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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 657 · 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.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a magnet (c) a clock to check (d) chalk to mark shadows
  2. 2.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) yeast (c) a clock to check (d) a straight stick
  3. 3.🧺 Do we need a mirror for the shadow clock? (a) needed (b) not needed
  4. 4.🧺 Do we need a magnet for the shadow clock? (a) needed (b) not needed
  5. 5.⚖️ 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
  6. 6.⚖️ 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 stick kept upright (d) the time of day
  7. 7.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is the one thing we change. (a) False (b) True
  8. 8.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is what we measure. (a) False (b) True
  9. 9.True or false: frosted glass is transparent. (a) False (b) True
  10. 10.🛟 While watching shadows outdoors, what must you never do? (a) sit in the shade (b) mark with chalk (c) wear a cap (d) look straight at the Sun
  11. 11.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) a balloon (c) a straight stick (d) a clock to check
  12. 12.🔦 Is air opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
  13. 13.🔦 Is tissue paper opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
  14. 14.True or false: butter paper is opaque. (a) False (b) True
  15. 15.🔦 Is butter paper opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
  16. 16.True or false: yeast is not needed for the shadow clock. (a) True (b) False
  17. 17.True or false: a battery cell is needed for the shadow clock. (a) True (b) False
  18. 18.🔮 Predict: on a fully cloudy day, the sundial ___. (a) runs faster (b) shows two times (c) does not work well (d) works better
  19. 19.True or false: a sunny open place is needed for the shadow clock. (a) True (b) False
  20. 20.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) chalk to mark shadows (c) a sunny open place (d) yeast
  21. 21.⚖️ 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
  22. 22.True or false: a mirror is not needed for the shadow clock. (a) False (b) True
  23. 23.🔦 Is clear glass opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
  24. 24.🔦 Which of these is translucent? (a) a steel plate (b) air (c) a wooden board (d) butter paper
  25. 25.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a clock to check (c) a balloon (d) a straight stick
  26. 26.🧺 Do we need a straight stick for the shadow clock? (a) needed (b) not needed
  27. 27.⚖️ 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
  28. 28.🔦 Is a steel plate opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
  29. 29.🔍 Which is the odd one out? (a) clear glass (b) clean water (c) a steel plate (d) air
  30. 30.📘 Why does a shadow form? (a) light bends round it (b) the ground is dark (c) the object is cold (d) an object blocks light
  31. 31.True or false: butter paper is transparent. (a) True (b) False
  32. 32.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) up (b) north (c) east (d) west
  33. 33.🧺 Which of these is needed for the shadow clock? (a) yeast (b) a sunny open place (c) a mirror (d) a battery cell
  34. 34.🧺 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 mirror
  35. 35.🔍 Which is the odd one out? (a) frosted glass (b) clean water (c) butter paper (d) tissue paper
  36. 36.True or false: oily paper is translucent. (a) True (b) False
  37. 37.True or false: clean water is opaque. (a) True (b) False
  38. 38.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) bigger (b) brighter (c) coloured (d) smaller
  39. 39.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same spot”? (a) we measure it (b) we change it (c) we keep it the same
  40. 40.True or false: a brick is opaque. (a) False (b) True

Answer key

  1. a magnet
  2. yeast
  3. not needed
  4. not needed
  5. we keep it the same
  6. shadow length
  7. False
  8. True
  9. False
  10. look straight at the Sun
  11. a balloon
  12. transparent
  13. translucent
  14. False
  15. translucent
  16. True
  17. False
  18. does not work well
  19. True
  20. yeast
  21. we change it
  22. True
  23. transparent
  24. butter paper
  25. a balloon
  26. needed
  27. the same spot
  28. opaque
  29. a steel plate
  30. an object blocks light
  31. False
  32. west
  33. a sunny open place
  34. a mirror
  35. clean water
  36. True
  37. False
  38. bigger
  39. we keep it the same
  40. True

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