors influencing a star's lifecycle, focusing on mass. Furthermore, it touches on the Hertzsprung-Russell diagram for stars, the comparative sizes of the Solar System and the Milky Way, and the nature of galaxies.

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Astro General Review

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  1. Astro General Review

  2. What powers the Sun? • What gas is the Sun made mostly of? • T/F The four inner planets are terrestrial. • A Comet would differ from an Asteroid in that the Comet contains ________. ( frozen gases, fragments of all planets, rings, lunar soil) • What is the controlling factor in a star’s life? ( distance from the sun, density, mass, number of orbiting planets)

  3. 1. Fusion

  4. What powers the Sun? • What gas is the Sun made mostly of? • T/F The four inner planets are terrestrial. • A Comet would differ from an Asteroid in that the Comet contains ________. ( frozen gases, fragments of all planets, rings, lunar soil) • What is the controlling factor in a star’s life? ( distance from the sun, density, mass, number of orbiting planets)

  5. 2. Hydrogen

  6. What powers the Sun? • What gas is the Sun made mostly of? • T/F The four inner planets are terrestrial. • A Comet would differ from an Asteroid in that the Comet contains ________. ( frozen gases, fragments of all planets, rings, lunar soil) • What is the controlling factor in a star’s life? ( distance from the sun, density, mass, number of orbiting planets)

  7. 3. True

  8. What powers the Sun? • What gas is the Sun made mostly of? • T/F The four inner planets are terrestrial. • A Comet would differ from an Asteroid in that the Comet contains ________. ( frozen gases, fragments of all planets, rings, lunar soil) • What is the controlling factor in a star’s life? ( distance from the sun, density, mass, number of orbiting planets)

  9. 4. Frozen gases

  10. What powers the Sun? • What gas is the Sun made mostly of? • T/F The four inner planets are terrestrial. • A Comet would differ from an Asteroid in that the Comet contains ________. ( frozen gases, fragments of all planets, rings, lunar soil) • What is the controlling factor in a star’s life? ( distance from the sun, density, mass, number of orbiting planets)

  11. 5. Mass

  12. Which graph or diagram are stars plotted on? (Hertzsprung-Russell, Time-travel, Specific Gravity, Moh’s Hardness Scale) • Which is larger, the Solar System or the Milky Way? • The Light-year measures ( time, distance, light, years). • T/F All galaxies are exactly like the Milky Way. • The Solar Nebular Theory is a theory describing the formation of the _______.

  13. 6. Hertzsprung-Russell

  14. Which graph or diagram are stars plotted on? (Hertzsprung-Russell, Time-travel, Specific Gravity, Moh’s Hardness Scale) • Which is larger, the Solar System or the Milky Way? • The Light-year measures ( time, distance, light, years). • T/F All galaxies are exactly like the Milky Way. • The Solar Nebular Theory is a theory describing the formation of the _______.

  15. 7. Milky Way

  16. Which graph or diagram are stars plotted on? (Hertzsprung-Russell, Time-travel, Specific Gravity, Moh’s Hardness Scale) • Which is larger, the Solar System or the Milky Way? • The Light-year measures ( time, distance, light, years). • T/F All galaxies are exactly like the Milky Way. • The Solar Nebular Theory is a theory describing the formation of the _______.

  17. 8. Distance

  18. Which graph or diagram are stars plotted on? (Hertzsprung-Russell, Time-travel, Specific Gravity, Moh’s Hardness Scale) • Which is larger, the Solar System or the Milky Way? • The Light-year measures ( time, distance, light, years). • T/F All galaxies are exactly like the Milky Way. • The Solar Nebular Theory is a theory describing the formation of the _______.

  19. 9. False, there are elliptical and irregular ones also

  20. Which graph or diagram are stars plotted on? (Hertzsprung-Russell, Time-travel, Specific Gravity, Moh’s Hardness Scale) • Which is larger, the Solar System or the Milky Way? • The Light-year measures ( time, distance, light, years). • T/F All galaxies are exactly like the Milky Way. • The Solar Nebular Theory is a theory describing the formation of the _______.

  21. 10. Solar System

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