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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 415 · 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? What do we do with “the time of day”? (a) we measure it (b) we keep it the same (c) we change it
  2. 2.🛟 While watching shadows outdoors, what must you never do? (a) wear a cap (b) look straight at the Sun (c) sit in the shade (d) mark with chalk
  3. 3.True or false: butter paper is transparent. (a) True (b) False
  4. 4.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) smaller (b) bigger (c) brighter (d) coloured
  5. 5.🧺 Do we need a battery cell for the shadow clock? (a) not needed (b) needed
  6. 6.⚖️ 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
  7. 7.True or false: air is transparent. (a) False (b) True
  8. 8.🧺 Which of these is needed for the shadow clock? (a) a battery cell (b) yeast (c) a balloon (d) a clock to check
  9. 9.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) yeast (c) a straight stick (d) a clock to check
  10. 10.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) shadow length (b) the time of day (c) the stick kept upright (d) the same spot
  11. 11.🔮 Predict: on a fully cloudy day, the sundial ___. (a) shows two times (b) does not work well (c) runs faster (d) works better
  12. 12.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) the same spot (b) shadow length (c) the same stick (d) the time of day
  13. 13.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) north (b) east (c) west (d) up
  14. 14.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) chalk to mark shadows (c) a clock to check (d) yeast
  15. 15.🔦 Is butter paper opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
  16. 16.True or false: tissue paper is opaque. (a) True (b) False
  17. 17.🌍 Why does the stick’s shadow move during the day? (a) Earth keeps spinning (b) the ground slides (c) the stick walks (d) the stick grows
  18. 18.True or false: a clock to check is not needed for the shadow clock. (a) True (b) False
  19. 19.🧺 Which of these is needed for the shadow clock? (a) a battery cell (b) a straight stick (c) a mirror (d) a magnet
  20. 20.🧺 Do we need a magnet for the shadow clock? (a) needed (b) not needed
  21. 21.🔍 Which is the odd one out? (a) clear plastic film (b) air (c) clean water (d) a steel plate
  22. 22.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a straight stick (c) chalk to mark shadows (d) a balloon
  23. 23.🔍 Which is the odd one out? (a) your hand (b) clean water (c) a brick (d) a steel plate
  24. 24.🌞 When is a stick’s shadow the shortest? (a) early morning (b) late evening (c) at night (d) around noon
  25. 25.🧺 Which of these is needed for the shadow clock? (a) a balloon (b) a mirror (c) a sunny open place (d) a battery cell
  26. 26.🧺 Which of these is needed for the shadow clock? (a) a battery cell (b) yeast (c) a balloon (d) chalk to mark shadows
  27. 27.True or false: clear glass is opaque. (a) False (b) True
  28. 28.🔦 Is your hand opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
  29. 29.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a sunny open place (c) a straight stick (d) turmeric powder
  30. 30.True or false: chalk to mark shadows is not needed for the shadow clock. (a) False (b) True
  31. 31.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the stick kept upright”? (a) we keep it the same (b) we measure it (c) we change it
  32. 32.📘 Why does a shadow form? (a) the ground is dark (b) the object is cold (c) an object blocks light (d) light bends round it
  33. 33.True or false: frosted glass is translucent. (a) True (b) False
  34. 34.True or false: chalk to mark shadows is needed for the shadow clock. (a) True (b) False
  35. 35.🔦 Which of these is translucent? (a) a wooden board (b) tissue paper (c) clear plastic film (d) a steel plate
  36. 36.True or false: oily paper is translucent. (a) True (b) False
  37. 37.🔍 Which is the odd one out? (a) tissue paper (b) oily paper (c) frosted glass (d) a book
  38. 38.🔦 Which of these is translucent? (a) butter paper (b) your hand (c) a steel plate (d) clear plastic film
  39. 39.True or false: a sunny open place is needed for the shadow clock. (a) False (b) True
  40. 40.🧺 Do we need chalk to mark shadows for the shadow clock? (a) not needed (b) needed

Answer key

  1. we change it
  2. look straight at the Sun
  3. False
  4. bigger
  5. not needed
  6. True
  7. True
  8. a clock to check
  9. yeast
  10. the time of day
  11. does not work well
  12. shadow length
  13. west
  14. yeast
  15. translucent
  16. False
  17. Earth keeps spinning
  18. False
  19. a straight stick
  20. not needed
  21. a steel plate
  22. a balloon
  23. clean water
  24. around noon
  25. a sunny open place
  26. chalk to mark shadows
  27. False
  28. opaque
  29. turmeric powder
  30. False
  31. we keep it the same
  32. an object blocks light
  33. True
  34. True
  35. tissue paper
  36. True
  37. a book
  38. butter paper
  39. True
  40. needed

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