Unit 3 Vocabulary Review

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Across
  1. 1. Dark spots that are visible on the surface of the sun that are caused by intense magnetic activity that disrupts convection forming areas of reduced surface temperature
  2. 3. Equipment used to magnify objects far away.
  3. 5. This occurs when the Moon passes between the Sun and the Earth so that the Sun is completely or partially obscured.
  4. 7. This is a natural satellite that orbits a planet or smaller body.
  5. 8. This is the tide that occurs twice a month, when the difference between high and low tide is least; the lowest level of high tide.
  6. 11. This is an arc of gas that erupts from the surface of the Sun (also called a filament) which can loop hundreds of thousands of miles into space.
  7. 14. These are caused by the gravitational pull of the moon.
  8. 15. This is the distance that a light travels in 365.25 earth days.
  9. 16. One of four major divisions of the year based on the Earth's tilt and the light from the sun.
  10. 17. The layer of the Sun above the chromosphere which is hotter than the Sun's surface.
  11. 18. This occurs when the Moon passes through some portion of the Earth's shadow. This can occur only when the Sun, Earth, and Moon are aligned exactly, or very closely.
  12. 19. This is a massive, gravitationally bound system consisting of stars, interstellar gas and dust, and dark matter.
  13. 20. This is the very high and low tides that occur during the new moon or the full moon when the sun, moon, and earth are approximately aligned.
  14. 22. This is an attractive force between any two objects due to mass.
  15. 23. This is a massive ball of plasma that shines because of thermonuclear fusion in its core.
Down
  1. 1. A specially designed robotic space vehicle designed to explore various aspects of the solar system.
  2. 2. This is an instrument used to analyze the component parts of a sample by separating its parts into a color spectrum.
  3. 4. This is the Sun and the celestial objects bound to it by gravity.
  4. 6. This is the star at the center of the solar system around which the Earth and other matter orbit.
  5. 9. A large, rocky body found in space. It often orbits the sun in a belt between Mars and Jupiter.
  6. 10. The third planet from the sun.
  7. 12. This is the distance between the sun and the earth. It is the standard unit for distance within our solar system.
  8. 13. This is the visible event that occurs when an asteroid enters Earth's atmosphere and becomes visible.
  9. 21. This is a celestial body in orbit around a star.