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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 493 · 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.🧺 Which of these is needed for the shadow clock? (a) a magnet (b) a sunny open place (c) turmeric powder (d) a battery cell
  2. 2.True or false: butter paper is transparent. (a) True (b) False
  3. 3.🧺 Do we need a magnet for the shadow clock? (a) not needed (b) needed
  4. 4.⚖️ 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
  5. 5.True or false: chalk to mark shadows is needed for the shadow clock. (a) False (b) True
  6. 6.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) a sunny open place (c) a clock to check (d) turmeric powder
  7. 7.🌞 When is a stick’s shadow the shortest? (a) around noon (b) early morning (c) late evening (d) at night
  8. 8.True or false: a straight stick is not needed for the shadow clock. (a) False (b) True
  9. 9.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a mirror (b) chalk to mark shadows (c) a sunny open place (d) a straight stick
  10. 10.True or false: turmeric powder is needed for the shadow clock. (a) False (b) True
  11. 11.🧺 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) turmeric powder
  12. 12.⚖️ 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
  13. 13.True or false: a straight stick is needed for the shadow clock. (a) True (b) False
  14. 14.🔦 Which of these is translucent? (a) your hand (b) a wooden board (c) clear plastic film (d) oily paper
  15. 15.📘 Why does a shadow form? (a) the object is cold (b) an object blocks light (c) the ground is dark (d) light bends round it
  16. 16.🧺 Do we need a battery cell for the shadow clock? (a) needed (b) not needed
  17. 17.🧺 Which of these is needed for the shadow clock? (a) a magnet (b) turmeric powder (c) a straight stick (d) a balloon
  18. 18.🧺 Do we need a sunny open place for the shadow clock? (a) needed (b) not needed
  19. 19.🛟 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
  20. 20.True or false: a clock to check is not needed for the shadow clock. (a) True (b) False
  21. 21.🔦 Is a steel plate opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
  22. 22.🛟 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
  23. 23.True or false: a battery cell is not needed for the shadow clock. (a) True (b) False
  24. 24.🔮 Predict: on a fully cloudy day, the sundial ___. (a) works better (b) does not work well (c) shows two times (d) runs faster
  25. 25.🌍 Why does the stick’s shadow move during the day? (a) the stick grows (b) the stick walks (c) Earth keeps spinning (d) the ground slides
  26. 26.🔦 Which of these is translucent? (a) a brick (b) frosted glass (c) clean water (d) clear plastic film
  27. 27.True or false: yeast is needed for the shadow clock. (a) True (b) False
  28. 28.True or false: clear glass is opaque. (a) False (b) True
  29. 29.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) a sunny open place (c) a balloon (d) a straight stick
  30. 30.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) missing (b) short (c) round (d) long
  31. 31.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is what we measure. (a) True (b) False
  32. 32.True or false: a sunny open place is needed for the shadow clock. (a) True (b) False
  33. 33.🧺 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) yeast (d) a straight stick
  34. 34.True or false: a balloon is not needed for the shadow clock. (a) True (b) False
  35. 35.🔦 Is frosted glass opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
  36. 36.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) brighter (b) bigger (c) coloured (d) smaller
  37. 37.⚖️ 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 change it (c) we keep it the same
  38. 38.True or false: a clock to check is needed for the shadow clock. (a) True (b) False
  39. 39.🧺 Do we need chalk to mark shadows for the shadow clock? (a) not needed (b) needed
  40. 40.🔦 Which of these is transparent? (a) a book (b) clean water (c) a wooden board (d) your hand

Answer key

  1. a sunny open place
  2. False
  3. not needed
  4. True
  5. True
  6. turmeric powder
  7. around noon
  8. False
  9. a mirror
  10. False
  11. turmeric powder
  12. shadow length
  13. True
  14. oily paper
  15. an object blocks light
  16. not needed
  17. a straight stick
  18. needed
  19. a cap or hat
  20. False
  21. opaque
  22. look straight at the Sun
  23. True
  24. does not work well
  25. Earth keeps spinning
  26. frosted glass
  27. False
  28. False
  29. a balloon
  30. long
  31. False
  32. True
  33. yeast
  34. True
  35. translucent
  36. bigger
  37. we change it
  38. True
  39. needed
  40. clean water

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