Science Crossword

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Across
  1. 2. the absence of light.
  2. 3. the force that acts to keep things on the ground on Earth.
  3. 4. this is what two opposite magnetic pole do.
  4. 5. the name for the roots of a plant when the roots have lots of small hairy shoots.
  5. 8. the system in the body that allows food to be processed.
  6. 10. the path of the Earth round the sun.
  7. 12. the job that the human skeleton does for all the organs in our body.
  8. 13. if you can't see through something, it is said to be this.
  9. 14. the part of a plant that transports water to the whole plant and keeps it upright.
  10. 15. this is what two like magnetic poles do.
  11. 16. this is formed when an object blocks out the light.
Down
  1. 1. this mixes with food in the mouth to soften the food and allow swallowing.
  2. 3. a very hard impermeable rock.
  3. 6. something which gives out light is called a light........
  4. 7. the word for how seeds are spread from the original plant.
  5. 9. this type of skeleton is on the outside of a body like a crab.
  6. 11. push and pull are types of?
  7. 16. our main source of light and heat on Earth