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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 782 · 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.🔦 Which of these is translucent? (a) a wooden board (b) clear glass (c) a steel plate (d) butter paper
  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) False (b) True
  3. 3.🧺 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
  4. 4.⚖️ 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 keep it the same (c) we change it
  5. 5.True or false: a sunny open place is needed for the shadow clock. (a) True (b) False
  6. 6.🛟 While watching shadows outdoors, what must you never do? (a) look straight at the Sun (b) sit in the shade (c) mark with chalk (d) wear a cap
  7. 7.🔍 Which is the odd one out? (a) clean water (b) oily paper (c) frosted glass (d) tissue paper
  8. 8.⚖️ 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 measure it (c) we keep it the same
  9. 9.True or false: yeast is needed for the shadow clock. (a) True (b) False
  10. 10.🧺 Do we need a sunny open place for the shadow clock? (a) not needed (b) needed
  11. 11.True or false: clear plastic film is transparent. (a) True (b) False
  12. 12.True or false: air is transparent. (a) True (b) False
  13. 13.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a mirror (b) a sunny open place (c) a clock to check (d) a straight stick
  14. 14.🔦 Which of these is translucent? (a) a steel plate (b) frosted glass (c) clear plastic film (d) air
  15. 15.True or false: your hand is translucent. (a) False (b) True
  16. 16.⚖️ 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) the same stick (c) the same spot (d) the time of day
  17. 17.🔦 Which of these is transparent? (a) a book (b) a wooden board (c) tissue paper (d) clear glass
  18. 18.⚖️ 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
  19. 19.🔍 Which is the odd one out? (a) a brick (b) a steel plate (c) your hand (d) butter paper
  20. 20.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) coloured (b) smaller (c) brighter (d) bigger
  21. 21.🔍 Which is the odd one out? (a) frosted glass (b) tissue paper (c) clear glass (d) oily paper
  22. 22.True or false: a magnet is needed for the shadow clock. (a) False (b) True
  23. 23.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) turmeric powder (b) a clock to check (c) chalk to mark shadows (d) a sunny open place
  24. 24.⚖️ 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 change it (c) we measure it
  25. 25.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the time of day is what we measure. (a) False (b) True
  26. 26.🔍 Which is the odd one out? (a) a steel plate (b) oily paper (c) a book (d) your hand
  27. 27.🌞 When is a stick’s shadow the shortest? (a) late evening (b) around noon (c) at night (d) early morning
  28. 28.🧺 Do we need a mirror for the shadow clock? (a) needed (b) not needed
  29. 29.🧺 Do we need a magnet for the shadow clock? (a) not needed (b) needed
  30. 30.🔦 Which of these is transparent? (a) frosted glass (b) a steel plate (c) clean water (d) oily paper
  31. 31.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) short (b) missing (c) long (d) round
  32. 32.⚖️ 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
  33. 33.True or false: a clock to check is not needed for the shadow clock. (a) True (b) False
  34. 34.⚖️ 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 same stick (c) the time of day (d) shadow length
  35. 35.🔦 Is oily paper opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
  36. 36.🧺 Do we need yeast for the shadow clock? (a) needed (b) not needed
  37. 37.True or false: turmeric powder is needed for the shadow clock. (a) True (b) False
  38. 38.🧺 Do we need a clock to check for the shadow clock? (a) not needed (b) needed
  39. 39.True or false: turmeric powder is not needed for the shadow clock. (a) False (b) True
  40. 40.🧺 Which of these is needed for the shadow clock? (a) a battery cell (b) turmeric powder (c) a straight stick (d) yeast

Answer key

  1. butter paper
  2. True
  3. a balloon
  4. we measure it
  5. True
  6. look straight at the Sun
  7. clean water
  8. we change it
  9. False
  10. needed
  11. True
  12. True
  13. a mirror
  14. frosted glass
  15. False
  16. the time of day
  17. clear glass
  18. True
  19. butter paper
  20. bigger
  21. clear glass
  22. False
  23. turmeric powder
  24. we keep it the same
  25. False
  26. oily paper
  27. around noon
  28. not needed
  29. not needed
  30. clean water
  31. long
  32. True
  33. False
  34. shadow length
  35. translucent
  36. not needed
  37. False
  38. needed
  39. True
  40. a straight stick

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