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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 931 · 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: clean water is transparent. (a) False (b) True
  2. 2.🔍 Which is the odd one out? (a) frosted glass (b) your hand (c) tissue paper (d) butter paper
  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.🌞 When is a stick’s shadow the shortest? (a) at night (b) around noon (c) early morning (d) late evening
  5. 5.🧺 Do we need yeast for the shadow clock? (a) needed (b) not needed
  6. 6.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) smaller (b) bigger (c) brighter (d) coloured
  7. 7.🔦 Is a brick opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
  8. 8.🔦 Is tissue paper opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
  9. 9.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) the same stick (b) the time of day (c) shadow length
  10. 10.🛟 While watching shadows outdoors, what must you never do? (a) look straight at the Sun (b) mark with chalk (c) sit in the shade (d) wear a cap
  11. 11.True or false: your hand is opaque. (a) False (b) True
  12. 12.🧺 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 battery cell (d) a straight stick
  13. 13.🧺 Do we need chalk to mark shadows for the shadow clock? (a) needed (b) not needed
  14. 14.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the time of day”? (a) we change it (b) we keep it the same (c) we measure it
  15. 15.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) a straight stick (c) a clock to check (d) yeast
  16. 16.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) round (b) short (c) long (d) missing
  17. 17.🔦 Is clear glass opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
  18. 18.🔦 Which of these is transparent? (a) oily paper (b) air (c) frosted glass (d) your hand
  19. 19.True or false: a sunny open place is not needed for the shadow clock. (a) False (b) True
  20. 20.True or false: a straight stick is not needed for the shadow clock. (a) True (b) False
  21. 21.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a mirror (c) a clock to check (d) chalk to mark shadows
  22. 22.🔍 Which is the odd one out? (a) a book (b) tissue paper (c) oily paper (d) butter paper
  23. 23.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is kept the same. (a) False (b) True
  24. 24.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a battery cell (c) a clock to check (d) a straight stick
  25. 25.True or false: clear glass is translucent. (a) True (b) False
  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? Which of these is kept the same? (a) shadow length (b) the same spot (c) the time of day
  28. 28.🧺 Do we need turmeric powder for the shadow clock? (a) not needed (b) needed
  29. 29.🧺 Do we need a straight stick for the shadow clock? (a) needed (b) not needed
  30. 30.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a sunny open place (c) chalk to mark shadows (d) a magnet
  31. 31.True or false: a battery cell is needed for the shadow clock. (a) False (b) True
  32. 32.⚖️ 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 measure it (c) we keep it the same
  33. 33.True or false: oily paper is transparent. (a) False (b) True
  34. 34.True or false: clean water is opaque. (a) True (b) False
  35. 35.True or false: a sunny open place is needed for the shadow clock. (a) False (b) True
  36. 36.True or false: a balloon is not needed for the shadow clock. (a) True (b) False
  37. 37.⚖️ 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
  38. 38.🔦 Is butter paper opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
  39. 39.True or false: yeast is needed for the shadow clock. (a) False (b) True
  40. 40.📘 Why does a shadow form? (a) an object blocks light (b) the ground is dark (c) light bends round it (d) the object is cold

Answer key

  1. True
  2. your hand
  3. True
  4. around noon
  5. not needed
  6. bigger
  7. opaque
  8. translucent
  9. the same stick
  10. look straight at the Sun
  11. True
  12. a battery cell
  13. needed
  14. we change it
  15. yeast
  16. long
  17. transparent
  18. air
  19. False
  20. False
  21. a mirror
  22. a book
  23. True
  24. a battery cell
  25. False
  26. needed
  27. the same spot
  28. not needed
  29. needed
  30. a magnet
  31. False
  32. we keep it the same
  33. False
  34. False
  35. True
  36. True
  37. True
  38. translucent
  39. False
  40. an object blocks light

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