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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 650 · 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 kept the same? (a) shadow length (b) the time of day (c) the same spot
  2. 2.🔦 Is your hand opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
  3. 3.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) north (b) up (c) west (d) east
  4. 4.True or false: butter paper is translucent. (a) False (b) True
  5. 5.True or false: a straight stick is needed for the shadow clock. (a) False (b) True
  6. 6.🧺 Which of these is needed for the shadow clock? (a) chalk to mark shadows (b) a mirror (c) a battery cell (d) turmeric powder
  7. 7.🧺 Do we need a balloon for the shadow clock? (a) not needed (b) needed
  8. 8.⚖️ 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
  9. 9.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) yeast (b) a sunny open place (c) a straight stick (d) chalk to mark shadows
  10. 10.True or false: clear plastic film is transparent. (a) True (b) False
  11. 11.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) a magnet (c) a straight stick (d) chalk to mark shadows
  12. 12.🛟 While watching shadows outdoors, what must you never do? (a) wear a cap (b) sit in the shade (c) look straight at the Sun (d) mark with chalk
  13. 13.True or false: chalk to mark shadows is not needed for the shadow clock. (a) True (b) False
  14. 14.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a mirror (c) a sunny open place (d) a straight stick
  15. 15.🔦 Which of these is translucent? (a) frosted glass (b) a wooden board (c) a book (d) air
  16. 16.True or false: a battery cell is not needed for the shadow clock. (a) False (b) True
  17. 17.True or false: a book is translucent. (a) True (b) False
  18. 18.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) brighter (b) bigger (c) smaller (d) coloured
  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.🕰️ What is a sundial used for? (a) weighing things (b) measuring rain (c) making rainbows (d) telling the time
  21. 21.🧺 Do we need chalk to mark shadows for the shadow clock? (a) not needed (b) needed
  22. 22.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) shadow length (b) the stick kept upright (c) the time of day
  23. 23.📘 Why does a shadow form? (a) the ground is dark (b) light bends round it (c) an object blocks light (d) the object is cold
  24. 24.🧺 Which of these is needed for the shadow clock? (a) a battery cell (b) yeast (c) a sunny open place (d) turmeric powder
  25. 25.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same stick”? (a) we change it (b) we measure it (c) we keep it the same
  26. 26.🧺 Do we need a magnet for the shadow clock? (a) needed (b) not needed
  27. 27.True or false: yeast is not needed for the shadow clock. (a) False (b) True
  28. 28.True or false: tissue paper is opaque. (a) False (b) True
  29. 29.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) turmeric powder (b) chalk to mark shadows (c) a sunny open place (d) a straight stick
  30. 30.True or false: a straight stick is not needed for the shadow clock. (a) False (b) True
  31. 31.True or false: chalk to mark shadows is needed for the shadow clock. (a) False (b) True
  32. 32.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is what we measure. (a) True (b) False
  33. 33.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a battery cell (b) a sunny open place (c) a clock to check (d) a straight stick
  34. 34.True or false: tissue paper is translucent. (a) True (b) False
  35. 35.🧺 Which of these is not needed for the shadow clock? (a) a clock to check (b) a magnet (c) a sunny open place (d) a straight stick
  36. 36.True or false: a book is opaque. (a) False (b) True
  37. 37.True or false: a magnet is not needed for the shadow clock. (a) True (b) False
  38. 38.True or false: a clock to check is needed for the shadow clock. (a) True (b) False
  39. 39.True or false: a balloon is needed for the shadow clock. (a) False (b) True
  40. 40.🔮 Predict: on a fully cloudy day, the sundial ___. (a) does not work well (b) runs faster (c) shows two times (d) works better

Answer key

  1. the same spot
  2. opaque
  3. west
  4. True
  5. True
  6. chalk to mark shadows
  7. not needed
  8. we keep it the same
  9. yeast
  10. True
  11. a magnet
  12. look straight at the Sun
  13. False
  14. a mirror
  15. frosted glass
  16. True
  17. False
  18. bigger
  19. False
  20. telling the time
  21. needed
  22. the stick kept upright
  23. an object blocks light
  24. a sunny open place
  25. we keep it the same
  26. not needed
  27. True
  28. False
  29. turmeric powder
  30. False
  31. True
  32. False
  33. a battery cell
  34. True
  35. a magnet
  36. True
  37. True
  38. True
  39. False
  40. does not work well

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