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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 835 · 40 questions
TalentJR

What you do (Shadows point away from the Sun): 1. Stand the stick upright in the ground in an open sunny place. 2. Every hour, mark the tip of the shadow with chalk and write the time. 3. Measure the length of each shadow. 4. Wear a cap and never look straight at the Sun.

NameDateTime takenScore ___ / 40
  1. 1.🧺 Do we need chalk to mark shadows for the shadow clock? (a) not needed (b) needed
  2. 2.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) the time of day (b) the stick kept upright (c) shadow length (d) the same stick
  3. 3.🌞 When is a stick’s shadow the shortest? (a) late evening (b) around noon (c) early morning (d) at night
  4. 4.True or false: a straight stick is not needed for the shadow clock. (a) False (b) True
  5. 5.🕰️ What is a sundial used for? (a) measuring rain (b) weighing things (c) making rainbows (d) telling the time
  6. 6.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is kept the same. (a) True (b) False
  7. 7.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) the same stick (b) the time of day (c) the stick kept upright (d) shadow length
  8. 8.🛟 While watching shadows outdoors, what must you never do? (a) mark with chalk (b) look straight at the Sun (c) sit in the shade (d) wear a cap
  9. 9.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same stick”? (a) we measure it (b) we keep it the same (c) we change it
  10. 10.🔦 Is a steel plate opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
  11. 11.True or false: a book is transparent. (a) True (b) False
  12. 12.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a clock to check (c) a sunny open place (d) a balloon
  13. 13.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a straight stick (c) a clock to check (d) a magnet
  14. 14.🧺 Do we need a mirror for the shadow clock? (a) needed (b) not needed
  15. 15.🧺 Do we need a battery cell for the shadow clock? (a) needed (b) not needed
  16. 16.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) bigger (b) coloured (c) brighter (d) smaller
  17. 17.🔍 Which is the odd one out? (a) oily paper (b) frosted glass (c) butter paper (d) air
  18. 18.🧺 Do we need yeast for the shadow clock? (a) needed (b) not needed
  19. 19.True or false: clear glass is transparent. (a) False (b) True
  20. 20.🧺 Which of these is needed for the shadow clock? (a) yeast (b) a balloon (c) a magnet (d) a clock to check
  21. 21.True or false: your hand is transparent. (a) True (b) False
  22. 22.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the time of day is what we measure. (a) True (b) False
  23. 23.🛟 What should you wear for a long time in the hot sun? (a) nothing on your head (b) a raincoat (c) a cap or hat (d) a woollen sweater
  24. 24.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “shadow length”? (a) we keep it the same (b) we measure it (c) we change it
  25. 25.🧺 Do we need a clock to check for the shadow clock? (a) needed (b) not needed
  26. 26.🔮 Predict: on a fully cloudy day, the sundial ___. (a) runs faster (b) shows two times (c) works better (d) does not work well
  27. 27.True or false: clear plastic film is transparent. (a) False (b) True
  28. 28.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same spot”? (a) we measure it (b) we change it (c) we keep it the same
  29. 29.🔦 Which of these is opaque? (a) clear plastic film (b) tissue paper (c) a book (d) air
  30. 30.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) long (b) short (c) round (d) missing
  31. 31.🧺 Do we need a balloon for the shadow clock? (a) needed (b) not needed
  32. 32.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) turmeric powder (b) chalk to mark shadows (c) a sunny open place (d) a straight stick
  33. 33.True or false: chalk to mark shadows is not needed for the shadow clock. (a) False (b) True
  34. 34.True or false: clear plastic film is translucent. (a) True (b) False
  35. 35.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) yeast (c) chalk to mark shadows (d) a clock to check
  36. 36.True or false: a balloon is not needed for the shadow clock. (a) True (b) False
  37. 37.True or false: tissue paper is translucent. (a) True (b) False
  38. 38.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is the one thing we change. (a) False (b) True
  39. 39.🧺 Do we need a sunny open place for the shadow clock? (a) needed (b) not needed
  40. 40.🔍 Which is the odd one out? (a) clear glass (b) clear plastic film (c) clean water (d) a brick

Answer key

  1. needed
  2. the time of day
  3. around noon
  4. False
  5. telling the time
  6. False
  7. shadow length
  8. look straight at the Sun
  9. we keep it the same
  10. opaque
  11. False
  12. a balloon
  13. a magnet
  14. not needed
  15. not needed
  16. bigger
  17. air
  18. not needed
  19. True
  20. a clock to check
  21. False
  22. False
  23. a cap or hat
  24. we measure it
  25. needed
  26. does not work well
  27. True
  28. we keep it the same
  29. a book
  30. long
  31. not needed
  32. turmeric powder
  33. False
  34. False
  35. yeast
  36. True
  37. True
  38. False
  39. needed
  40. a brick

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