Hy

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Across
  1. 3. Sudden shaking of the ground
  2. 5. Device used to measure earthquakes
  3. 7. Red planet
  4. 8. Molten rock that flows on the surface
  5. 12. Rock formed from sediments
  6. 16. All water on Earth
  7. 18. Movement of Earths plates
  8. 20. Burning of fossil fuels
  9. 24. Pattern of stars in the sky
  10. 27. Frozen rain
  11. 28. Study of weather
  12. 30. Process plants use to make food
  13. 31. Plate boundary that moves apart
  14. 35. Rock formed by heat and pressure
  15. 36. Increase in Earths temperature
  16. 37. Energy from underground heat
  17. 38. Earths natural satellite
  18. 40. Bowl shaped top of a volcano
  19. 41. Plate boundary that collides
  20. 42. Long term change in climate
  21. 44. Release of magma from a volcano
  22. 46. Movement of rock by wind or water
  23. 49. Scientist who studies volcanoes
Down
  1. 1. Cutting down of trees
  2. 2. Opening where magma escapes
  3. 4. Solid materials from eruption
  4. 6. Largest planet
  5. 9. Innermost layer of Earth
  6. 10. Harmful gases in air
  7. 11. Thick layer below the crust
  8. 13. Rock formed from cooled lava
  9. 14. Path of a planet around the sun
  10. 15. Giant ball of hot gas in space
  11. 17. Center star of our solar system
  12. 19. Layer of Earth where we live
  13. 21. All living things on Earth
  14. 22. Breaking rocks into smaller pieces
  15. 23. Layer of gases around Earth
  16. 25. Protects Earth from UV rays
  17. 26. Hottest planet
  18. 28. Scientist who studies weather
  19. 29. Trapped heat in Earths atmosphere
  20. 32. Moving air
  21. 33. Related to earthquakes
  22. 34. Volcanic ash cloud
  23. 39. Plate boundary that slides past
  24. 43. Force that pulls objects toward Earth
  25. 45. Molten rock beneath Earths surface
  26. 47. Water from clouds
  27. 48. Planet with rings