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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 791 · 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.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a magnet (b) chalk to mark shadows (c) a clock to check (d) a straight stick
  2. 2.🧺 Which of these is needed for the shadow clock? (a) a mirror (b) a balloon (c) a magnet (d) a clock to check
  3. 3.🔦 Which of these is transparent? (a) a steel plate (b) a wooden board (c) your hand (d) air
  4. 4.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) brighter (b) smaller (c) coloured (d) bigger
  5. 5.True or false: a battery cell is needed for the shadow clock. (a) True (b) False
  6. 6.⚖️ 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
  7. 7.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) north (b) west (c) up (d) east
  8. 8.🔦 Which of these is translucent? (a) clean water (b) a brick (c) clear plastic film (d) frosted glass
  9. 9.🧺 Do we need a clock to check for the shadow clock? (a) needed (b) not needed
  10. 10.🕰️ What is a sundial used for? (a) measuring rain (b) weighing things (c) making rainbows (d) telling the time
  11. 11.⚖️ 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
  12. 12.⚖️ 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) False (b) True
  13. 13.🧺 Do we need a sunny open place for the shadow clock? (a) needed (b) not needed
  14. 14.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a mirror (b) a clock to check (c) chalk to mark shadows (d) a straight stick
  15. 15.🧺 Do we need a balloon for the shadow clock? (a) needed (b) not needed
  16. 16.🔦 Which of these is translucent? (a) tissue paper (b) air (c) a brick (d) a wooden board
  17. 17.🧺 Do we need a magnet for the shadow clock? (a) not needed (b) needed
  18. 18.🧺 Do we need yeast for the shadow clock? (a) needed (b) not needed
  19. 19.True or false: yeast is not needed for the shadow clock. (a) False (b) True
  20. 20.🌞 When is a stick’s shadow the shortest? (a) late evening (b) early morning (c) around noon (d) at night
  21. 21.🔍 Which is the odd one out? (a) a steel plate (b) butter paper (c) a wooden board (d) a brick
  22. 22.True or false: a sunny open place is needed for the shadow clock. (a) False (b) True
  23. 23.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) short (b) long (c) missing (d) round
  24. 24.🔦 Is a wooden board opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
  25. 25.🧺 Which of these is needed for the shadow clock? (a) turmeric powder (b) a battery cell (c) a straight stick (d) a magnet
  26. 26.True or false: a straight stick is not needed for the shadow clock. (a) True (b) False
  27. 27.True or false: a steel plate is opaque. (a) False (b) True
  28. 28.True or false: a battery cell is not needed for the shadow clock. (a) False (b) True
  29. 29.⚖️ 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 change it (c) we keep it the same
  30. 30.True or false: frosted glass is translucent. (a) False (b) True
  31. 31.🔍 Which is the odd one out? (a) butter paper (b) air (c) oily paper (d) tissue paper
  32. 32.True or false: clear glass is translucent. (a) False (b) True
  33. 33.🔮 Predict: on a fully cloudy day, the sundial ___. (a) works better (b) shows two times (c) runs faster (d) does not work well
  34. 34.True or false: frosted glass is opaque. (a) True (b) False
  35. 35.🧺 Do we need chalk to mark shadows for the shadow clock? (a) needed (b) not needed
  36. 36.🔍 Which is the odd one out? (a) clear plastic film (b) oily paper (c) butter paper (d) frosted glass
  37. 37.🔦 Is oily paper opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
  38. 38.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) the time of day (b) the same spot (c) the same stick (d) shadow length
  39. 39.True or false: a clock to check is needed for the shadow clock. (a) False (b) True
  40. 40.True or false: clear glass is transparent. (a) False (b) True

Answer key

  1. a magnet
  2. a clock to check
  3. air
  4. bigger
  5. False
  6. the same spot
  7. west
  8. frosted glass
  9. needed
  10. telling the time
  11. False
  12. False
  13. needed
  14. a mirror
  15. not needed
  16. tissue paper
  17. not needed
  18. not needed
  19. True
  20. around noon
  21. butter paper
  22. True
  23. long
  24. opaque
  25. a straight stick
  26. False
  27. True
  28. True
  29. we measure it
  30. True
  31. air
  32. False
  33. does not work well
  34. False
  35. needed
  36. clear plastic film
  37. translucent
  38. the time of day
  39. True
  40. True

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