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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 474 · 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.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) long (b) missing (c) short (d) round
  2. 2.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) a balloon (c) a sunny open place (d) a straight stick
  3. 3.🧺 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
  4. 4.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) coloured (b) bigger (c) brighter (d) smaller
  5. 5.🧺 Do we need a balloon for the shadow clock? (a) needed (b) not needed
  6. 6.🧺 Do we need a clock to check for the shadow clock? (a) needed (b) not needed
  7. 7.⚖️ 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) the time of day (c) the same spot (d) shadow length
  8. 8.⚖️ 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
  9. 9.🧺 Which of these is needed for the shadow clock? (a) a mirror (b) a straight stick (c) a balloon (d) a battery cell
  10. 10.🔦 Is a book opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
  11. 11.True or false: a balloon is not needed for the shadow clock. (a) True (b) False
  12. 12.🔦 Is clear glass opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
  13. 13.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the stick kept upright is kept the same. (a) False (b) True
  14. 14.🧺 Do we need turmeric powder for the shadow clock? (a) needed (b) not needed
  15. 15.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is what we measure. (a) True (b) False
  16. 16.🧺 Which of these is needed for the shadow clock? (a) yeast (b) a clock to check (c) a balloon (d) a battery cell
  17. 17.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same spot”? (a) we keep it the same (b) we measure it (c) we change it
  18. 18.🔮 Predict: on a fully cloudy day, the sundial ___. (a) shows two times (b) works better (c) runs faster (d) does not work well
  19. 19.True or false: chalk to mark shadows is needed for the shadow clock. (a) False (b) True
  20. 20.🔦 Is your hand opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
  21. 21.🛟 What should you wear for a long time in the hot sun? (a) a woollen sweater (b) nothing on your head (c) a cap or hat (d) a raincoat
  22. 22.🧺 Do we need a magnet for the shadow clock? (a) needed (b) not needed
  23. 23.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the time of day”? (a) we keep it the same (b) we measure it (c) we change it
  24. 24.🔍 Which is the odd one out? (a) clean water (b) tissue paper (c) clear plastic film (d) clear glass
  25. 25.True or false: clear plastic film is opaque. (a) True (b) False
  26. 26.True or false: a mirror is needed for the shadow clock. (a) True (b) False
  27. 27.True or false: yeast is not needed for the shadow clock. (a) False (b) True
  28. 28.🔦 Which of these is translucent? (a) a book (b) air (c) oily paper (d) clean water
  29. 29.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) a straight stick (c) a magnet (d) a clock to check
  30. 30.🔦 Is clear plastic film opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
  31. 31.True or false: a brick is translucent. (a) False (b) True
  32. 32.🔦 Which of these is translucent? (a) butter paper (b) clear plastic film (c) clean water (d) your hand
  33. 33.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) east (b) north (c) up (d) west
  34. 34.🔦 Is oily paper opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
  35. 35.🧺 Do we need a battery cell for the shadow clock? (a) needed (b) not needed
  36. 36.🔦 Which of these is transparent? (a) a steel plate (b) a wooden board (c) butter paper (d) clean water
  37. 37.🔦 Is tissue paper opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
  38. 38.🛟 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
  39. 39.🕰️ What is a sundial used for? (a) weighing things (b) measuring rain (c) making rainbows (d) telling the time
  40. 40.🧺 Do we need a mirror for the shadow clock? (a) needed (b) not needed

Answer key

  1. long
  2. a balloon
  3. turmeric powder
  4. bigger
  5. not needed
  6. needed
  7. shadow length
  8. True
  9. a straight stick
  10. opaque
  11. True
  12. transparent
  13. True
  14. not needed
  15. True
  16. a clock to check
  17. we keep it the same
  18. does not work well
  19. True
  20. opaque
  21. a cap or hat
  22. not needed
  23. we change it
  24. tissue paper
  25. False
  26. False
  27. True
  28. oily paper
  29. a magnet
  30. transparent
  31. False
  32. butter paper
  33. west
  34. translucent
  35. not needed
  36. clean water
  37. translucent
  38. look straight at the Sun
  39. telling the time
  40. not needed

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