Science review

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Across
  1. 2. gases Harmful gases released during a volcanic eruption, such as sulfur dioxide and carbon monoxide.
  2. 4. The apparent path of the Sun across the sky throughout the year.
  3. 7. Fine particles of rock and minerals ejected during a volcanic eruption.
  4. 12. The largest moon of Saturn, with a thick atmosphere.
  5. 13. Sudden shaking of the Earth's surface caused by movement along fault lines.
  6. 16. The point on Earth's surface directly above the earthquake's hypocenter.
  7. 19. system The planetary system that includes the Sun and its orbiting planets.
  8. 20. scale A scale used to measure the magnitude of an earthquake.
  9. 23. The star at the center of our Solar System.
  10. 24. Molten rock that moves over the Earth's surface during a volcanic eruption.
  11. 26. An instrument used to detect and record earthquake vibrations.
  12. 27. The movement of rock, soil, and debris down a slope due to gravity.
  13. 28. The largest moon of Neptune, known for its retrograde orbit.
  14. 29. The smallest and closest planet to the Sun.
  15. 31. The seventh planet from the Sun, known for its tilted rotation.
  16. 32. planets The four inner planets of the Solar System: Mercury, Venus, Earth, and Mars.
  17. 35. The visible surface of the Sun from which light is emitted.
  18. 36. The central core of a comet, composed of ice, dust, and rock.
  19. 38. Way The galaxy that contains our Solar System.
  20. 39. planets The gas giants of the Solar System: Jupiter, Saturn, Uranus, and Neptune.
  21. 40. Rapid flows of snow and ice down a mountain slope.
Down
  1. 1. The eighth and farthest planet from the Sun, known for its strong winds.
  2. 3. A layer of the Sun's atmosphere located between the photosphere and corona.
  3. 5. system A group of celestial bodies, including planets, orbiting a star.
  4. 6. A volcanic moon of Jupiter, known for its active volcanoes.
  5. 8. The sixth planet from the Sun, famous for its ring system.
  6. 9. The force that attracts objects toward one another, especially toward the center of a planet.
  7. 10. A destructive mudflow on the slopes of a volcano.
  8. 11. The second planet from the Sun, known for its thick, toxic atmosphere.
  9. 13. The third planet from the Sun and the only known planet to support life.
  10. 14. The fourth planet from the Sun, often called the "Red Planet."
  11. 15. The underground point where an earthquake originates.
  12. 17. The observed effects and damage caused by an earthquake.
  13. 18. The oval-shaped orbit of planets around the Sun.
  14. 21. Large ocean waves caused by underwater earthquakes or volcanic eruptions.
  15. 22. A fast-moving flow of hot gas, ash, and volcanic debris.
  16. 25. The scientific study of volcanoes and volcanic activity.
  17. 30. A violent release of energy during a volcanic eruption.
  18. 33. The largest planet in the Solar System, known for its Great Red Spot.
  19. 34. One of the two small moons of Mars.
  20. 37. The outermost layer of the Sun's atmosphere, visible during a solar eclipse.
  21. 38. The measure of energy released by an earthquake.