science quiz

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Across
  1. 1. An animal that uses its moist skin to breathe.( 4 words)
  2. 6. The green part of a plant that makes food.(4 words)
  3. 7. Living things need this to breathe.(3 words)
  4. 11. This animal has an exoskeleton and three pairs of legs.( 6 words)
  5. 13. A material that does not absorb water.(7 words)
  6. 14. A vertebrate animal that starts with the letter ‘b’.( 4 words)
  7. 17. Light travels in a ____ line.(8 words)
  8. 18. The process carried out by plants to make their own food. ( 14 words)
  9. 20. Animals need this to live.(5 waters)
Down
  1. 2. A material that does not allow light to pass through it.( 6 words)
  2. 3. An organ that pumps blood.(5 words)
  3. 4. What is one of the stimuli received by human sense organs? ( 5 words)
  4. 5. An animal that has two breathing organs and can live on land and in water.( 4 words)
  5. 8. Plants need ____ for photosynthesis.(5 words)
  6. 9. Which human organ produces carbon dioxide and water? ( 5 words)
  7. 10. A transparent material that allows light to pass through.(5 words)
  8. 12. A hot and bright source of energy.(3 words)
  9. 15. The part of a plant found in the soil.(4 words)
  10. 16. A living thing that can move by itself.(6 words)
  11. 19. The ability to do work.(6 words)