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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 870 · 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? What do we do with “the same spot”? (a) we measure it (b) we change it (c) we keep it the same
  2. 2.True or false: a steel plate is translucent. (a) False (b) True
  3. 3.True or false: air is transparent. (a) False (b) True
  4. 4.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) smaller (b) coloured (c) bigger (d) brighter
  5. 5.🛟 While watching shadows outdoors, what must you never do? (a) sit in the shade (b) wear a cap (c) mark with chalk (d) look straight at the Sun
  6. 6.⚖️ 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
  7. 7.True or false: chalk to mark shadows is not needed for the shadow clock. (a) False (b) True
  8. 8.🧺 Do we need a sunny open place for the shadow clock? (a) not needed (b) needed
  9. 9.🧺 Do we need chalk to mark shadows for the shadow clock? (a) needed (b) not needed
  10. 10.⚖️ 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 measure it (c) we keep it the same
  11. 11.⚖️ 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
  12. 12.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) turmeric powder (b) chalk to mark shadows (c) a clock to check (d) a sunny open place
  13. 13.📘 Why does a shadow form? (a) the object is cold (b) light bends round it (c) an object blocks light (d) the ground is dark
  14. 14.🔦 Which of these is transparent? (a) a steel plate (b) air (c) frosted glass (d) a book
  15. 15.🔦 Which of these is opaque? (a) frosted glass (b) air (c) butter paper (d) a wooden board
  16. 16.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) short (b) round (c) missing (d) long
  17. 17.🌍 Why does the stick’s shadow move during the day? (a) the stick grows (b) the stick walks (c) Earth keeps spinning (d) the ground slides
  18. 18.True or false: yeast is not needed for the shadow clock. (a) False (b) True
  19. 19.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) chalk to mark shadows (c) a balloon (d) a straight stick
  20. 20.True or false: a mirror is needed for the shadow clock. (a) False (b) True
  21. 21.True or false: a magnet is needed for the shadow clock. (a) False (b) True
  22. 22.🧺 Do we need a straight stick for the shadow clock? (a) needed (b) not needed
  23. 23.🔦 Which of these is translucent? (a) a wooden board (b) your hand (c) a brick (d) butter paper
  24. 24.🧺 Which of these is needed for the shadow clock? (a) a balloon (b) a magnet (c) chalk to mark shadows (d) turmeric powder
  25. 25.🔍 Which is the odd one out? (a) clear glass (b) oily paper (c) butter paper (d) tissue paper
  26. 26.🔍 Which is the odd one out? (a) butter paper (b) oily paper (c) a steel plate (d) tissue paper
  27. 27.🛟 What should you wear for a long time in the hot sun? (a) a cap or hat (b) a woollen sweater (c) nothing on your head (d) a raincoat
  28. 28.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) the time of day (b) the same stick (c) shadow length
  29. 29.🔦 Is a wooden board opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
  30. 30.🧺 Do we need turmeric powder for the shadow clock? (a) not needed (b) needed
  31. 31.🕰️ What is a sundial used for? (a) telling the time (b) making rainbows (c) measuring rain (d) weighing things
  32. 32.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) yeast (c) a straight stick (d) a sunny open place
  33. 33.True or false: a book is opaque. (a) False (b) True
  34. 34.🔦 Is clear plastic film opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
  35. 35.🧺 Do we need a magnet for the shadow clock? (a) needed (b) not needed
  36. 36.🧺 Do we need a balloon for the shadow clock? (a) needed (b) not needed
  37. 37.True or false: a steel plate is opaque. (a) False (b) True
  38. 38.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) the stick kept upright (b) the time of day (c) shadow length
  39. 39.🌞 When is a stick’s shadow the shortest? (a) late evening (b) at night (c) around noon (d) early morning
  40. 40.True or false: butter paper is opaque. (a) True (b) False

Answer key

  1. we keep it the same
  2. False
  3. True
  4. bigger
  5. look straight at the Sun
  6. True
  7. False
  8. needed
  9. needed
  10. we keep it the same
  11. we change it
  12. turmeric powder
  13. an object blocks light
  14. air
  15. a wooden board
  16. long
  17. Earth keeps spinning
  18. True
  19. a balloon
  20. False
  21. False
  22. needed
  23. butter paper
  24. chalk to mark shadows
  25. clear glass
  26. a steel plate
  27. a cap or hat
  28. the same stick
  29. opaque
  30. not needed
  31. telling the time
  32. yeast
  33. True
  34. transparent
  35. not needed
  36. not needed
  37. True
  38. the stick kept upright
  39. around noon
  40. False

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