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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 391 · 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? Which of these is what we measure? (a) the same stick (b) shadow length (c) the same spot (d) the stick kept upright
  2. 2.True or false: frosted glass is translucent. (a) True (b) False
  3. 3.⚖️ 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 change it (c) we measure it
  4. 4.⚖️ 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 same stick (d) shadow length
  5. 5.🧺 Do we need a straight stick for the shadow clock? (a) not needed (b) needed
  6. 6.🔦 Which of these is opaque? (a) clean water (b) frosted glass (c) clear plastic film (d) a brick
  7. 7.🔍 Which is the odd one out? (a) air (b) a brick (c) a book (d) a steel plate
  8. 8.🧺 Do we need a balloon for the shadow clock? (a) needed (b) not needed
  9. 9.True or false: a straight stick is not needed for the shadow clock. (a) True (b) False
  10. 10.🧺 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) yeast
  11. 11.🛟 What should you wear for a long time in the hot sun? (a) nothing on your head (b) a raincoat (c) a cap or hat (d) a woollen sweater
  12. 12.🔍 Which is the odd one out? (a) clear glass (b) a brick (c) your hand (d) a steel plate
  13. 13.🔮 Predict: on a fully cloudy day, the sundial ___. (a) does not work well (b) works better (c) shows two times (d) runs faster
  14. 14.🔦 Is oily paper opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
  15. 15.🌍 Why does the stick’s shadow move during the day? (a) the stick walks (b) Earth keeps spinning (c) the stick grows (d) the ground slides
  16. 16.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) a magnet (c) chalk to mark shadows (d) a clock to check
  17. 17.True or false: clear glass is translucent. (a) False (b) True
  18. 18.True or false: clear glass is transparent. (a) False (b) True
  19. 19.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same stick”? (a) we keep it the same (b) we measure it (c) we change it
  20. 20.🧺 Do we need yeast for the shadow clock? (a) needed (b) not needed
  21. 21.🛟 While watching shadows outdoors, what must you never do? (a) mark with chalk (b) look straight at the Sun (c) sit in the shade (d) wear a cap
  22. 22.True or false: a clock to check is needed for the shadow clock. (a) False (b) True
  23. 23.True or false: your hand is translucent. (a) True (b) False
  24. 24.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a magnet (c) chalk to mark shadows (d) a clock to check
  25. 25.🧺 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) a sunny open place (d) a balloon
  26. 26.🧺 Do we need a mirror for the shadow clock? (a) not needed (b) needed
  27. 27.True or false: a magnet is needed for the shadow clock. (a) True (b) False
  28. 28.🔦 Is frosted glass opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
  29. 29.🔦 Which of these is transparent? (a) a book (b) a wooden board (c) a brick (d) clear plastic film
  30. 30.🔍 Which is the odd one out? (a) frosted glass (b) oily paper (c) tissue paper (d) a brick
  31. 31.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the time of day is the one thing we change. (a) False (b) True
  32. 32.True or false: air is transparent. (a) False (b) True
  33. 33.🔦 Which of these is translucent? (a) a steel plate (b) a wooden board (c) butter paper (d) clear glass
  34. 34.True or false: a mirror is needed for the shadow clock. (a) False (b) True
  35. 35.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) bigger (b) brighter (c) coloured (d) smaller
  36. 36.True or false: a magnet is not needed for the shadow clock. (a) False (b) True
  37. 37.🔦 Is air opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
  38. 38.🔦 Which of these is opaque? (a) air (b) a steel plate (c) clear glass (d) frosted glass
  39. 39.🔦 Which of these is opaque? (a) clean water (b) frosted glass (c) your hand (d) tissue paper
  40. 40.🔦 Which of these is opaque? (a) oily paper (b) frosted glass (c) clean water (d) a book

Answer key

  1. shadow length
  2. True
  3. we keep it the same
  4. the time of day
  5. needed
  6. a brick
  7. air
  8. not needed
  9. False
  10. yeast
  11. a cap or hat
  12. clear glass
  13. does not work well
  14. translucent
  15. Earth keeps spinning
  16. a magnet
  17. False
  18. True
  19. we keep it the same
  20. not needed
  21. look straight at the Sun
  22. True
  23. False
  24. a magnet
  25. a balloon
  26. not needed
  27. False
  28. translucent
  29. clear plastic film
  30. a brick
  31. True
  32. True
  33. butter paper
  34. False
  35. bigger
  36. True
  37. transparent
  38. a steel plate
  39. your hand
  40. a book

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