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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 98 · 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? True or false: the same spot is the one thing we change. (a) True (b) False
  2. 2.True or false: a straight stick is not needed for the shadow clock. (a) False (b) True
  3. 3.🧺 Which of these is needed for the shadow clock? (a) turmeric powder (b) a straight stick (c) a balloon (d) yeast
  4. 4.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) chalk to mark shadows (c) yeast (d) a clock to check
  5. 5.True or false: your hand is opaque. (a) True (b) False
  6. 6.True or false: a magnet is not needed for the shadow clock. (a) False (b) True
  7. 7.🧺 Which of these is not needed for the shadow clock? (a) turmeric powder (b) a clock to check (c) chalk to mark shadows (d) a straight stick
  8. 8.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) short (b) round (c) missing (d) long
  9. 9.True or false: a sunny open place is not needed for the shadow clock. (a) True (b) False
  10. 10.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) a mirror (c) a straight stick (d) a sunny open place
  11. 11.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same stick”? (a) we keep it the same (b) we change it (c) we measure it
  12. 12.📘 Why does a shadow form? (a) the ground is dark (b) the object is cold (c) light bends round it (d) an object blocks light
  13. 13.🛟 What should you wear for a long time in the hot sun? (a) a woollen sweater (b) a cap or hat (c) a raincoat (d) nothing on your head
  14. 14.True or false: a book is opaque. (a) True (b) False
  15. 15.True or false: a book is transparent. (a) True (b) False
  16. 16.🌍 Why does the stick’s shadow move during the day? (a) the ground slides (b) Earth keeps spinning (c) the stick walks (d) the stick grows
  17. 17.True or false: clean water is opaque. (a) True (b) False
  18. 18.🔦 Is a book opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
  19. 19.⚖️ 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
  20. 20.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) chalk to mark shadows (c) a sunny open place (d) a balloon
  21. 21.True or false: a steel plate is opaque. (a) True (b) False
  22. 22.🧺 Which of these is needed for the shadow clock? (a) a magnet (b) a balloon (c) a clock to check (d) a battery cell
  23. 23.True or false: yeast is needed for the shadow clock. (a) True (b) False
  24. 24.🧺 Which of these is needed for the shadow clock? (a) a balloon (b) a mirror (c) a magnet (d) chalk to mark shadows
  25. 25.🔦 Is tissue paper opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
  26. 26.🔦 Which of these is translucent? (a) butter paper (b) clear glass (c) clean water (d) clear plastic film
  27. 27.🔦 Is butter paper opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
  28. 28.🛟 While watching shadows outdoors, what must you never do? (a) wear a cap (b) look straight at the Sun (c) sit in the shade (d) mark with chalk
  29. 29.True or false: oily paper is translucent. (a) True (b) False
  30. 30.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is what we measure. (a) False (b) True
  31. 31.🔮 Predict: on a fully cloudy day, the sundial ___. (a) runs faster (b) shows two times (c) works better (d) does not work well
  32. 32.🌞 When is a stick’s shadow the shortest? (a) late evening (b) at night (c) early morning (d) around noon
  33. 33.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) the same spot (b) the same stick (c) the stick kept upright (d) shadow length
  34. 34.⚖️ 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
  35. 35.True or false: a clock to check is needed for the shadow clock. (a) True (b) False
  36. 36.⚖️ 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) True (b) False
  37. 37.True or false: clear plastic film is transparent. (a) True (b) False
  38. 38.True or false: a steel plate is translucent. (a) True (b) False
  39. 39.🧺 Do we need chalk to mark shadows for the shadow clock? (a) needed (b) not needed
  40. 40.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is what we measure. (a) True (b) False

Answer key

  1. False
  2. False
  3. a straight stick
  4. yeast
  5. True
  6. True
  7. turmeric powder
  8. long
  9. False
  10. a mirror
  11. we keep it the same
  12. an object blocks light
  13. a cap or hat
  14. True
  15. False
  16. Earth keeps spinning
  17. False
  18. opaque
  19. we measure it
  20. a balloon
  21. True
  22. a clock to check
  23. False
  24. chalk to mark shadows
  25. translucent
  26. butter paper
  27. translucent
  28. look straight at the Sun
  29. True
  30. True
  31. does not work well
  32. around noon
  33. shadow length
  34. True
  35. True
  36. True
  37. True
  38. False
  39. needed
  40. False

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