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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 241 · 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.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is the one thing we change. (a) True (b) False
  2. 2.🔦 Is clean water opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
  3. 3.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is the one thing we change. (a) False (b) True
  4. 4.⚖️ 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
  5. 5.🧺 Do we need a mirror for the shadow clock? (a) not needed (b) needed
  6. 6.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) chalk to mark shadows (c) a clock to check (d) turmeric powder
  7. 7.🧺 Do we need a battery cell for the shadow clock? (a) needed (b) not needed
  8. 8.🧺 Do we need a sunny open place for the shadow clock? (a) needed (b) not needed
  9. 9.🔦 Is frosted glass opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
  10. 10.🧺 Do we need chalk to mark shadows for the shadow clock? (a) needed (b) not needed
  11. 11.⚖️ 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 stick kept upright (c) the time of day
  12. 12.True or false: butter paper is opaque. (a) True (b) False
  13. 13.⚖️ 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
  14. 14.🔦 Which of these is opaque? (a) oily paper (b) clean water (c) a book (d) butter paper
  15. 15.🧺 Which of these is needed for the shadow clock? (a) yeast (b) a straight stick (c) a mirror (d) a battery cell
  16. 16.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a balloon (b) a straight stick (c) a sunny open place (d) a clock to check
  17. 17.True or false: your hand is opaque. (a) False (b) True
  18. 18.True or false: a book is transparent. (a) True (b) False
  19. 19.True or false: a magnet is not needed for the shadow clock. (a) True (b) False
  20. 20.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a straight stick (c) a clock to check (d) a magnet
  21. 21.True or false: a sunny open place is not needed for the shadow clock. (a) False (b) True
  22. 22.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) east (b) west (c) up (d) north
  23. 23.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) the stick kept upright (b) shadow length (c) the same stick (d) the time of day
  24. 24.🧺 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 battery cell (d) a sunny open place
  25. 25.True or false: clear glass is transparent. (a) True (b) False
  26. 26.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is kept the same. (a) True (b) False
  27. 27.🔦 Which of these is translucent? (a) a book (b) a steel plate (c) a wooden board (d) butter paper
  28. 28.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) turmeric powder (c) a straight stick (d) chalk to mark shadows
  29. 29.🕰️ What is a sundial used for? (a) telling the time (b) weighing things (c) making rainbows (d) measuring rain
  30. 30.🔮 Predict: on a fully cloudy day, the sundial ___. (a) shows two times (b) does not work well (c) works better (d) runs faster
  31. 31.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is kept the same. (a) False (b) True
  32. 32.🛟 While watching shadows outdoors, what must you never do? (a) sit in the shade (b) wear a cap (c) mark with chalk (d) look straight at the Sun
  33. 33.🧺 Do we need a magnet for the shadow clock? (a) needed (b) not needed
  34. 34.🛟 What should you wear for a long time in the hot sun? (a) a cap or hat (b) a raincoat (c) a woollen sweater (d) nothing on your head
  35. 35.True or false: yeast is needed for the shadow clock. (a) False (b) True
  36. 36.True or false: yeast is not needed for the shadow clock. (a) True (b) False
  37. 37.🔍 Which is the odd one out? (a) tissue paper (b) frosted glass (c) a book (d) butter paper
  38. 38.True or false: a battery cell is needed for the shadow clock. (a) True (b) False
  39. 39.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is what we measure. (a) True (b) False
  40. 40.📘 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

Answer key

  1. False
  2. transparent
  3. False
  4. True
  5. not needed
  6. turmeric powder
  7. not needed
  8. needed
  9. translucent
  10. needed
  11. the stick kept upright
  12. False
  13. we change it
  14. a book
  15. a straight stick
  16. a balloon
  17. True
  18. False
  19. True
  20. a magnet
  21. False
  22. west
  23. shadow length
  24. a battery cell
  25. True
  26. True
  27. butter paper
  28. turmeric powder
  29. telling the time
  30. does not work well
  31. True
  32. look straight at the Sun
  33. not needed
  34. a cap or hat
  35. False
  36. True
  37. a book
  38. False
  39. True
  40. an object blocks light

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