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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 184 · 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.🛟 While watching shadows outdoors, what must you never do? (a) wear a cap (b) sit in the shade (c) look straight at the Sun (d) mark with chalk
  2. 2.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) turmeric powder (c) a clock to check (d) a sunny open place
  3. 3.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a clock to check (c) a battery cell (d) a straight stick
  4. 4.True or false: tissue paper is opaque. (a) False (b) True
  5. 5.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) the same spot (b) the time of day (c) shadow length
  6. 6.True or false: your hand is opaque. (a) False (b) True
  7. 7.True or false: a mirror is needed for the shadow clock. (a) False (b) True
  8. 8.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a battery cell (c) a sunny open place (d) a clock to check
  9. 9.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the time of day”? (a) we measure it (b) we change it (c) we keep it the same
  10. 10.🔦 Is a book opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
  11. 11.⚖️ 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
  12. 12.🧺 Do we need a clock to check for the shadow clock? (a) not needed (b) needed
  13. 13.🔍 Which is the odd one out? (a) butter paper (b) oily paper (c) frosted glass (d) air
  14. 14.🔦 Which of these is transparent? (a) tissue paper (b) a steel plate (c) your hand (d) clear glass
  15. 15.🔍 Which is the odd one out? (a) a wooden board (b) clear glass (c) air (d) clean water
  16. 16.🧺 Do we need chalk to mark shadows for the shadow clock? (a) not needed (b) needed
  17. 17.⚖️ 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 keep it the same (c) we change it
  18. 18.🔦 Is oily paper opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
  19. 19.True or false: a wooden board is translucent. (a) True (b) False
  20. 20.🔦 Which of these is transparent? (a) a wooden board (b) air (c) a steel plate (d) oily paper
  21. 21.True or false: oily paper is transparent. (a) True (b) False
  22. 22.True or false: butter paper is translucent. (a) False (b) True
  23. 23.True or false: turmeric powder is needed for the shadow clock. (a) False (b) True
  24. 24.🔮 Predict: on a fully cloudy day, the sundial ___. (a) runs faster (b) does not work well (c) shows two times (d) works better
  25. 25.📘 Why does a shadow form? (a) the object is cold (b) the ground is dark (c) an object blocks light (d) light bends round it
  26. 26.🧺 Do we need a sunny open place for the shadow clock? (a) not needed (b) needed
  27. 27.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the stick kept upright is the one thing we change. (a) True (b) False
  28. 28.🔦 Is your hand opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
  29. 29.True or false: a brick is transparent. (a) False (b) True
  30. 30.🔍 Which is the odd one out? (a) clean water (b) clear glass (c) clear plastic film (d) a book
  31. 31.🧺 Which of these is needed for the shadow clock? (a) chalk to mark shadows (b) a magnet (c) turmeric powder (d) a battery cell
  32. 32.True or false: yeast is needed for the shadow clock. (a) True (b) False
  33. 33.True or false: frosted glass is opaque. (a) True (b) False
  34. 34.⚖️ 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
  35. 35.⚖️ 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
  36. 36.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is kept the same. (a) False (b) True
  37. 37.🔦 Is clean water opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
  38. 38.🧺 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) yeast
  39. 39.🧺 Which of these is needed for the shadow clock? (a) turmeric powder (b) a sunny open place (c) a magnet (d) yeast
  40. 40.🌞 When is a stick’s shadow the shortest? (a) around noon (b) late evening (c) early morning (d) at night

Answer key

  1. look straight at the Sun
  2. turmeric powder
  3. a battery cell
  4. False
  5. the same spot
  6. True
  7. False
  8. a battery cell
  9. we change it
  10. opaque
  11. False
  12. needed
  13. air
  14. clear glass
  15. a wooden board
  16. needed
  17. we keep it the same
  18. translucent
  19. False
  20. air
  21. False
  22. True
  23. False
  24. does not work well
  25. an object blocks light
  26. needed
  27. False
  28. opaque
  29. False
  30. a book
  31. chalk to mark shadows
  32. False
  33. False
  34. we measure it
  35. the same stick
  36. True
  37. transparent
  38. yeast
  39. a sunny open place
  40. around noon

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