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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 35 · 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) look straight at the Sun (b) sit in the shade (c) mark with chalk (d) wear a cap
  2. 2.True or false: a sunny open place is needed for the shadow clock. (a) True (b) False
  3. 3.🔦 Is your hand opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
  4. 4.⚖️ 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
  5. 5.🔮 Predict: on a fully cloudy day, the sundial ___. (a) works better (b) runs faster (c) does not work well (d) shows two times
  6. 6.True or false: a battery cell is not needed for the shadow clock. (a) True (b) False
  7. 7.True or false: your hand is translucent. (a) False (b) True
  8. 8.⚖️ 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 change it (c) we keep it the same
  9. 9.⚖️ 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 keep it the same (c) we change it
  10. 10.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) coloured (b) smaller (c) brighter (d) bigger
  11. 11.🧺 Which of these is not needed for the shadow clock? (a) a battery cell (b) a straight stick (c) a sunny open place (d) a clock to check
  12. 12.True or false: clean water is transparent. (a) False (b) True
  13. 13.📘 Why does a shadow form? (a) an object blocks light (b) the object is cold (c) the ground is dark (d) light bends round it
  14. 14.True or false: chalk to mark shadows is not needed for the shadow clock. (a) False (b) True
  15. 15.True or false: a wooden board is transparent. (a) False (b) True
  16. 16.True or false: turmeric powder is not needed for the shadow clock. (a) True (b) False
  17. 17.⚖️ 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 same stick
  18. 18.⚖️ 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 stick kept upright (d) shadow length
  19. 19.True or false: butter paper is opaque. (a) True (b) False
  20. 20.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a balloon (b) a sunny open place (c) a straight stick (d) a clock to check
  21. 21.True or false: air is translucent. (a) False (b) True
  22. 22.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “shadow length”? (a) we measure it (b) we change it (c) we keep it the same
  23. 23.🔦 Is a wooden board opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
  24. 24.🔦 Which of these is opaque? (a) clear glass (b) a wooden board (c) frosted glass (d) butter paper
  25. 25.🧺 Do we need chalk to mark shadows for the shadow clock? (a) needed (b) not needed
  26. 26.🕰️ What is a sundial used for? (a) telling the time (b) making rainbows (c) measuring rain (d) weighing things
  27. 27.True or false: clear glass is transparent. (a) False (b) True
  28. 28.⚖️ 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 measure it (c) we keep it the same
  29. 29.🔦 Is clear plastic film opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
  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) True (b) False
  31. 31.🔦 Is tissue paper opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
  32. 32.True or false: your hand is transparent. (a) False (b) True
  33. 33.🔍 Which is the odd one out? (a) butter paper (b) a book (c) a steel plate (d) your hand
  34. 34.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a magnet (c) a sunny open place (d) a straight stick
  35. 35.🧺 Do we need a sunny open place for the shadow clock? (a) not needed (b) needed
  36. 36.🧺 Do we need a balloon for the shadow clock? (a) needed (b) not needed
  37. 37.🔦 Is a book opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
  38. 38.⚖️ 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
  39. 39.🔦 Which of these is translucent? (a) air (b) tissue paper (c) a wooden board (d) clean water
  40. 40.⚖️ 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

Answer key

  1. look straight at the Sun
  2. True
  3. opaque
  4. True
  5. does not work well
  6. True
  7. False
  8. we keep it the same
  9. we keep it the same
  10. bigger
  11. a battery cell
  12. True
  13. an object blocks light
  14. False
  15. False
  16. True
  17. the same stick
  18. the time of day
  19. False
  20. a balloon
  21. False
  22. we measure it
  23. opaque
  24. a wooden board
  25. needed
  26. telling the time
  27. True
  28. we keep it the same
  29. transparent
  30. True
  31. translucent
  32. False
  33. butter paper
  34. a magnet
  35. needed
  36. not needed
  37. opaque
  38. False
  39. tissue paper
  40. False

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