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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 352 · 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.🧺 Do we need a balloon for the shadow clock? (a) needed (b) not needed
  2. 2.True or false: a book is opaque. (a) True (b) False
  3. 3.🧺 Do we need a magnet for the shadow clock? (a) not needed (b) needed
  4. 4.🧺 Do we need a mirror for the shadow clock? (a) not needed (b) needed
  5. 5.True or false: turmeric powder is needed for the shadow clock. (a) True (b) False
  6. 6.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) missing (b) round (c) short (d) long
  7. 7.🌞 When is a stick’s shadow the shortest? (a) around noon (b) at night (c) late evening (d) early morning
  8. 8.True or false: a battery cell is needed for the shadow clock. (a) True (b) False
  9. 9.⚖️ 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
  10. 10.🧺 Which of these is needed for the shadow clock? (a) a magnet (b) chalk to mark shadows (c) a balloon (d) yeast
  11. 11.True or false: frosted glass is translucent. (a) True (b) False
  12. 12.🛟 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
  13. 13.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) a battery cell (c) a straight stick (d) a sunny open place
  14. 14.🧺 Which of these is not needed for the shadow clock? (a) turmeric powder (b) chalk to mark shadows (c) a sunny open place (d) a clock to check
  15. 15.🔮 Predict: on a fully cloudy day, the sundial ___. (a) runs faster (b) shows two times (c) does not work well (d) works better
  16. 16.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) shadow length (b) the stick kept upright (c) the same spot (d) the time of day
  17. 17.🔦 Which of these is translucent? (a) clean water (b) butter paper (c) a steel plate (d) a wooden board
  18. 18.🔍 Which is the odd one out? (a) a wooden board (b) tissue paper (c) a book (d) a steel plate
  19. 19.🧺 Which of these is not needed for the shadow clock? (a) a mirror (b) a clock to check (c) a straight stick (d) chalk to mark shadows
  20. 20.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the time of day”? (a) we measure it (b) we change it (c) we keep it the same
  21. 21.⚖️ 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 change it (c) we keep it the same
  22. 22.🔦 Is tissue paper opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
  23. 23.🔦 Is clear glass opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
  24. 24.🧺 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) yeast
  25. 25.🧺 Do we need a clock to check for the shadow clock? (a) not needed (b) needed
  26. 26.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a sunny open place (c) a clock to check (d) a magnet
  27. 27.True or false: clean water is transparent. (a) False (b) True
  28. 28.📘 Why does a shadow form? (a) the object is cold (b) an object blocks light (c) light bends round it (d) the ground is dark
  29. 29.True or false: a straight stick is needed for the shadow clock. (a) False (b) True
  30. 30.🛟 What should you wear for a long time in the hot sun? (a) a cap or hat (b) nothing on your head (c) a raincoat (d) a woollen sweater
  31. 31.True or false: clear glass is transparent. (a) False (b) True
  32. 32.🧺 Do we need a sunny open place for the shadow clock? (a) needed (b) not needed
  33. 33.🧺 Which of these is needed for the shadow clock? (a) a balloon (b) a straight stick (c) turmeric powder (d) a mirror
  34. 34.True or false: your hand is opaque. (a) False (b) True
  35. 35.🔍 Which is the odd one out? (a) your hand (b) a steel plate (c) a brick (d) frosted glass
  36. 36.⚖️ 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 spot
  37. 37.🧺 Which of these is needed for the shadow clock? (a) a balloon (b) a battery cell (c) a mirror (d) a sunny open place
  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.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the stick kept upright”? (a) we keep it the same (b) we change it (c) we measure it
  40. 40.True or false: a magnet is needed for the shadow clock. (a) True (b) False

Answer key

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

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