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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 988 · 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: chalk to mark shadows is needed for the shadow clock. (a) False (b) True
  2. 2.🌞 When is a stick’s shadow the shortest? (a) late evening (b) around noon (c) early morning (d) at night
  3. 3.🛟 What should you wear for a long time in the hot sun? (a) nothing on your head (b) a raincoat (c) a cap or hat (d) a woollen sweater
  4. 4.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) missing (b) short (c) round (d) long
  5. 5.🧺 Which of these is needed for the shadow clock? (a) a magnet (b) a balloon (c) turmeric powder (d) a sunny open place
  6. 6.⚖️ 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
  7. 7.True or false: a sunny open place is needed for the shadow clock. (a) False (b) True
  8. 8.🔦 Is a wooden board opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
  9. 9.🔦 Is a brick opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
  10. 10.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) yeast (c) a clock to check (d) a sunny open place
  11. 11.🧺 Do we need a balloon for the shadow clock? (a) needed (b) not needed
  12. 12.🔦 Is clear plastic film opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
  13. 13.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the stick kept upright”? (a) we change it (b) we keep it the same (c) we measure it
  14. 14.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) chalk to mark shadows (c) a clock to check (d) a balloon
  15. 15.🧺 Do we need chalk to mark shadows for the shadow clock? (a) not needed (b) needed
  16. 16.🔦 Which of these is transparent? (a) a steel plate (b) butter paper (c) a wooden board (d) clear glass
  17. 17.🔦 Is air opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
  18. 18.🔍 Which is the odd one out? (a) oily paper (b) tissue paper (c) butter paper (d) a steel plate
  19. 19.True or false: air is translucent. (a) True (b) False
  20. 20.🧺 Do we need a clock to check for the shadow clock? (a) needed (b) not needed
  21. 21.🔦 Which of these is opaque? (a) clear glass (b) air (c) frosted glass (d) your hand
  22. 22.🕰️ What is a sundial used for? (a) weighing things (b) measuring rain (c) making rainbows (d) telling the time
  23. 23.⚖️ 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 same spot
  24. 24.🧺 Do we need a magnet for the shadow clock? (a) not needed (b) needed
  25. 25.True or false: turmeric powder is not needed for the shadow clock. (a) False (b) True
  26. 26.🔦 Which of these is opaque? (a) clear plastic film (b) air (c) clear glass (d) a steel plate
  27. 27.🔮 Predict: on a fully cloudy day, the sundial ___. (a) shows two times (b) runs faster (c) works better (d) does not work well
  28. 28.🔦 Is your hand opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
  29. 29.📘 Why does a shadow form? (a) an object blocks light (b) the object is cold (c) the ground is dark (d) light bends round it
  30. 30.🧺 Do we need yeast for the shadow clock? (a) not needed (b) needed
  31. 31.True or false: a battery cell is not needed for the shadow clock. (a) True (b) False
  32. 32.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “shadow length”? (a) we change it (b) we measure it (c) we keep it the same
  33. 33.🛟 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
  34. 34.🔍 Which is the odd one out? (a) clear glass (b) clean water (c) clear plastic film (d) a brick
  35. 35.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) the same stick (b) the time of day (c) the same spot (d) shadow length
  36. 36.True or false: butter paper is transparent. (a) False (b) True
  37. 37.🔦 Which of these is translucent? (a) a brick (b) frosted glass (c) your hand (d) clear plastic film
  38. 38.True or false: a mirror 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? Which of these is kept the same? (a) shadow length (b) the time of day (c) the same stick
  40. 40.True or false: a clock to check is needed for the shadow clock. (a) False (b) True

Answer key

  1. True
  2. around noon
  3. a cap or hat
  4. long
  5. a sunny open place
  6. False
  7. True
  8. opaque
  9. opaque
  10. yeast
  11. not needed
  12. transparent
  13. we keep it the same
  14. a balloon
  15. needed
  16. clear glass
  17. transparent
  18. a steel plate
  19. False
  20. needed
  21. your hand
  22. telling the time
  23. the same spot
  24. not needed
  25. True
  26. a steel plate
  27. does not work well
  28. opaque
  29. an object blocks light
  30. not needed
  31. True
  32. we measure it
  33. look straight at the Sun
  34. a brick
  35. shadow length
  36. False
  37. frosted glass
  38. True
  39. the same stick
  40. True

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