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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 537 · 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.True or false: a magnet is not needed for the shadow clock. (a) False (b) True
  2. 2.True or false: your hand is translucent. (a) True (b) False
  3. 3.True or false: yeast is needed for the shadow clock. (a) False (b) True
  4. 4.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same spot”? (a) we change it (b) we keep it the same (c) we measure it
  5. 5.🔦 Which of these is transparent? (a) your hand (b) a wooden board (c) a book (d) air
  6. 6.🔦 Which of these is translucent? (a) air (b) oily paper (c) clear plastic film (d) clean water
  7. 7.True or false: air is translucent. (a) True (b) False
  8. 8.🧺 Which of these is needed for the shadow clock? (a) a battery cell (b) a magnet (c) yeast (d) a straight stick
  9. 9.True or false: frosted glass is transparent. (a) False (b) True
  10. 10.🧺 Do we need a straight stick for the shadow clock? (a) needed (b) not needed
  11. 11.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) smaller (b) bigger (c) coloured (d) brighter
  12. 12.True or false: clear glass is translucent. (a) False (b) True
  13. 13.True or false: butter paper is opaque. (a) True (b) False
  14. 14.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the time of day is what we measure. (a) True (b) False
  15. 15.🌍 Why does the stick’s shadow move during the day? (a) the stick grows (b) the ground slides (c) Earth keeps spinning (d) the stick walks
  16. 16.⚖️ 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) True (b) False
  17. 17.🧺 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
  18. 18.🔮 Predict: on a fully cloudy day, the sundial ___. (a) shows two times (b) works better (c) does not work well (d) runs faster
  19. 19.🔦 Is your hand opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
  20. 20.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) yeast (c) chalk to mark shadows (d) a sunny open place
  21. 21.🛟 While watching shadows outdoors, what must you never do? (a) sit in the shade (b) wear a cap (c) look straight at the Sun (d) mark with chalk
  22. 22.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) chalk to mark shadows (c) turmeric powder (d) a straight stick
  23. 23.🔦 Is oily paper opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
  24. 24.🧺 Do we need a sunny open place for the shadow clock? (a) not needed (b) needed
  25. 25.True or false: a magnet is needed for the shadow clock. (a) True (b) False
  26. 26.⚖️ 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) False (b) True
  27. 27.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) the same spot (b) the time of day (c) the stick kept upright (d) the same stick
  28. 28.🌞 When is a stick’s shadow the shortest? (a) late evening (b) at night (c) around noon (d) early morning
  29. 29.🔦 Which of these is translucent? (a) air (b) frosted glass (c) clean water (d) clear plastic film
  30. 30.True or false: a steel plate is opaque. (a) False (b) True
  31. 31.True or false: a sunny open place is needed for the shadow clock. (a) False (b) True
  32. 32.True or false: a straight stick is not needed for the shadow clock. (a) False (b) True
  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) False (b) True
  34. 34.🔍 Which is the odd one out? (a) a steel plate (b) your hand (c) clear plastic film (d) a brick
  35. 35.🧺 Which of these is not needed for the shadow clock? (a) a magnet (b) a clock to check (c) chalk to mark shadows (d) a sunny open place
  36. 36.🔦 Is tissue paper opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
  37. 37.🛟 What should you wear for a long time in the hot sun? (a) a raincoat (b) a cap or hat (c) nothing on your head (d) a woollen sweater
  38. 38.🔦 Is frosted glass opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
  39. 39.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the stick kept upright”? (a) we change it (b) we keep it the same (c) we measure it
  40. 40.True or false: oily paper is translucent. (a) True (b) False

Answer key

  1. True
  2. False
  3. False
  4. we keep it the same
  5. air
  6. oily paper
  7. False
  8. a straight stick
  9. False
  10. needed
  11. bigger
  12. False
  13. False
  14. False
  15. Earth keeps spinning
  16. False
  17. a mirror
  18. does not work well
  19. opaque
  20. yeast
  21. look straight at the Sun
  22. turmeric powder
  23. translucent
  24. needed
  25. False
  26. False
  27. the time of day
  28. around noon
  29. frosted glass
  30. True
  31. True
  32. False
  33. False
  34. clear plastic film
  35. a magnet
  36. translucent
  37. a cap or hat
  38. translucent
  39. we keep it the same
  40. True

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