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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 181 · 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.🔮 Predict: on a fully cloudy day, the sundial ___. (a) runs faster (b) does not work well (c) works better (d) shows two times
  2. 2.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a mirror (b) a sunny open place (c) chalk to mark shadows (d) a straight stick
  3. 3.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) smaller (b) coloured (c) brighter (d) bigger
  4. 4.True or false: a sunny open place is not needed for the shadow clock. (a) False (b) True
  5. 5.🔦 Which of these is transparent? (a) a book (b) oily paper (c) clear glass (d) a steel plate
  6. 6.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the time of day is kept the same. (a) False (b) True
  7. 7.True or false: a battery cell is not needed for the shadow clock. (a) True (b) False
  8. 8.🧺 Which of these is needed for the shadow clock? (a) turmeric powder (b) yeast (c) a clock to check (d) a mirror
  9. 9.🧺 Do we need a magnet for the shadow clock? (a) needed (b) not needed
  10. 10.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) the same stick (b) shadow length (c) the time of day
  11. 11.🔦 Which of these is transparent? (a) a brick (b) oily paper (c) clear plastic film (d) butter paper
  12. 12.🧺 Do we need turmeric powder for the shadow clock? (a) not needed (b) needed
  13. 13.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) chalk to mark shadows (c) a balloon (d) a clock to check
  14. 14.True or false: a wooden board is opaque. (a) True (b) False
  15. 15.🛟 While watching shadows outdoors, what must you never do? (a) wear a cap (b) sit in the shade (c) mark with chalk (d) look straight at the Sun
  16. 16.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a clock to check (c) a sunny open place (d) a battery cell
  17. 17.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is what we measure. (a) True (b) False
  18. 18.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) chalk to mark shadows (c) a straight stick (d) yeast
  19. 19.🔦 Is air opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
  20. 20.🔦 Is tissue paper opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
  21. 21.True or false: a brick is transparent. (a) False (b) True
  22. 22.🛟 What should you wear for a long time in the hot sun? (a) a woollen sweater (b) a raincoat (c) a cap or hat (d) nothing on your head
  23. 23.True or false: chalk to mark shadows is not needed for the shadow clock. (a) False (b) True
  24. 24.True or false: butter paper is translucent. (a) True (b) False
  25. 25.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) a clock to check (c) turmeric powder (d) chalk to mark shadows
  26. 26.True or false: a book is opaque. (a) True (b) False
  27. 27.⚖️ 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 change it (c) we keep it the same
  28. 28.🌞 When is a stick’s shadow the shortest? (a) early morning (b) late evening (c) around noon (d) at night
  29. 29.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) turmeric powder (c) chalk to mark shadows (d) a sunny open place
  30. 30.True or false: yeast is not needed for the shadow clock. (a) True (b) False
  31. 31.🕰️ What is a sundial used for? (a) measuring rain (b) making rainbows (c) weighing things (d) telling the time
  32. 32.🔦 Is a brick opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
  33. 33.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the time of day”? (a) we change it (b) we measure it (c) we keep it the same
  34. 34.True or false: a magnet is not needed for the shadow clock. (a) True (b) False
  35. 35.True or false: a mirror is needed for the shadow clock. (a) False (b) True
  36. 36.🔦 Is clean water opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
  37. 37.🌍 Why does the stick’s shadow move during the day? (a) the stick grows (b) the ground slides (c) Earth keeps spinning (d) the stick walks
  38. 38.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same spot”? (a) we keep it the same (b) we change it (c) we measure it
  39. 39.🔦 Which of these is opaque? (a) oily paper (b) clear glass (c) a book (d) tissue paper
  40. 40.🔍 Which is the odd one out? (a) butter paper (b) frosted glass (c) oily paper (d) clear glass

Answer key

  1. does not work well
  2. a mirror
  3. bigger
  4. False
  5. clear glass
  6. False
  7. True
  8. a clock to check
  9. not needed
  10. the same stick
  11. clear plastic film
  12. not needed
  13. a balloon
  14. True
  15. look straight at the Sun
  16. a battery cell
  17. True
  18. yeast
  19. transparent
  20. translucent
  21. False
  22. a cap or hat
  23. False
  24. True
  25. turmeric powder
  26. True
  27. we keep it the same
  28. around noon
  29. turmeric powder
  30. True
  31. telling the time
  32. opaque
  33. we change it
  34. True
  35. False
  36. transparent
  37. Earth keeps spinning
  38. we keep it the same
  39. a book
  40. clear glass

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