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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 121 · 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.🔦 Is clean water opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
  2. 2.🕰️ What is a sundial used for? (a) making rainbows (b) weighing things (c) telling the time (d) measuring rain
  3. 3.True or false: a steel plate is opaque. (a) False (b) True
  4. 4.🔦 Which of these is transparent? (a) a book (b) butter paper (c) a brick (d) clear glass
  5. 5.🧺 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) yeast
  6. 6.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) missing (b) short (c) long (d) round
  7. 7.🛟 While watching shadows outdoors, what must you never do? (a) look straight at the Sun (b) sit in the shade (c) wear a cap (d) mark with chalk
  8. 8.True or false: a sunny open place is not needed for the shadow clock. (a) True (b) False
  9. 9.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) the time of day (b) the same spot (c) the same stick (d) shadow length
  10. 10.🧺 Which of these is needed for the shadow clock? (a) a straight stick (b) a battery cell (c) turmeric powder (d) a balloon
  11. 11.🌞 When is a stick’s shadow the shortest? (a) late evening (b) early morning (c) at night (d) around noon
  12. 12.🔍 Which is the odd one out? (a) a steel plate (b) a wooden board (c) oily paper (d) your hand
  13. 13.🧺 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 clock to check (d) a balloon
  14. 14.True or false: turmeric powder is needed for the shadow clock. (a) True (b) False
  15. 15.🛟 What should you wear for a long time in the hot sun? (a) a woollen sweater (b) a raincoat (c) nothing on your head (d) a cap or hat
  16. 16.⚖️ 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 measure it (c) we change it
  17. 17.🔍 Which is the odd one out? (a) clear glass (b) butter paper (c) clean water (d) air
  18. 18.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) a clock to check (c) a sunny open place (d) a mirror
  19. 19.🔦 Which of these is opaque? (a) a brick (b) clear glass (c) clean water (d) tissue paper
  20. 20.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a magnet (c) a straight stick (d) a sunny open place
  21. 21.True or false: yeast is needed for the shadow clock. (a) True (b) False
  22. 22.True or false: clear glass is transparent. (a) False (b) True
  23. 23.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is what we measure. (a) True (b) False
  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.🔦 Which of these is transparent? (a) a wooden board (b) oily paper (c) air (d) tissue paper
  26. 26.🧺 Do we need chalk to mark shadows for the shadow clock? (a) not needed (b) needed
  27. 27.🧺 Do we need a magnet for the shadow clock? (a) needed (b) not needed
  28. 28.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) the same stick (b) the time of day (c) shadow length
  29. 29.True or false: butter paper is translucent. (a) True (b) False
  30. 30.⚖️ 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) shadow length (c) the same stick (d) the stick kept upright
  31. 31.📘 Why does a shadow form? (a) the object is cold (b) the ground is dark (c) an object blocks light (d) light bends round it
  32. 32.🧺 Do we need a straight stick for the shadow clock? (a) needed (b) not needed
  33. 33.🧺 Do we need a clock to check for the shadow clock? (a) not needed (b) needed
  34. 34.🧺 Do we need yeast for the shadow clock? (a) not needed (b) needed
  35. 35.🔍 Which is the odd one out? (a) frosted glass (b) oily paper (c) air (d) butter paper
  36. 36.🔦 Is butter paper opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
  37. 37.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is the one thing we change. (a) True (b) False
  38. 38.🧺 Which of these is needed for the shadow clock? (a) chalk to mark shadows (b) turmeric powder (c) a balloon (d) a magnet
  39. 39.🔦 Is clear glass opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
  40. 40.🔦 Is a wooden board opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent

Answer key

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

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