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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 147 · 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? Which of these is kept the same? (a) shadow length (b) the time of day (c) the stick kept upright
  2. 2.True or false: a battery cell is needed for the shadow clock. (a) False (b) True
  3. 3.⚖️ 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
  4. 4.🧺 Do we need a sunny open place for the shadow clock? (a) needed (b) not needed
  5. 5.🔦 Is a wooden board opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
  6. 6.True or false: a magnet is needed for the shadow clock. (a) True (b) False
  7. 7.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) a clock to check (c) yeast (d) a straight stick
  8. 8.True or false: turmeric powder is not needed for the shadow clock. (a) False (b) True
  9. 9.🧺 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) yeast (d) a straight stick
  10. 10.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the stick kept upright”? (a) we change it (b) we keep it the same (c) we measure it
  11. 11.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a magnet (b) a straight stick (c) chalk to mark shadows (d) a clock to check
  12. 12.🔮 Predict: on a fully cloudy day, the sundial ___. (a) shows two times (b) does not work well (c) runs faster (d) works better
  13. 13.🔦 Which of these is translucent? (a) your hand (b) clear glass (c) clean water (d) frosted glass
  14. 14.🔦 Is a steel plate opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
  15. 15.🔦 Is clear glass opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
  16. 16.True or false: yeast is needed for the shadow clock. (a) False (b) True
  17. 17.🧺 Which of these is not needed for the shadow clock? (a) a magnet (b) a clock to check (c) chalk to mark shadows (d) a straight stick
  18. 18.🧺 Do we need a clock to check for the shadow clock? (a) not needed (b) needed
  19. 19.🧺 Do we need a mirror for the shadow clock? (a) needed (b) not needed
  20. 20.📘 Why does a shadow form? (a) light bends round it (b) the ground is dark (c) an object blocks light (d) the object is cold
  21. 21.🛟 While watching shadows outdoors, what must you never do? (a) mark with chalk (b) sit in the shade (c) wear a cap (d) look straight at the Sun
  22. 22.⚖️ 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) shadow length (d) the time of day
  23. 23.🔦 Which of these is transparent? (a) butter paper (b) frosted glass (c) oily paper (d) air
  24. 24.True or false: a clock to check is needed for the shadow clock. (a) True (b) False
  25. 25.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a clock to check (c) chalk to mark shadows (d) a battery cell
  26. 26.🕰️ What is a sundial used for? (a) weighing things (b) telling the time (c) making rainbows (d) measuring rain
  27. 27.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a mirror (c) a straight stick (d) a clock to check
  28. 28.🔦 Is butter paper opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
  29. 29.🧺 Do we need turmeric powder for the shadow clock? (a) needed (b) not needed
  30. 30.True or false: air is transparent. (a) True (b) False
  31. 31.True or false: a mirror is not needed for the shadow clock. (a) False (b) True
  32. 32.⚖️ 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
  33. 33.🧺 Which of these is needed for the shadow clock? (a) turmeric powder (b) a battery cell (c) yeast (d) a sunny open place
  34. 34.🔦 Which of these is translucent? (a) clear plastic film (b) clean water (c) a wooden board (d) butter paper
  35. 35.🧺 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 clock to check (d) turmeric powder
  36. 36.🔦 Which of these is opaque? (a) air (b) oily paper (c) a steel plate (d) frosted glass
  37. 37.True or false: a sunny open place is needed for the shadow clock. (a) True (b) False
  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 change it (b) we keep it the same (c) we measure it
  39. 39.🔍 Which is the odd one out? (a) oily paper (b) tissue paper (c) air (d) frosted glass
  40. 40.🧺 Do we need a balloon for the shadow clock? (a) needed (b) not needed

Answer key

  1. the stick kept upright
  2. False
  3. True
  4. needed
  5. opaque
  6. False
  7. yeast
  8. True
  9. yeast
  10. we keep it the same
  11. a magnet
  12. does not work well
  13. frosted glass
  14. opaque
  15. transparent
  16. False
  17. a magnet
  18. needed
  19. not needed
  20. an object blocks light
  21. look straight at the Sun
  22. the time of day
  23. air
  24. True
  25. a battery cell
  26. telling the time
  27. a mirror
  28. translucent
  29. not needed
  30. True
  31. True
  32. True
  33. a sunny open place
  34. butter paper
  35. turmeric powder
  36. a steel plate
  37. True
  38. we keep it the same
  39. air
  40. not needed

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