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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 661 · 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.🕰️ What is a sundial used for? (a) telling the time (b) weighing things (c) making rainbows (d) measuring rain
  2. 2.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a battery cell (c) chalk to mark shadows (d) a sunny open place
  3. 3.🛟 What should you wear for a long time in the hot sun? (a) a woollen sweater (b) nothing on your head (c) a raincoat (d) a cap or hat
  4. 4.🧺 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) yeast
  5. 5.🧺 Which of these is needed for the shadow clock? (a) a balloon (b) yeast (c) a straight stick (d) a magnet
  6. 6.True or false: a balloon is not needed for the shadow clock. (a) False (b) True
  7. 7.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same spot”? (a) we measure it (b) we change it (c) we keep it the same
  8. 8.🔦 Which of these is translucent? (a) a wooden board (b) a brick (c) butter paper (d) a steel plate
  9. 9.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is kept the same. (a) True (b) False
  10. 10.🔦 Is a book opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
  11. 11.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) a clock to check (c) a straight stick (d) a magnet
  12. 12.🔦 Which of these is opaque? (a) clean water (b) frosted glass (c) a wooden board (d) air
  13. 13.True or false: a steel plate is translucent. (a) False (b) True
  14. 14.🔦 Which of these is opaque? (a) clean water (b) air (c) your hand (d) oily paper
  15. 15.🧺 Do we need a straight stick for the shadow clock? (a) needed (b) not needed
  16. 16.🧺 Do we need a mirror for the shadow clock? (a) needed (b) not needed
  17. 17.True or false: a magnet is not needed for the shadow clock. (a) True (b) False
  18. 18.🌞 When is a stick’s shadow the shortest? (a) early morning (b) at night (c) late evening (d) around noon
  19. 19.🧺 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) a sunny open place
  20. 20.True or false: yeast is not needed for the shadow clock. (a) False (b) True
  21. 21.True or false: a sunny open place is needed for the shadow clock. (a) False (b) True
  22. 22.🔮 Predict: on a fully cloudy day, the sundial ___. (a) does not work well (b) runs faster (c) works better (d) shows two times
  23. 23.🔦 Which of these is transparent? (a) frosted glass (b) air (c) your hand (d) butter paper
  24. 24.🔍 Which is the odd one out? (a) your hand (b) a wooden board (c) clear glass (d) a book
  25. 25.🧺 Which of these is needed for the shadow clock? (a) yeast (b) a mirror (c) chalk to mark shadows (d) turmeric powder
  26. 26.📘 Why does a shadow form? (a) the object is cold (b) light bends round it (c) the ground is dark (d) an object blocks light
  27. 27.🧺 Do we need a magnet for the shadow clock? (a) not needed (b) needed
  28. 28.🔦 Which of these is transparent? (a) butter paper (b) clean water (c) a book (d) a wooden board
  29. 29.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the time of day is kept the same. (a) True (b) False
  30. 30.True or false: chalk to mark shadows is not needed for the shadow clock. (a) False (b) True
  31. 31.🧺 Do we need yeast for the shadow clock? (a) needed (b) not needed
  32. 32.True or false: a magnet is needed for the shadow clock. (a) True (b) False
  33. 33.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) missing (b) short (c) long (d) round
  34. 34.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) the same spot (b) shadow length (c) the time of day
  35. 35.🧺 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 magnet (d) a straight stick
  36. 36.🔦 Which of these is opaque? (a) air (b) butter paper (c) oily paper (d) a brick
  37. 37.🛟 While watching shadows outdoors, what must you never do? (a) sit in the shade (b) mark with chalk (c) wear a cap (d) look straight at the Sun
  38. 38.🧺 Which of these is not needed for the shadow clock? (a) a clock to check (b) chalk to mark shadows (c) a straight stick (d) a mirror
  39. 39.🧺 Do we need chalk to mark shadows for the shadow clock? (a) needed (b) not needed
  40. 40.🔦 Is clear glass opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent

Answer key

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

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