Across
- 3. The measure of how hot or cold something is
- 4. Smaller objects that orbit planets
- 6. Water changes to a liquid to a glass
- 8. Land that rises above the land around it
- 13. The imaginary line around the center of the Earth
- 15. Sides that curve down the mountain
- 16. Natural flow if water that runs into a lake or ocean
- 18. Groups of stars in patterns
- 21. The bottom of a river
- 26. Who was the first man on the moon
- 28. The ocean has what type of water
- 30. Tiny planets made of rock and metal
- 31. How many continents are there
- 32. The end of the river
- 33. Long pointed rocks that rise from the floor
- 36. Water drops in the clouds fall to Earth
- 37. The largest cave system ever explored
- 39. Lowest place on Earth
- 40. An object in space that orbits another object in space
- 41. Jupiter, Saturn, Uranus, Neptune and Pluto
- 42. What ocean is the largest
- 43. Flat land that is lower than the land around it
- 44. Tools that make distant objects look closer
- 46. The low places between two mountains
- 49. How did the Hawaiian Islands form
- 51. Largest land masses are called
- 53. All Planets are held in orbit by what force
- 55. A way for people to explore space
- 58. Long pointed rocks that hang from the roof
- 59. Most of the water on Earth comes from this
- 60. What is it called when February has 29 days
- 61. Pointed tops of mountains
- 63. When water falls to Earth
- 64. Landforms that are much higher than the land around them
Down
- 1. People who study the weather
- 2. The condition of the air around us
- 5. Underground holes big enough for a person to enter
- 7. Deep valleys with steep sides
- 9. Which ocean is near the North Pole
- 10. The sides of the river
- 11. When water vapor turns back into water
- 12. Spinning of the Earth is called
- 14. Longest river in the world
- 17. Made of ice, gas and dust
- 19. A curved path around the sun
- 20. Mercury, Venus, Mars, Earth
- 22. How is temperature measured
- 23. Tells the direction of the wind
- 24. Groups of mountains
- 25. We live on what planet
- 27. Low ground that holds a lake
- 29. Movement of water between the ground and the atmosphere
- 33. Where the ocean and and land meet
- 34. Huge balls of hot gasses
- 35. What do plants need to live in the ocean
- 38. Part of the ocean floor
- 40. Steep hill on the ocean floor
- 45. What gas do people breathe
- 47. When water vapor goes into the air
- 48. Most famous river in the US
- 50. The rock found in most caves
- 52. The time it takes the Earth to orbit the sun
- 54. Where two sloping surfaces meet
- 56. Wide flat floor at the end of the ocean slope
- 57. Imaginary line that goes through Earth's poles
- 62. Earth ad other planets revolve around this