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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 481 · 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.🔍 Which is the odd one out? (a) a brick (b) clear plastic film (c) clear glass (d) clean water
  2. 2.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the time of day”? (a) we measure it (b) we keep it the same (c) we change it
  3. 3.🕰️ What is a sundial used for? (a) weighing things (b) telling the time (c) making rainbows (d) measuring rain
  4. 4.🧺 Do we need turmeric powder for the shadow clock? (a) needed (b) not needed
  5. 5.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same stick”? (a) we keep it the same (b) we change it (c) we measure it
  6. 6.🧺 Which of these is needed for the shadow clock? (a) chalk to mark shadows (b) a battery cell (c) a mirror (d) a magnet
  7. 7.True or false: a battery cell is not needed for the shadow clock. (a) False (b) True
  8. 8.⚖️ 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
  9. 9.True or false: oily paper is translucent. (a) False (b) True
  10. 10.🌞 When is a stick’s shadow the shortest? (a) late evening (b) around noon (c) early morning (d) at night
  11. 11.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the time of day is the one thing we change. (a) True (b) False
  12. 12.🧺 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) chalk to mark shadows (d) a magnet
  13. 13.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the stick kept upright is what we measure. (a) True (b) False
  14. 14.True or false: butter paper is transparent. (a) False (b) True
  15. 15.🔦 Which of these is opaque? (a) air (b) your hand (c) clean water (d) butter paper
  16. 16.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a battery cell (b) chalk to mark shadows (c) a straight stick (d) a sunny open place
  17. 17.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a balloon (c) a clock to check (d) chalk to mark shadows
  18. 18.True or false: a mirror is not needed for the shadow clock. (a) False (b) True
  19. 19.🧺 Do we need a battery cell for the shadow clock? (a) needed (b) not needed
  20. 20.True or false: a clock to check is needed for the shadow clock. (a) True (b) False
  21. 21.True or false: yeast is needed for the shadow clock. (a) True (b) False
  22. 22.🛟 While watching shadows outdoors, what must you never do? (a) look straight at the Sun (b) mark with chalk (c) wear a cap (d) sit in the shade
  23. 23.🔦 Is clear glass opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
  24. 24.🧺 Do we need yeast for the shadow clock? (a) needed (b) not needed
  25. 25.🔍 Which is the odd one out? (a) butter paper (b) clean water (c) frosted glass (d) oily paper
  26. 26.🛟 What should you wear for a long time in the hot sun? (a) a woollen sweater (b) nothing on your head (c) a cap or hat (d) a raincoat
  27. 27.⚖️ 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
  28. 28.📘 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
  29. 29.🔦 Is tissue paper opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
  30. 30.True or false: a mirror is needed for the shadow clock. (a) False (b) True
  31. 31.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a mirror (c) a clock to check (d) a sunny open place
  32. 32.🧺 Do we need a magnet for the shadow clock? (a) needed (b) not needed
  33. 33.🧺 Do we need a balloon for the shadow clock? (a) needed (b) not needed
  34. 34.🔦 Is butter paper opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
  35. 35.True or false: chalk to mark shadows is needed for the shadow clock. (a) True (b) False
  36. 36.⚖️ 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) True (b) False
  37. 37.⚖️ 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 measure it (c) we change it
  38. 38.🧺 Do we need a sunny open place for the shadow clock? (a) not needed (b) needed
  39. 39.🔮 Predict: on a fully cloudy day, the sundial ___. (a) does not work well (b) runs faster (c) works better (d) shows two times
  40. 40.🔍 Which is the odd one out? (a) frosted glass (b) tissue paper (c) oily paper (d) a steel plate

Answer key

  1. a brick
  2. we change it
  3. telling the time
  4. not needed
  5. we keep it the same
  6. chalk to mark shadows
  7. True
  8. True
  9. True
  10. around noon
  11. True
  12. a magnet
  13. False
  14. False
  15. your hand
  16. a battery cell
  17. a balloon
  18. True
  19. not needed
  20. True
  21. False
  22. look straight at the Sun
  23. transparent
  24. not needed
  25. clean water
  26. a cap or hat
  27. the same stick
  28. an object blocks light
  29. translucent
  30. False
  31. a mirror
  32. not needed
  33. not needed
  34. translucent
  35. True
  36. True
  37. we measure it
  38. needed
  39. does not work well
  40. a steel plate

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