KS3 Unit 5 - Space, Earth and Sustainability Crossword

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Across
  1. 1. the solid rocks at the surface of the Earth.
  2. 4. all the galaxies and the space between them.
  3. 6. a pattern of stars.
  4. 8. the line at which the Earth’s surface and the sky appear to meet.
  5. 9. atmosphere the layers of gases that surround the Earth.
  6. 10. getting rid of objects at the end of their use.
  7. 11. these are materials that come from the Earth (minerals, metals, water etc).
  8. 15. a star with planets and other objects orbiting it.
  9. 16. an energy resource that will never run out (e.g. solar power)
  10. 18. the length of time it takes a planet to go around the Sun once. One year on Earth is 365.25 days.
  11. 21. oval shaped. The shape of a planet’s orbit around the Sun.
  12. 22. a small lump of dirty ice orbiting the Sun.
  13. 23. the force of attraction between any two objects. The Earth is very big and so has strong gravity that pulls everything down towards it.
  14. 24. anything that orbits a planet.
  15. 26. the middle of the Earth.
  16. 27. rocks that contain sufficient metal compounds that it can be extracted to produce pure metal.
  17. 33. rock formed from interlocking crystals.
  18. 34. an igneous rock that has formed underground slowly. They have large crystals.
  19. 36. molten rock that runs out of volcanoes.
  20. 37. these are resources that will one day run out.
  21. 40. the path that a planet takes around a star, or the path that a moon or satellite takes around a planet.
  22. 41. a rock formed from interlocking crystals that are often lined up in layers.
  23. 42. the point in the sky or celestial sphere directly above an observer.
  24. 47. a flow of liquid or gas caused by part of it being heated or cooled more than the rest.
  25. 49. a model of the solar system which stated that the Earth was the centre of the solar system.
  26. 51. when rocks are broken up by physical, chemical or biological processes.
  27. 52. the galaxy that our Solar System is in.
  28. 53. porous rocks have tiny holes in them.
  29. 54. the part of the Earth below the crust.
  30. 55. using a material again, often by melting it and using it to make new objects.
  31. 57. a huge ball of gas that gives out heat and light energy.
Down
  1. 1. the theory that pieces of the Earth’s crust moved through the rocks beneath the ocean.
  2. 2. a way of living that does not use up non-renewable resources or harm things in our surroundings. Something that is sustainable allows things to continue into the future.
  3. 3. the two halves of a sphere – the shape you would get it you cut a solid ball in half.
  4. 5. able to be broken down by bacteria or other living organisms.
  5. 7. tiny pieces of plastic that can build up in the environment and living things.
  6. 12. when rocks are broken up or worn away by chemical reactions, usually with rainwater.
  7. 13. a model of the solar system which stated that the Sun is the centre of the solar system.
  8. 14. molten rock beneath the surface of the Earth.
  9. 17. a small body moving in the solar system that would become a meteor if it entered the Earth’s atmosphere.
  10. 19. removing metal from metal ore so that it can be used to make things.
  11. 20. site large area in which rubbish is left.
  12. 25. the movement of loose and weathered rock.
  13. 28. a rock formed from grins stuck together. The grains are often rounded.
  14. 29. when an object is used again, without being broken up or recycled.
  15. 30. single landmass of the Earth’s continents millions of years ago.
  16. 31. the ability to withstand wear, pressure or damage.
  17. 32. millions of stars grouped together.
  18. 35. when rocks are worn away or broken up due to the activities of living things. For example, growing plant roots can split rocks apart.
  19. 38. substances that do not break down naturally for many years when disposed of.
  20. 39. a piece of rock or metal that has fallen to the Earth’s surface from outer space.
  21. 43. the distance that light travels in one year.
  22. 44. when rocks are worn away or broken up by physical processes such as changes in temperature.
  23. 45. the chemicals that rocks are made from.
  24. 46. a natural satellite of a planet.
  25. 48. all the processes which form sedimentary, igneous and metamorphic rocks linked together.
  26. 50. an igneous rock that has formed above the crust in the air or water. They have small crystals.
  27. 56. a cloud of gas and dust in outer space.