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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 57 · 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.🔮 Predict: on a fully cloudy day, the sundial ___. (a) works better (b) runs faster (c) does not work well (d) shows two times
  2. 2.🔦 Which of these is opaque? (a) a steel plate (b) clear plastic film (c) oily paper (d) tissue paper
  3. 3.True or false: a book is opaque. (a) True (b) False
  4. 4.🛟 While watching shadows outdoors, what must you never do? (a) mark with chalk (b) look straight at the Sun (c) sit in the shade (d) wear a cap
  5. 5.True or false: a magnet is needed for the shadow clock. (a) False (b) True
  6. 6.🔦 Is air opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
  7. 7.🔦 Is frosted glass opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
  8. 8.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a sunny open place (c) a clock to check (d) a balloon
  9. 9.🧺 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 clock to check (d) yeast
  10. 10.🌞 When is a stick’s shadow the shortest? (a) late evening (b) at night (c) early morning (d) around noon
  11. 11.🔍 Which is the odd one out? (a) tissue paper (b) clean water (c) oily paper (d) frosted glass
  12. 12.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a clock to check (c) chalk to mark shadows (d) a magnet
  13. 13.🔍 Which is the odd one out? (a) a book (b) a wooden board (c) butter paper (d) a steel plate
  14. 14.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the time of day”? (a) we change it (b) we measure it (c) we keep it the same
  15. 15.🧺 Do we need a straight stick for the shadow clock? (a) needed (b) not needed
  16. 16.True or false: turmeric powder is not needed for the shadow clock. (a) True (b) False
  17. 17.True or false: tissue paper is translucent. (a) True (b) False
  18. 18.🧺 Do we need a sunny open place for the shadow clock? (a) not needed (b) needed
  19. 19.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “shadow length”? (a) we measure it (b) we keep it the same (c) we change it
  20. 20.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is what we measure. (a) False (b) True
  21. 21.🧺 Do we need a mirror for the shadow clock? (a) not needed (b) needed
  22. 22.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) chalk to mark shadows (c) a clock to check (d) a mirror
  23. 23.🛟 What should you wear for a long time in the hot sun? (a) a cap or hat (b) a woollen sweater (c) a raincoat (d) nothing on your head
  24. 24.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) a magnet (c) chalk to mark shadows (d) a clock to check
  25. 25.True or false: a magnet is not needed for the shadow clock. (a) True (b) False
  26. 26.🌍 Why does the stick’s shadow move during the day? (a) the stick walks (b) the ground slides (c) the stick grows (d) Earth keeps spinning
  27. 27.⚖️ 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) True (b) False
  28. 28.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) the stick kept upright (b) the time of day (c) shadow length (d) the same spot
  29. 29.True or false: butter paper is transparent. (a) True (b) False
  30. 30.True or false: a balloon is not needed for the shadow clock. (a) True (b) False
  31. 31.🕰️ What is a sundial used for? (a) measuring rain (b) weighing things (c) telling the time (d) making rainbows
  32. 32.🧺 Do we need chalk to mark shadows for the shadow clock? (a) not needed (b) needed
  33. 33.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the stick kept upright is the one thing we change. (a) True (b) False
  34. 34.🔦 Which of these is transparent? (a) frosted glass (b) a brick (c) tissue paper (d) clean water
  35. 35.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) smaller (b) brighter (c) bigger (d) coloured
  36. 36.True or false: tissue paper is opaque. (a) False (b) True
  37. 37.🧺 Which of these is needed for the shadow clock? (a) a mirror (b) a battery cell (c) a balloon (d) a clock to check
  38. 38.True or false: butter paper is opaque. (a) True (b) False
  39. 39.⚖️ 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
  40. 40.📘 Why does a shadow form? (a) light bends round it (b) an object blocks light (c) the object is cold (d) the ground is dark

Answer key

  1. does not work well
  2. a steel plate
  3. True
  4. look straight at the Sun
  5. False
  6. transparent
  7. translucent
  8. a balloon
  9. yeast
  10. around noon
  11. clean water
  12. a magnet
  13. butter paper
  14. we change it
  15. needed
  16. True
  17. True
  18. needed
  19. we measure it
  20. False
  21. not needed
  22. a mirror
  23. a cap or hat
  24. a magnet
  25. True
  26. Earth keeps spinning
  27. False
  28. the time of day
  29. False
  30. True
  31. telling the time
  32. needed
  33. False
  34. clean water
  35. bigger
  36. False
  37. a clock to check
  38. False
  39. True
  40. an object blocks light

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