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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 816 · 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 straight stick (b) a sunny open place (c) a mirror (d) chalk to mark shadows
  2. 2.🧺 Do we need a sunny open place for the shadow clock? (a) not needed (b) needed
  3. 3.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is kept the same. (a) False (b) True
  4. 4.🌞 When is a stick’s shadow the shortest? (a) around noon (b) at night (c) early morning (d) late evening
  5. 5.🛟 While watching shadows outdoors, what must you never do? (a) wear a cap (b) look straight at the Sun (c) mark with chalk (d) sit in the shade
  6. 6.🔍 Which is the odd one out? (a) a steel plate (b) clean water (c) clear glass (d) clear plastic film
  7. 7.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) short (b) round (c) long (d) missing
  8. 8.📘 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
  9. 9.🧺 Do we need a battery cell for the shadow clock? (a) needed (b) not needed
  10. 10.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the stick kept upright is the one thing we change. (a) False (b) True
  11. 11.🔦 Is frosted glass opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
  12. 12.🧺 Do we need a clock to check for the shadow clock? (a) not needed (b) needed
  13. 13.🔍 Which is the odd one out? (a) a wooden board (b) a steel plate (c) a brick (d) butter paper
  14. 14.True or false: a steel plate is opaque. (a) True (b) False
  15. 15.🧺 Do we need chalk to mark shadows for the shadow clock? (a) not needed (b) needed
  16. 16.⚖️ 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 change it (c) we keep it the same
  17. 17.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) chalk to mark shadows (c) a sunny open place (d) a balloon
  18. 18.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) a sunny open place (c) a balloon (d) a straight stick
  19. 19.True or false: a sunny open place is not needed for the shadow clock. (a) True (b) False
  20. 20.🧺 Which of these is needed for the shadow clock? (a) a straight stick (b) yeast (c) a battery cell (d) turmeric powder
  21. 21.🔦 Is oily paper opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
  22. 22.🔮 Predict: on a fully cloudy day, the sundial ___. (a) runs faster (b) does not work well (c) shows two times (d) works better
  23. 23.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) the stick kept upright (b) the same stick (c) shadow length (d) the time of day
  24. 24.⚖️ 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 keep it the same (c) we measure it
  25. 25.🔦 Is air opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
  26. 26.True or false: a wooden board is translucent. (a) False (b) True
  27. 27.🔦 Is a wooden board opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
  28. 28.🧺 Do we need yeast for the shadow clock? (a) needed (b) not needed
  29. 29.True or false: air is translucent. (a) False (b) True
  30. 30.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) smaller (b) brighter (c) coloured (d) bigger
  31. 31.⚖️ 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
  32. 32.True or false: oily paper is opaque. (a) True (b) False
  33. 33.True or false: a magnet is needed for the shadow clock. (a) False (b) True
  34. 34.🔦 Which of these is transparent? (a) butter paper (b) your hand (c) frosted glass (d) clear glass
  35. 35.🧺 Which of these is needed for the shadow clock? (a) a clock to check (b) a mirror (c) turmeric powder (d) yeast
  36. 36.🔦 Which of these is opaque? (a) clean water (b) air (c) clear glass (d) a brick
  37. 37.🔦 Which of these is opaque? (a) tissue paper (b) a book (c) air (d) oily paper
  38. 38.🛟 What should you wear for a long time in the hot sun? (a) a cap or hat (b) a raincoat (c) a woollen sweater (d) nothing on your head
  39. 39.True or false: yeast is needed for the shadow clock. (a) True (b) False
  40. 40.🧺 Which of these is not needed for the shadow clock? (a) a magnet (b) a clock to check (c) a sunny open place (d) chalk to mark shadows

Answer key

  1. a mirror
  2. needed
  3. True
  4. around noon
  5. look straight at the Sun
  6. a steel plate
  7. long
  8. an object blocks light
  9. not needed
  10. False
  11. translucent
  12. needed
  13. butter paper
  14. True
  15. needed
  16. we change it
  17. a balloon
  18. a balloon
  19. False
  20. a straight stick
  21. translucent
  22. does not work well
  23. shadow length
  24. we keep it the same
  25. transparent
  26. False
  27. opaque
  28. not needed
  29. False
  30. bigger
  31. we measure it
  32. False
  33. False
  34. clear glass
  35. a clock to check
  36. a brick
  37. a book
  38. a cap or hat
  39. False
  40. a magnet

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