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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 430 · 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: oily paper is transparent. (a) True (b) False
  2. 2.🧺 Which of these is not needed for the shadow clock? (a) a battery cell (b) a sunny open place (c) a clock to check (d) a straight stick
  3. 3.🔦 Which of these is transparent? (a) a book (b) air (c) a steel plate (d) a brick
  4. 4.True or false: a mirror is not needed for the shadow clock. (a) False (b) True
  5. 5.🕰️ What is a sundial used for? (a) measuring rain (b) weighing things (c) making rainbows (d) telling the time
  6. 6.🛟 While watching shadows outdoors, what must you never do? (a) sit in the shade (b) mark with chalk (c) wear a cap (d) look straight at the Sun
  7. 7.True or false: a battery cell is not needed for the shadow clock. (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 stick kept upright”? (a) we measure it (b) we change it (c) we keep it the same
  9. 9.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a balloon (b) chalk to mark shadows (c) a straight stick (d) a sunny open place
  10. 10.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) up (b) west (c) east (d) north
  11. 11.🧺 Do we need a sunny open place for the shadow clock? (a) not needed (b) needed
  12. 12.🧺 Which of these is needed for the shadow clock? (a) a balloon (b) yeast (c) chalk to mark shadows (d) a battery cell
  13. 13.True or false: a clock to check is needed for the shadow clock. (a) True (b) False
  14. 14.True or false: oily paper is translucent. (a) False (b) True
  15. 15.🔦 Which of these is translucent? (a) clear glass (b) clean water (c) oily paper (d) your hand
  16. 16.🌞 When is a stick’s shadow the shortest? (a) at night (b) late evening (c) early morning (d) around noon
  17. 17.True or false: a sunny open place is not needed for the shadow clock. (a) True (b) False
  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) shadow length (b) the same spot (c) the time of day (d) the stick kept upright
  19. 19.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) missing (b) short (c) long (d) round
  20. 20.⚖️ 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 stick kept upright (c) shadow length (d) the same stick
  21. 21.🔦 Is a wooden board opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
  22. 22.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) smaller (b) brighter (c) coloured (d) bigger
  23. 23.🧺 Do we need turmeric powder for the shadow clock? (a) needed (b) not needed
  24. 24.True or false: chalk to mark shadows is needed for the shadow clock. (a) False (b) True
  25. 25.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the stick kept upright is what we measure. (a) True (b) False
  26. 26.🔮 Predict: on a fully cloudy day, the sundial ___. (a) works better (b) runs faster (c) shows two times (d) does not work well
  27. 27.📘 Why does a shadow form? (a) the ground is dark (b) the object is cold (c) an object blocks light (d) light bends round it
  28. 28.🔦 Is clear glass opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
  29. 29.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) a sunny open place (c) a magnet (d) chalk to mark shadows
  30. 30.⚖️ 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
  31. 31.🔍 Which is the odd one out? (a) a book (b) a wooden board (c) a steel plate (d) air
  32. 32.🔦 Is frosted glass opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
  33. 33.🧺 Do we need chalk to mark shadows for the shadow clock? (a) needed (b) not needed
  34. 34.⚖️ 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 same stick (c) the time of day
  35. 35.⚖️ 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
  36. 36.🔦 Is clear plastic film opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
  37. 37.🔦 Which of these is opaque? (a) oily paper (b) a wooden board (c) frosted glass (d) butter paper
  38. 38.🔦 Which of these is transparent? (a) a book (b) a steel plate (c) tissue paper (d) clean water
  39. 39.🔦 Is a book opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
  40. 40.True or false: a straight stick is not needed for the shadow clock. (a) True (b) False

Answer key

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

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