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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 337 · 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.🔮 Predict: on a fully cloudy day, the sundial ___. (a) does not work well (b) works better (c) shows two times (d) runs faster
  2. 2.🔦 Is butter paper opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
  3. 3.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) short (b) long (c) round (d) missing
  4. 4.🕰️ What is a sundial used for? (a) making rainbows (b) measuring rain (c) weighing things (d) telling the time
  5. 5.🧺 Which of these is needed for the shadow clock? (a) a sunny open place (b) a mirror (c) yeast (d) a battery cell
  6. 6.🔦 Which of these is transparent? (a) a steel plate (b) air (c) a wooden board (d) butter paper
  7. 7.🔦 Which of these is translucent? (a) oily paper (b) air (c) a steel plate (d) clear plastic film
  8. 8.True or false: a wooden board is opaque. (a) False (b) True
  9. 9.🔍 Which is the odd one out? (a) frosted glass (b) tissue paper (c) air (d) oily paper
  10. 10.True or false: a balloon is needed for the shadow clock. (a) True (b) False
  11. 11.True or false: a magnet is needed for the shadow clock. (a) True (b) False
  12. 12.🔦 Is air opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
  13. 13.🔦 Is tissue paper opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
  14. 14.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) chalk to mark shadows (c) a straight stick (d) a mirror
  15. 15.🧺 Do we need a clock to check for the shadow clock? (a) needed (b) not needed
  16. 16.True or false: a wooden board is transparent. (a) False (b) True
  17. 17.🧺 Do we need chalk to mark shadows for the shadow clock? (a) needed (b) not needed
  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) False (b) True
  19. 19.True or false: turmeric powder is needed for the shadow clock. (a) True (b) False
  20. 20.True or false: turmeric powder is not needed for the shadow clock. (a) True (b) False
  21. 21.True or false: a sunny open place is needed for the shadow clock. (a) False (b) True
  22. 22.🌍 Why does the stick’s shadow move during the day? (a) the stick grows (b) the ground slides (c) Earth keeps spinning (d) the stick walks
  23. 23.🛟 While watching shadows outdoors, what must you never do? (a) mark with chalk (b) sit in the shade (c) look straight at the Sun (d) wear a cap
  24. 24.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) east (b) west (c) north (d) up
  25. 25.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the time of day”? (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? What do we do with “the same spot”? (a) we measure it (b) we keep it the same (c) we change it
  27. 27.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a straight stick (c) a battery cell (d) a clock to check
  28. 28.True or false: a clock to check is needed for the shadow clock. (a) True (b) False
  29. 29.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the time of day is kept the same. (a) False (b) True
  30. 30.🔦 Is clean water opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
  31. 31.True or false: yeast is not needed for the shadow clock. (a) False (b) True
  32. 32.🔍 Which is the odd one out? (a) tissue paper (b) frosted glass (c) oily paper (d) a steel plate
  33. 33.🧺 Do we need yeast for the shadow clock? (a) needed (b) not needed
  34. 34.🧺 Which of these is needed for the shadow clock? (a) turmeric powder (b) a magnet (c) a clock to check (d) a balloon
  35. 35.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the stick kept upright is the one thing we change. (a) False (b) True
  36. 36.🌞 When is a stick’s shadow the shortest? (a) around noon (b) at night (c) late evening (d) early morning
  37. 37.🔦 Which of these is opaque? (a) frosted glass (b) oily paper (c) a brick (d) air
  38. 38.🧺 Do we need a sunny open place for the shadow clock? (a) needed (b) not needed
  39. 39.🔍 Which is the odd one out? (a) frosted glass (b) tissue paper (c) clear plastic film (d) butter paper
  40. 40.⚖️ 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) the time of day (c) the same spot (d) shadow length

Answer key

  1. does not work well
  2. translucent
  3. long
  4. telling the time
  5. a sunny open place
  6. air
  7. oily paper
  8. True
  9. air
  10. False
  11. False
  12. transparent
  13. translucent
  14. a mirror
  15. needed
  16. False
  17. needed
  18. True
  19. False
  20. True
  21. True
  22. Earth keeps spinning
  23. look straight at the Sun
  24. west
  25. we change it
  26. we keep it the same
  27. a battery cell
  28. True
  29. False
  30. transparent
  31. True
  32. a steel plate
  33. not needed
  34. a clock to check
  35. False
  36. around noon
  37. a brick
  38. needed
  39. clear plastic film
  40. shadow length

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