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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 447 · 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? True or false: shadow length is what we measure. (a) True (b) False
  2. 2.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) shadow length (b) the time of day (c) the stick kept upright (d) the same spot
  3. 3.⚖️ 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
  4. 4.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) missing (b) long (c) short (d) round
  5. 5.🧺 Which of these is needed for the shadow clock? (a) yeast (b) a sunny open place (c) a balloon (d) turmeric powder
  6. 6.⚖️ 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
  7. 7.📘 Why does a shadow form? (a) an object blocks light (b) the object is cold (c) the ground is dark (d) light bends round it
  8. 8.🧺 Do we need a battery cell for the shadow clock? (a) not needed (b) needed
  9. 9.🔦 Which of these is opaque? (a) frosted glass (b) oily paper (c) a brick (d) tissue paper
  10. 10.🛟 While watching shadows outdoors, what must you never do? (a) look straight at the Sun (b) sit in the shade (c) wear a cap (d) mark with chalk
  11. 11.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the time of day is kept the same. (a) True (b) False
  12. 12.🔍 Which is the odd one out? (a) clean water (b) clear plastic film (c) tissue paper (d) clear glass
  13. 13.🌞 When is a stick’s shadow the shortest? (a) early morning (b) late evening (c) around noon (d) at night
  14. 14.🔦 Is clear plastic film opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
  15. 15.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) turmeric powder (b) a clock to check (c) chalk to mark shadows (d) a straight stick
  16. 16.True or false: a battery cell is not needed for the shadow clock. (a) False (b) True
  17. 17.🧺 Do we need a magnet for the shadow clock? (a) not needed (b) needed
  18. 18.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) coloured (b) brighter (c) bigger (d) smaller
  19. 19.🔍 Which is the odd one out? (a) clear plastic film (b) a book (c) air (d) clear glass
  20. 20.🔍 Which is the odd one out? (a) tissue paper (b) oily paper (c) clear glass (d) butter paper
  21. 21.⚖️ 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 same spot (c) the time of day
  22. 22.🔦 Which of these is translucent? (a) air (b) tissue paper (c) clean water (d) clear glass
  23. 23.⚖️ 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
  24. 24.🔦 Is tissue paper opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
  25. 25.True or false: tissue paper is opaque. (a) False (b) True
  26. 26.🔦 Is air opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
  27. 27.🧺 Do we need chalk to mark shadows for the shadow clock? (a) needed (b) not needed
  28. 28.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) chalk to mark shadows (c) a balloon (d) a straight stick
  29. 29.True or false: clear glass is transparent. (a) False (b) True
  30. 30.🔦 Which of these is opaque? (a) your hand (b) oily paper (c) clear plastic film (d) clean water
  31. 31.🔦 Is a steel plate opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
  32. 32.⚖️ 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
  33. 33.True or false: turmeric powder is not needed for the shadow clock. (a) True (b) False
  34. 34.🔍 Which is the odd one out? (a) a steel plate (b) oily paper (c) a book (d) a brick
  35. 35.🛟 What should you wear for a long time in the hot sun? (a) a woollen sweater (b) a raincoat (c) a cap or hat (d) nothing on your head
  36. 36.🔍 Which is the odd one out? (a) tissue paper (b) air (c) frosted glass (d) butter paper
  37. 37.⚖️ 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) True (b) False
  38. 38.🔍 Which is the odd one out? (a) butter paper (b) oily paper (c) frosted glass (d) a wooden board
  39. 39.True or false: yeast is needed for the shadow clock. (a) False (b) True
  40. 40.True or false: a straight stick is needed for the shadow clock. (a) False (b) True

Answer key

  1. True
  2. shadow length
  3. we keep it the same
  4. long
  5. a sunny open place
  6. we change it
  7. an object blocks light
  8. not needed
  9. a brick
  10. look straight at the Sun
  11. False
  12. tissue paper
  13. around noon
  14. transparent
  15. turmeric powder
  16. True
  17. not needed
  18. bigger
  19. a book
  20. clear glass
  21. the same spot
  22. tissue paper
  23. we measure it
  24. translucent
  25. False
  26. transparent
  27. needed
  28. a balloon
  29. True
  30. your hand
  31. opaque
  32. the stick kept upright
  33. True
  34. oily paper
  35. a cap or hat
  36. air
  37. True
  38. a wooden board
  39. False
  40. True

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