Across
- 1. The apparent shape of the illuminated part of the Moon when it is observed from Earth.
- 6. A physical representation of an object which is larger or smaller than the actual object but maintains the same proportions as the real object.
- 7. The mixture of gasses that surrounds a planet.
- 9. The decreasing phases of the Moon.
- 10. The process by which a liquid changes to a gas.
- 11. All the living things on Earth and their interactions in the places they live.
- 12. The process by which water circulates among Earth’s surface, crust, and atmosphere.
- 16. The movement of an object around its axis. Earth does one of these every 24 hours.
- 19. An object in space made of burning gas that emits light.
- 23. The force that attracts all objects toward each other.
- 25. Half of a sphere; on Earth, the Northern and Southern of these are separated by the equator.
- 27. A system of millions or billions of stars, gas, and dust held together in a cluster by gravity.
- 28. A group of stars that is considered to form a pattern in the sky.
- 30. Tides that occur during a first quarter or third (last) quarter moon phase and result in tide heights that are lower than normal.
- 33. Planets and other objects that move around a central star.
- 35. Any form of water that falls from the sky.
Down
- 1. An object in space that revolves around a planet and is illuminated by reflected light from the Sun.
- 2. A material found in nature, and systems on Earth.
- 3. Regions of Earth that contain water as solid, liquid, or gas on the surface and in the atmosphere.
- 4. The star at the center of our solar system.
- 5. An imaginary line around Earth, at 0° latitude that is equal distance from the poles. This line divides Earth into two halves, the Northern Hemisphere and the Southern Hemisphere.
- 7. An imaginary line that a body rotates about. Earth’s passes through both its north and south poles.
- 8. Tides that occur during a full moon or new moon phase and result in a higher high tide and lower low tide.
- 13. Solid parts of Earth, such as soils, sediments and rocks, which is sometimes called the lithosphere.
- 14. All existing matter and space.
- 15. A straight line across the widest point of a circle or sphere.
- 17. The period during Earth’s rotation in which the Sun’s light is not reaching Earth; between sunset and sunrise.
- 18. A solid or gaseous object orbiting a star.
- 20. A group of related parts that work together.
- 21. The period during Earth’s rotation in which there is sunlight; after sunrise and before sunset.
- 22. A representation of an object or idea.
- 24. The increasing phases of the Moon.
- 26. Water that flows over the land surface, pulled downhill by gravity, and makes its way into bodies of water such as rivers, lakes, and the ocean.
- 27. A slow-moving mass of ice on land.
- 29. The movement of one body around another. Earth makes one of these around the Sun in a year.
- 31. A division of the year with noticeable patterns in weather and amount of daylight. Shadow A dark area made by an object that is blocking some or all light.
- 32. The periodic rise and fall of the ocean.
- 34. The path of one object as it revolves around another. Earth orbits the Sun; the Moon orbits Earth.