Year 7 Science Revision Crossword

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Across
  1. 3. the organ system responsible for pumping blood around the body
  2. 4. the name for the planet closest to the Sun
  3. 6. the smallest unit of a living organism
  4. 9. a collection of organs working together to fulfill a particular function
  5. 10. the jelly-like substance inside a cell where most chemical reactions happen
  6. 13. the part of the cell where photosynthesis happens
  7. 14. a collection of tissues working together to fulfill a particular function
  8. 15. the spreading out of particles to an area of lower concentration
  9. 17. a measure of the number of particles in a given volume
  10. 20. a substance made of two or more types of atom chemically bonded together
  11. 21. the name for the gas that we require for respiration
  12. 22. the process by which cells release energy from glucose
  13. 26. a collection of cells working together to fulfill a particular function
  14. 27. when the Moon passes between the Sun and the Earth, casting a shadow on the Earth
  15. 31. when the Earth passes between the Sun and the Moon, casting a shadow on the Moon
  16. 32. these are caused by the tilt of the Earth's axis and change throughout the year
  17. 33. this cell has a large surface area to collect water and minerals from the soil
  18. 34. the name for a day when the day and the night are exactly the same length
Down
  1. 1. the process by which cells make glucose from water, carbon dioxide, and sunlight
  2. 2. a chemical reaction which releases heat to the surroundings
  3. 5. the name for the gas that we produce in respiration
  4. 7. the organ system responsible for sensing and sending electrical signals around the body
  5. 8. this cell has a flagellum (tail) to swim towards an egg cell
  6. 11. the name for how long it takes a planet to complete one full orbit around the Sun
  7. 12. a substance made of two or more elements or compounds mixed together
  8. 16. the part of the cell where respiration happens
  9. 18. the part of the cell that controls the cell and contains genetic information
  10. 19. a chemical reaction which takes in heat from the surroundings
  11. 23. these cells transport oxygen around the body
  12. 24. the name for the largest planet in the Solar System
  13. 25. the name for the star in our Solar System
  14. 27. the day in the year which has the longest day and the shortest night
  15. 28. the name for how long it takes a planet to complete one full rotation on its axis
  16. 29. the outer layer of a cell which lets substances pass in or out
  17. 30. a substance made of only one type of atom