The Invisible World Video Worksheet How small is small? Name: 1. Advances in what kind of technology is helping us see things that we have never seen before? 2. Our eyes can barely see what size objects? (It’s a fraction of an inch…) 3. When were bacteria discovered? 4. What kind of microscope uses a beam of electrons to see things very small and detailed? 5. How small do we have to magnify a flower to see single grains of pollen? 6. What do dust mites eat? 7. What lives in the roots of our eyelashes? 8. How long does it take a single bacterium to multiply to millions? 9. What type of atoms do they show on the video first? First black, and then colored red? 10. What creature did Edward Muybridge use stop-action photography in order to win a bet? What was the bet? 11. What is ‘making applesauce’? 12. What kind of photography is used to videotape things that are too slow to see? 13. What is the spectrum of waves that constantly vibrate around us called? 14. Using what kind of rays can be seen by bees and show patterns on flowers? 15. What did they find wrong with King Tut’s body and his death using X-rays? 16. What type of photography shows fields of energy emanating from our bodies? 17. What are the smallest parts of atoms called? 18. How many galaxies does the universe contain approximately? 19. Make a list of as many of the small things from the video as you can. List them in order from smallest to largest. Make sure to include the atom as one of the things.