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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 555 · 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.True or false: a straight stick is not needed for the shadow clock. (a) True (b) False
  2. 2.True or false: a steel plate is translucent. (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 spot
  4. 4.📘 Why does a shadow form? (a) the ground is dark (b) light bends round it (c) the object is cold (d) an object blocks light
  5. 5.True or false: clean water is opaque. (a) False (b) True
  6. 6.🧺 Do we need chalk to mark shadows for the shadow clock? (a) not needed (b) needed
  7. 7.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a battery cell (c) a sunny open place (d) a straight stick
  8. 8.🧺 Which of these is needed for the shadow clock? (a) a battery cell (b) a magnet (c) turmeric powder (d) a straight stick
  9. 9.⚖️ 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 stick kept upright
  10. 10.⚖️ 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 keep it the same (c) we change it
  11. 11.🧺 Do we need a mirror for the shadow clock? (a) not needed (b) needed
  12. 12.True or false: a mirror is not needed for the shadow clock. (a) False (b) True
  13. 13.⚖️ 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
  14. 14.True or false: a brick is opaque. (a) True (b) False
  15. 15.🛟 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
  16. 16.🔍 Which is the odd one out? (a) your hand (b) air (c) clean water (d) clear plastic film
  17. 17.True or false: chalk to mark shadows is not needed for the shadow clock. (a) False (b) True
  18. 18.🔦 Which of these is translucent? (a) a wooden board (b) butter paper (c) clean water (d) a book
  19. 19.🛟 What should you wear for a long time in the hot sun? (a) a woollen sweater (b) a raincoat (c) a cap or hat (d) nothing on your head
  20. 20.🌞 When is a stick’s shadow the shortest? (a) at night (b) around noon (c) late evening (d) early morning
  21. 21.🌍 Why does the stick’s shadow move during the day? (a) the ground slides (b) Earth keeps spinning (c) the stick walks (d) the stick grows
  22. 22.🔍 Which is the odd one out? (a) tissue paper (b) a book (c) a steel plate (d) a wooden board
  23. 23.🔦 Is a wooden board opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
  24. 24.🔦 Is a book opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
  25. 25.🔦 Is clean water opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
  26. 26.True or false: tissue paper is translucent. (a) False (b) True
  27. 27.🧺 Do we need a battery cell for the shadow clock? (a) needed (b) not needed
  28. 28.True or false: a mirror is needed for the shadow clock. (a) False (b) True
  29. 29.🧺 Which of these is needed for the shadow clock? (a) a battery cell (b) a magnet (c) chalk to mark shadows (d) a mirror
  30. 30.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “shadow length”? (a) we keep it the same (b) we measure it (c) we change it
  31. 31.🔍 Which is the odd one out? (a) a wooden board (b) frosted glass (c) a brick (d) your hand
  32. 32.True or false: butter paper is translucent. (a) True (b) False
  33. 33.🧺 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 balloon (d) a sunny open place
  34. 34.🔮 Predict: on a fully cloudy day, the sundial ___. (a) works better (b) shows two times (c) does not work well (d) runs faster
  35. 35.🔦 Is clear plastic film opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
  36. 36.🔍 Which is the odd one out? (a) your hand (b) clear plastic film (c) a book (d) a steel plate
  37. 37.🔦 Is clear glass opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
  38. 38.🔦 Is tissue paper opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
  39. 39.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) brighter (b) coloured (c) smaller (d) bigger
  40. 40.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a battery cell (c) a sunny open place (d) a clock to check

Answer key

  1. False
  2. False
  3. the time of day
  4. an object blocks light
  5. False
  6. needed
  7. a battery cell
  8. a straight stick
  9. the stick kept upright
  10. we keep it the same
  11. not needed
  12. True
  13. True
  14. True
  15. look straight at the Sun
  16. your hand
  17. False
  18. butter paper
  19. a cap or hat
  20. around noon
  21. Earth keeps spinning
  22. tissue paper
  23. opaque
  24. opaque
  25. transparent
  26. True
  27. not needed
  28. False
  29. chalk to mark shadows
  30. we measure it
  31. frosted glass
  32. True
  33. a balloon
  34. does not work well
  35. transparent
  36. clear plastic film
  37. transparent
  38. translucent
  39. bigger
  40. a battery cell

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