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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 351 · 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? What do we do with “the same spot”? (a) we keep it the same (b) we measure it (c) we change it
  2. 2.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is kept the same. (a) True (b) False
  3. 3.⚖️ 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 stick kept upright (c) shadow length (d) the same stick
  4. 4.🔦 Is tissue paper opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
  5. 5.⚖️ 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) False (b) True
  6. 6.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) a mirror (c) a straight stick (d) a sunny open place
  7. 7.🔍 Which is the odd one out? (a) a book (b) butter paper (c) your hand (d) a wooden board
  8. 8.📘 Why does a shadow form? (a) an object blocks light (b) light bends round it (c) the object is cold (d) the ground is dark
  9. 9.🌞 When is a stick’s shadow the shortest? (a) late evening (b) around noon (c) early morning (d) at night
  10. 10.🔍 Which is the odd one out? (a) a book (b) air (c) a wooden board (d) your hand
  11. 11.🛟 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
  12. 12.True or false: a balloon is needed for the shadow clock. (a) True (b) False
  13. 13.True or false: a sunny open place is not needed for the shadow clock. (a) True (b) False
  14. 14.🔦 Is a book opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
  15. 15.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) turmeric powder (b) a straight stick (c) chalk to mark shadows (d) a clock to check
  16. 16.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) the same stick (b) shadow length (c) the stick kept upright (d) the time of day
  17. 17.🧺 Do we need a sunny open place for the shadow clock? (a) needed (b) not needed
  18. 18.🧺 Do we need a magnet for the shadow clock? (a) needed (b) not needed
  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 straight stick (d) a battery cell
  20. 20.🧺 Do we need a mirror for the shadow clock? (a) not needed (b) needed
  21. 21.True or false: a steel plate is translucent. (a) True (b) False
  22. 22.🧺 Do we need a straight stick for the shadow clock? (a) not needed (b) needed
  23. 23.True or false: a straight stick is not needed for the shadow clock. (a) True (b) False
  24. 24.🔦 Which of these is translucent? (a) clean water (b) clear glass (c) oily paper (d) your hand
  25. 25.🧺 Do we need yeast for the shadow clock? (a) needed (b) not needed
  26. 26.🛟 What should you wear for a long time in the hot sun? (a) a woollen sweater (b) nothing on your head (c) a cap or hat (d) a raincoat
  27. 27.True or false: clear glass is opaque. (a) True (b) False
  28. 28.⚖️ 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
  29. 29.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) smaller (b) brighter (c) coloured (d) bigger
  30. 30.🔦 Is butter paper opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
  31. 31.🔮 Predict: on a fully cloudy day, the sundial ___. (a) shows two times (b) runs faster (c) works better (d) does not work well
  32. 32.True or false: air is opaque. (a) True (b) False
  33. 33.⚖️ 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
  34. 34.True or false: yeast is needed for the shadow clock. (a) True (b) False
  35. 35.🔦 Which of these is transparent? (a) a book (b) butter paper (c) frosted glass (d) air
  36. 36.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) a balloon (c) a straight stick (d) a sunny open place
  37. 37.🔍 Which is the odd one out? (a) your hand (b) a wooden board (c) a book (d) oily paper
  38. 38.⚖️ 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) shadow length (c) the same stick
  39. 39.True or false: your hand is opaque. (a) True (b) False
  40. 40.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) a magnet (c) chalk to mark shadows (d) a straight stick

Answer key

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

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