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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 754 · 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.🔦 Which of these is translucent? (a) your hand (b) a wooden board (c) oily paper (d) a brick
  2. 2.⚖️ 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
  3. 3.🌞 When is a stick’s shadow the shortest? (a) early morning (b) at night (c) late evening (d) around noon
  4. 4.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a clock to check (c) a sunny open place (d) turmeric powder
  5. 5.True or false: turmeric powder is not needed for the shadow clock. (a) True (b) False
  6. 6.True or false: tissue paper is transparent. (a) True (b) False
  7. 7.True or false: frosted glass is transparent. (a) True (b) False
  8. 8.⚖️ 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) True (b) False
  9. 9.True or false: a brick is opaque. (a) False (b) True
  10. 10.True or false: a sunny open place is needed for the shadow clock. (a) True (b) False
  11. 11.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a battery cell (b) a clock to check (c) a straight stick (d) chalk to mark shadows
  12. 12.⚖️ 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) True (b) False
  13. 13.True or false: a book is opaque. (a) False (b) True
  14. 14.🛟 While watching shadows outdoors, what must you never do? (a) mark with chalk (b) look straight at the Sun (c) wear a cap (d) sit in the shade
  15. 15.📘 Why does a shadow form? (a) the object is cold (b) an object blocks light (c) the ground is dark (d) light bends round it
  16. 16.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) long (b) missing (c) short (d) round
  17. 17.🧺 Do we need a sunny open place for the shadow clock? (a) needed (b) not needed
  18. 18.⚖️ 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
  19. 19.🧺 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) a sunny open place (d) a balloon
  20. 20.🔍 Which is the odd one out? (a) clean water (b) clear plastic film (c) a book (d) clear glass
  21. 21.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a magnet (b) a straight stick (c) a sunny open place (d) chalk to mark shadows
  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 stick kept upright (b) shadow length (c) the time of day (d) the same spot
  23. 23.🔍 Which is the odd one out? (a) a brick (b) a wooden board (c) a book (d) clean water
  24. 24.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is the one thing we change. (a) True (b) False
  25. 25.🧺 Which of these is needed for the shadow clock? (a) a mirror (b) yeast (c) chalk to mark shadows (d) a battery cell
  26. 26.True or false: a brick is translucent. (a) True (b) False
  27. 27.True or false: a magnet is not needed for the shadow clock. (a) False (b) True
  28. 28.True or false: a mirror is needed for the shadow clock. (a) True (b) False
  29. 29.True or false: a steel plate is opaque. (a) False (b) True
  30. 30.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) coloured (b) brighter (c) bigger (d) smaller
  31. 31.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a balloon (c) a straight stick (d) a sunny open place
  32. 32.🔦 Is a book opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
  33. 33.🔦 Is tissue paper opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
  34. 34.🔮 Predict: on a fully cloudy day, the sundial ___. (a) runs faster (b) works better (c) does not work well (d) shows two times
  35. 35.🧺 Which of these is needed for the shadow clock? (a) a mirror (b) yeast (c) a clock to check (d) a balloon
  36. 36.⚖️ 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
  37. 37.⚖️ 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) False (b) True
  38. 38.🔍 Which is the odd one out? (a) air (b) clean water (c) clear plastic film (d) a brick
  39. 39.🔍 Which is the odd one out? (a) oily paper (b) a steel plate (c) a brick (d) a book
  40. 40.True or false: butter paper is translucent. (a) True (b) False

Answer key

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

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