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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 885 · 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.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the time of day”? (a) we keep it the same (b) we change it (c) we measure it
  2. 2.🧺 Do we need chalk to mark shadows for the shadow clock? (a) not needed (b) needed
  3. 3.🧺 Do we need a clock to check for the shadow clock? (a) needed (b) not needed
  4. 4.True or false: a balloon is not needed for the shadow clock. (a) True (b) False
  5. 5.🧺 Which of these is not needed for the shadow clock? (a) a clock to check (b) a straight stick (c) a sunny open place (d) a balloon
  6. 6.🔮 Predict: on a fully cloudy day, the sundial ___. (a) shows two times (b) works better (c) runs faster (d) does not work well
  7. 7.🧺 Which of these is needed for the shadow clock? (a) a balloon (b) a mirror (c) yeast (d) a sunny open place
  8. 8.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is kept the same. (a) False (b) True
  9. 9.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the time of day is the one thing we change. (a) False (b) True
  10. 10.True or false: a mirror is not needed for the shadow clock. (a) False (b) True
  11. 11.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a magnet (c) a sunny open place (d) a straight stick
  12. 12.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) the time of day (b) the same stick (c) shadow length
  13. 13.🕰️ What is a sundial used for? (a) telling the time (b) measuring rain (c) making rainbows (d) weighing things
  14. 14.🔦 Is a book opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
  15. 15.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is kept the same. (a) True (b) False
  16. 16.True or false: a battery cell is not needed for the shadow clock. (a) True (b) False
  17. 17.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) smaller (b) bigger (c) brighter (d) coloured
  18. 18.True or false: a brick is opaque. (a) False (b) True
  19. 19.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) round (b) missing (c) long (d) short
  20. 20.True or false: clear plastic film is transparent. (a) False (b) True
  21. 21.🔦 Which of these is transparent? (a) clear glass (b) frosted glass (c) a steel plate (d) a book
  22. 22.True or false: clear plastic film is translucent. (a) True (b) False
  23. 23.True or false: a battery cell is needed for the shadow clock. (a) True (b) False
  24. 24.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) a sunny open place (c) a battery cell (d) a straight stick
  25. 25.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) chalk to mark shadows (c) a straight stick (d) yeast
  26. 26.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) the same stick (b) the same spot (c) the time of day (d) the stick kept upright
  27. 27.True or false: your hand is transparent. (a) False (b) True
  28. 28.🔦 Is air opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
  29. 29.🧺 Do we need a balloon for the shadow clock? (a) not needed (b) needed
  30. 30.🧺 Which of these is not needed for the shadow clock? (a) turmeric powder (b) chalk to mark shadows (c) a straight stick (d) a clock to check
  31. 31.🔍 Which is the odd one out? (a) oily paper (b) air (c) tissue paper (d) frosted glass
  32. 32.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “shadow length”? (a) we measure it (b) we change it (c) we keep it the same
  33. 33.🧺 Which of these is needed for the shadow clock? (a) yeast (b) a magnet (c) a balloon (d) a straight stick
  34. 34.True or false: a sunny open place is needed for the shadow clock. (a) True (b) False
  35. 35.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) shadow length (b) the same stick (c) the same spot (d) the time of day
  36. 36.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) a clock to check (c) a sunny open place (d) a mirror
  37. 37.🔦 Which of these is opaque? (a) oily paper (b) a steel plate (c) frosted glass (d) clean water
  38. 38.🌞 When is a stick’s shadow the shortest? (a) at night (b) late evening (c) around noon (d) early morning
  39. 39.🔦 Is tissue paper opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
  40. 40.🔦 Which of these is opaque? (a) frosted glass (b) clean water (c) a brick (d) tissue paper

Answer key

  1. we change it
  2. needed
  3. needed
  4. True
  5. a balloon
  6. does not work well
  7. a sunny open place
  8. True
  9. True
  10. True
  11. a magnet
  12. the same stick
  13. telling the time
  14. opaque
  15. True
  16. True
  17. bigger
  18. True
  19. long
  20. True
  21. clear glass
  22. False
  23. False
  24. a battery cell
  25. yeast
  26. the time of day
  27. False
  28. transparent
  29. not needed
  30. turmeric powder
  31. air
  32. we measure it
  33. a straight stick
  34. True
  35. shadow length
  36. a mirror
  37. a steel plate
  38. around noon
  39. translucent
  40. a brick

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