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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 577 · 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.True or false: tissue paper is translucent. (a) True (b) False
  2. 2.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) yeast (c) chalk to mark shadows (d) a straight stick
  3. 3.⚖️ 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) True (b) False
  4. 4.🔦 Is a steel plate opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
  5. 5.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same spot”? (a) we change it (b) we measure it (c) we keep it the same
  6. 6.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a sunny open place (c) a straight stick (d) a mirror
  7. 7.🧺 Do we need a sunny open place for the shadow clock? (a) needed (b) not needed
  8. 8.True or false: your hand is transparent. (a) True (b) False
  9. 9.🧺 Do we need a clock to check for the shadow clock? (a) needed (b) not needed
  10. 10.🧺 Which of these is not needed for the shadow clock? (a) a clock to check (b) turmeric powder (c) a sunny open place (d) a straight stick
  11. 11.True or false: clean water is transparent. (a) True (b) False
  12. 12.⚖️ 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 same stick (c) the same spot (d) shadow length
  13. 13.🔦 Which of these is opaque? (a) air (b) clear glass (c) frosted glass (d) your hand
  14. 14.⚖️ 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 spot (c) the stick kept upright (d) the same stick
  15. 15.⚖️ 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
  16. 16.🛟 While watching shadows outdoors, what must you never do? (a) sit in the shade (b) look straight at the Sun (c) mark with chalk (d) wear a cap
  17. 17.🔦 Is a book opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
  18. 18.⚖️ 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
  19. 19.🔦 Is frosted glass opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
  20. 20.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “shadow length”? (a) we change it (b) we keep it the same (c) we measure it
  21. 21.🔦 Which of these is opaque? (a) clear glass (b) frosted glass (c) clean water (d) a wooden board
  22. 22.True or false: a straight stick is needed for the shadow clock. (a) True (b) False
  23. 23.🔍 Which is the odd one out? (a) tissue paper (b) frosted glass (c) oily paper (d) clean water
  24. 24.True or false: a magnet is needed for the shadow clock. (a) True (b) False
  25. 25.⚖️ 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) False (b) True
  26. 26.🔮 Predict: on a fully cloudy day, the sundial ___. (a) runs faster (b) works better (c) does not work well (d) shows two times
  27. 27.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the stick kept upright is kept the same. (a) False (b) True
  28. 28.🧺 Do we need a battery cell for the shadow clock? (a) needed (b) not needed
  29. 29.🧺 Which of these is not needed for the shadow clock? (a) a clock to check (b) a sunny open place (c) yeast (d) a straight stick
  30. 30.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) round (b) short (c) long (d) missing
  31. 31.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) chalk to mark shadows (c) a sunny open place (d) a battery cell
  32. 32.🧺 Which of these is needed for the shadow clock? (a) a mirror (b) a magnet (c) a clock to check (d) a battery cell
  33. 33.🧺 Do we need a mirror for the shadow clock? (a) not needed (b) needed
  34. 34.True or false: a book is translucent. (a) False (b) True
  35. 35.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) smaller (b) coloured (c) bigger (d) brighter
  36. 36.True or false: butter paper is translucent. (a) True (b) False
  37. 37.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) a balloon (c) chalk to mark shadows (d) a sunny open place
  38. 38.True or false: chalk to mark shadows is needed for the shadow clock. (a) False (b) True
  39. 39.🔦 Is clear plastic film opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
  40. 40.True or false: yeast is needed for the shadow clock. (a) False (b) True

Answer key

  1. True
  2. yeast
  3. False
  4. opaque
  5. we keep it the same
  6. a mirror
  7. needed
  8. False
  9. needed
  10. turmeric powder
  11. True
  12. the time of day
  13. your hand
  14. shadow length
  15. we keep it the same
  16. look straight at the Sun
  17. opaque
  18. True
  19. translucent
  20. we measure it
  21. a wooden board
  22. True
  23. clean water
  24. False
  25. False
  26. does not work well
  27. True
  28. not needed
  29. yeast
  30. long
  31. a battery cell
  32. a clock to check
  33. not needed
  34. False
  35. bigger
  36. True
  37. a balloon
  38. True
  39. transparent
  40. False

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