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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 739 · 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.

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

Answer key

  1. your hand
  2. does not work well
  3. turmeric powder
  4. look straight at the Sun
  5. a clock to check
  6. True
  7. bigger
  8. a balloon
  9. transparent
  10. False
  11. translucent
  12. we keep it the same
  13. transparent
  14. True
  15. False
  16. True
  17. a balloon
  18. clear glass
  19. True
  20. a magnet
  21. a magnet
  22. not needed
  23. not needed
  24. False
  25. True
  26. True
  27. a cap or hat
  28. a book
  29. opaque
  30. False
  31. yeast
  32. we measure it
  33. not needed
  34. needed
  35. we keep it the same
  36. True
  37. opaque
  38. chalk to mark shadows
  39. a mirror
  40. False

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