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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 502 · 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.

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  1. 1.🧺 Do we need a magnet for the shadow clock? (a) needed (b) not needed
  2. 2.🛟 What should you wear for a long time in the hot sun? (a) nothing on your head (b) a raincoat (c) a cap or hat (d) a woollen sweater
  3. 3.🧺 Do we need a balloon for the shadow clock? (a) needed (b) not needed
  4. 4.🧺 Which of these is needed for the shadow clock? (a) turmeric powder (b) yeast (c) a straight stick (d) a balloon
  5. 5.🔦 Is air opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
  6. 6.🧺 Which of these is needed for the shadow clock? (a) turmeric powder (b) a sunny open place (c) a magnet (d) a battery cell
  7. 7.🛟 While watching shadows outdoors, what must you never do? (a) wear a cap (b) mark with chalk (c) look straight at the Sun (d) sit in the shade
  8. 8.True or false: a magnet is needed for the shadow clock. (a) True (b) False
  9. 9.🧺 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) a clock to check
  10. 10.🔍 Which is the odd one out? (a) air (b) oily paper (c) butter paper (d) tissue paper
  11. 11.🔦 Is a brick opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
  12. 12.🧺 Do we need chalk to mark shadows for the shadow clock? (a) not needed (b) needed
  13. 13.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) yeast (c) a straight stick (d) chalk to mark shadows
  14. 14.True or false: a brick is translucent. (a) False (b) True
  15. 15.🧺 Do we need a sunny open place for the shadow clock? (a) needed (b) not needed
  16. 16.⚖️ 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
  17. 17.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) east (b) north (c) up (d) west
  18. 18.True or false: turmeric powder is not needed for the shadow clock. (a) False (b) True
  19. 19.🔦 Is clear plastic film opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
  20. 20.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) a straight stick (c) a sunny open place (d) a battery cell
  21. 21.🧺 Which of these is needed for the shadow clock? (a) yeast (b) chalk to mark shadows (c) a battery cell (d) a mirror
  22. 22.🌞 When is a stick’s shadow the shortest? (a) late evening (b) at night (c) early morning (d) around noon
  23. 23.True or false: clean water is transparent. (a) False (b) True
  24. 24.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) the same spot (b) the stick kept upright (c) the time of day (d) shadow length
  25. 25.⚖️ 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
  26. 26.⚖️ 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
  27. 27.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) brighter (b) bigger (c) coloured (d) smaller
  28. 28.🔮 Predict: on a fully cloudy day, the sundial ___. (a) shows two times (b) runs faster (c) works better (d) does not work well
  29. 29.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a mirror (b) chalk to mark shadows (c) a straight stick (d) a clock to check
  30. 30.True or false: your hand is opaque. (a) True (b) False
  31. 31.🔦 Is butter paper opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
  32. 32.🔦 Is a steel plate opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
  33. 33.⚖️ 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
  34. 34.🔍 Which is the odd one out? (a) a brick (b) your hand (c) butter paper (d) a book
  35. 35.🧺 Do we need a battery cell for the shadow clock? (a) not needed (b) needed
  36. 36.🔦 Is a wooden board opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
  37. 37.True or false: a balloon is needed for the shadow clock. (a) False (b) True
  38. 38.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is kept the same. (a) False (b) True
  39. 39.True or false: yeast is needed for the shadow clock. (a) False (b) True
  40. 40.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a straight stick (c) chalk to mark shadows (d) a balloon

Answer key

  1. not needed
  2. a cap or hat
  3. not needed
  4. a straight stick
  5. transparent
  6. a sunny open place
  7. look straight at the Sun
  8. False
  9. a magnet
  10. air
  11. opaque
  12. needed
  13. yeast
  14. False
  15. needed
  16. we keep it the same
  17. west
  18. True
  19. transparent
  20. a battery cell
  21. chalk to mark shadows
  22. around noon
  23. True
  24. the time of day
  25. we keep it the same
  26. the same spot
  27. bigger
  28. does not work well
  29. a mirror
  30. True
  31. translucent
  32. opaque
  33. True
  34. butter paper
  35. not needed
  36. opaque
  37. False
  38. False
  39. False
  40. a balloon

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