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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 910 · 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.⚖️ 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
  2. 2.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) round (b) short (c) long (d) missing
  3. 3.🔦 Is clean water opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
  4. 4.🧺 Which of these is needed for the shadow clock? (a) a mirror (b) yeast (c) a battery cell (d) chalk to mark shadows
  5. 5.🛟 While watching shadows outdoors, what must you never do? (a) sit in the shade (b) look straight at the Sun (c) wear a cap (d) mark with chalk
  6. 6.⚖️ 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) the same stick (d) the same spot
  7. 7.True or false: frosted glass is transparent. (a) True (b) False
  8. 8.True or false: a straight stick is needed for the shadow clock. (a) True (b) False
  9. 9.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a sunny open place (c) a magnet (d) a straight stick
  10. 10.🔦 Which of these is translucent? (a) a book (b) clean water (c) clear plastic film (d) oily paper
  11. 11.🔦 Which of these is translucent? (a) clean water (b) tissue paper (c) clear glass (d) a book
  12. 12.True or false: a magnet is not needed for the shadow clock. (a) True (b) False
  13. 13.True or false: turmeric powder is needed for the shadow clock. (a) True (b) False
  14. 14.🧺 Do we need a balloon for the shadow clock? (a) not needed (b) needed
  15. 15.🔍 Which is the odd one out? (a) air (b) clean water (c) tissue paper (d) clear glass
  16. 16.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the stick kept upright”? (a) we measure it (b) we keep it the same (c) we change it
  17. 17.🔦 Is butter paper opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
  18. 18.🕰️ What is a sundial used for? (a) making rainbows (b) weighing things (c) measuring rain (d) telling the time
  19. 19.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is the one thing we change. (a) False (b) True
  20. 20.🔦 Is clear plastic film opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
  21. 21.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a sunny open place (c) chalk to mark shadows (d) a mirror
  22. 22.True or false: clear plastic film is transparent. (a) True (b) False
  23. 23.True or false: clean water is transparent. (a) False (b) True
  24. 24.🔍 Which is the odd one out? (a) frosted glass (b) a book (c) your hand (d) a wooden board
  25. 25.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) the time of day (b) the same spot (c) the same stick (d) shadow length
  26. 26.🔦 Is your hand opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
  27. 27.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a straight stick (c) a mirror (d) a clock to check
  28. 28.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same spot”? (a) we keep it the same (b) we measure it (c) we change it
  29. 29.True or false: a balloon is not needed for the shadow clock. (a) True (b) False
  30. 30.True or false: butter paper is translucent. (a) True (b) False
  31. 31.🔮 Predict: on a fully cloudy day, the sundial ___. (a) runs faster (b) works better (c) shows two times (d) does not work well
  32. 32.🔦 Is a brick opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
  33. 33.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is kept the same. (a) True (b) False
  34. 34.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) brighter (b) smaller (c) coloured (d) bigger
  35. 35.🔍 Which is the odd one out? (a) clear glass (b) air (c) a brick (d) clean water
  36. 36.True or false: clear plastic film is opaque. (a) False (b) True
  37. 37.🔍 Which is the odd one out? (a) a steel plate (b) a book (c) air (d) a wooden board
  38. 38.🔍 Which is the odd one out? (a) clean water (b) air (c) butter paper (d) clear glass
  39. 39.True or false: turmeric powder is not needed for the shadow clock. (a) True (b) False
  40. 40.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is what we measure. (a) True (b) False

Answer key

  1. False
  2. long
  3. transparent
  4. chalk to mark shadows
  5. look straight at the Sun
  6. the time of day
  7. False
  8. True
  9. a magnet
  10. oily paper
  11. tissue paper
  12. True
  13. False
  14. not needed
  15. tissue paper
  16. we keep it the same
  17. translucent
  18. telling the time
  19. False
  20. transparent
  21. a mirror
  22. True
  23. True
  24. frosted glass
  25. shadow length
  26. opaque
  27. a mirror
  28. we keep it the same
  29. True
  30. True
  31. does not work well
  32. opaque
  33. False
  34. bigger
  35. a brick
  36. False
  37. air
  38. butter paper
  39. True
  40. True

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