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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 85 · 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.🔦 Is clean water opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
  2. 2.🧺 Do we need a sunny open place for the shadow clock? (a) needed (b) not needed
  3. 3.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same spot”? (a) we change it (b) we measure it (c) we keep it the same
  4. 4.🧺 Do we need turmeric powder for the shadow clock? (a) needed (b) not needed
  5. 5.True or false: a straight stick is needed for the shadow clock. (a) True (b) False
  6. 6.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a battery cell (c) chalk to mark shadows (d) a clock to check
  7. 7.🧺 Do we need a battery cell for the shadow clock? (a) not needed (b) needed
  8. 8.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) a clock to check (c) a magnet (d) a sunny open place
  9. 9.⚖️ 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 time of day (c) the stick kept upright
  10. 10.🧺 Do we need a mirror for the shadow clock? (a) not needed (b) needed
  11. 11.🔍 Which is the odd one out? (a) clean water (b) air (c) oily paper (d) clear plastic film
  12. 12.🔦 Is tissue paper opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
  13. 13.⚖️ 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
  14. 14.🧺 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 straight stick (d) turmeric powder
  15. 15.🧺 Do we need a magnet for the shadow clock? (a) needed (b) not needed
  16. 16.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a straight stick (c) a sunny open place (d) a mirror
  17. 17.🌞 When is a stick’s shadow the shortest? (a) at night (b) early morning (c) around noon (d) late evening
  18. 18.🔍 Which is the odd one out? (a) a steel plate (b) clean water (c) clear glass (d) air
  19. 19.🧺 Which of these is not needed for the shadow clock? (a) turmeric powder (b) a straight stick (c) a sunny open place (d) a clock to check
  20. 20.📘 Why does a shadow form? (a) light bends round it (b) an object blocks light (c) the ground is dark (d) the object is cold
  21. 21.True or false: a brick is opaque. (a) True (b) False
  22. 22.🛟 What should you wear for a long time in the hot sun? (a) a raincoat (b) nothing on your head (c) a woollen sweater (d) a cap or hat
  23. 23.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a clock to check (c) a straight stick (d) a magnet
  24. 24.⚖️ 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
  25. 25.True or false: a wooden board is opaque. (a) True (b) False
  26. 26.🧺 Which of these is needed for the shadow clock? (a) a battery cell (b) a straight stick (c) a mirror (d) a balloon
  27. 27.🌍 Why does the stick’s shadow move during the day? (a) Earth keeps spinning (b) the ground slides (c) the stick walks (d) the stick grows
  28. 28.🔦 Is air opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
  29. 29.🔦 Is a wooden board opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
  30. 30.🧺 Which of these is needed for the shadow clock? (a) a balloon (b) a magnet (c) a mirror (d) chalk to mark shadows
  31. 31.🧺 Do we need yeast for the shadow clock? (a) not needed (b) needed
  32. 32.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) round (b) long (c) missing (d) short
  33. 33.🛟 While watching shadows outdoors, what must you never do? (a) mark with chalk (b) wear a cap (c) look straight at the Sun (d) sit in the shade
  34. 34.True or false: air is opaque. (a) True (b) False
  35. 35.🔦 Which of these is opaque? (a) oily paper (b) clear glass (c) frosted glass (d) a brick
  36. 36.True or false: turmeric powder is not needed for the shadow clock. (a) False (b) True
  37. 37.True or false: a sunny open place is needed for the shadow clock. (a) False (b) True
  38. 38.True or false: a straight stick is not needed for the shadow clock. (a) False (b) True
  39. 39.⚖️ 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 change it (c) we measure it
  40. 40.True or false: chalk to mark shadows is needed for the shadow clock. (a) True (b) False

Answer key

  1. transparent
  2. needed
  3. we keep it the same
  4. not needed
  5. True
  6. a battery cell
  7. not needed
  8. a magnet
  9. the stick kept upright
  10. not needed
  11. oily paper
  12. translucent
  13. False
  14. turmeric powder
  15. not needed
  16. a mirror
  17. around noon
  18. a steel plate
  19. turmeric powder
  20. an object blocks light
  21. True
  22. a cap or hat
  23. a magnet
  24. True
  25. True
  26. a straight stick
  27. Earth keeps spinning
  28. transparent
  29. opaque
  30. chalk to mark shadows
  31. not needed
  32. long
  33. look straight at the Sun
  34. False
  35. a brick
  36. True
  37. True
  38. False
  39. we measure it
  40. True

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