Microscopes & Living Things

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Across
  1. 5. a type of microscope in which light from the specimen passes through two lenses before it reaches the eye
  2. 8. a straight line passing from one side of an object or shape to the other side, passing through its centre
  3. 13. a large knob on a microscope that is used to bring the specimen roughly into focus
  4. 14. a curved piece of glass or plastic that bends light; used in microscopes and telescopes to make things appear bigger
  5. 15. the ability of a microscope, telescope or magnifying glass to increase the size of an image
  6. 16. an organism that lives in water and has only one cell in its body
  7. 17. a lens that sits directly above the stage of a microscope; there are usually three objective lenses with different power or magnification
  8. 19. the area that can be seen through a microscope, usually circular
  9. 20. another name for the ocular lens of a microscope
  10. 22. the process used by plants to produce their own food
  11. 24. the lower part of a microscope, which stops it from tipping over and contains the light source
  12. 25. the part of a microscope that connects the base to the lenses
  13. 26. part of a microscope below the stage that allows the user to adjust the brightness of the image
  14. 27. a small knob on a microscope that is used to bring the specimen into sharp focus
Down
  1. 1. a unit of length, one millionth of a metre
  2. 2. a gas found in the atmosphere; used by plants in photosynthesis and produced by living things, including humans
  3. 3. the production of offspring by living things
  4. 4. an instrument that uses lenses to allow us to view extremely small objects such as cells
  5. 6. A living thing; something that carries out life processes: move, respire, grow, reproduce, eat, excrete and respond to their environment
  6. 7. a very small microscopic object that can invade cells and use their organelles to produce copies of itself; viruses are usually classified as non-living because they are not cells
  7. 9. a type of microscope with two eyepieces that provides a 3D image of a specimen
  8. 10. a chemical reaction which provides energy for life processes in an organism
  9. 11. the conversion of chemicals in the environment into the parts of the body of a living organism (sometimes called nutrition)
  10. 12. too small to see without the help of a microscope
  11. 18. magnification the overall magnification provided by two lenses in a compound light microscope
  12. 21. a type of microscope that uses beams of electrons instead of light; electron microscopes are much more powerful than traditional light microscopes
  13. 23. the lens in a microscope that is closest to the eye; it usually has a magnification of 10x