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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 664 · 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.True or false: a sunny open place is needed for the shadow clock. (a) False (b) True
  2. 2.True or false: your hand is translucent. (a) False (b) True
  3. 3.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is the one thing we change. (a) True (b) False
  4. 4.🕰️ What is a sundial used for? (a) measuring rain (b) making rainbows (c) telling the time (d) weighing things
  5. 5.⚖️ 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
  6. 6.🔦 Is a steel plate opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
  7. 7.🔦 Is clear plastic film opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
  8. 8.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) coloured (b) smaller (c) bigger (d) brighter
  9. 9.🧺 Do we need a battery cell for the shadow clock? (a) needed (b) not needed
  10. 10.🧺 Which of these is needed for the shadow clock? (a) yeast (b) a straight stick (c) turmeric powder (d) a balloon
  11. 11.🔦 Is your hand opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
  12. 12.⚖️ 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
  13. 13.🔍 Which is the odd one out? (a) butter paper (b) oily paper (c) frosted glass (d) a wooden board
  14. 14.True or false: a straight stick is needed for the shadow clock. (a) True (b) False
  15. 15.📘 Why does a shadow form? (a) the ground is dark (b) an object blocks light (c) the object is cold (d) light bends round it
  16. 16.🔍 Which is the odd one out? (a) clean water (b) clear glass (c) air (d) a brick
  17. 17.True or false: clean water is opaque. (a) True (b) False
  18. 18.🛟 What should you wear for a long time in the hot sun? (a) a woollen sweater (b) nothing on your head (c) a raincoat (d) a cap or hat
  19. 19.🔦 Is frosted glass opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
  20. 20.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “shadow length”? (a) we measure it (b) we keep it the same (c) we change it
  21. 21.True or false: a steel plate is transparent. (a) False (b) True
  22. 22.🧺 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) chalk to mark shadows (d) yeast
  23. 23.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a balloon (b) a straight stick (c) chalk to mark shadows (d) a sunny open place
  24. 24.True or false: chalk to mark shadows is not needed for the shadow clock. (a) False (b) True
  25. 25.True or false: tissue paper is opaque. (a) False (b) True
  26. 26.🧺 Which of these is not needed for the shadow clock? (a) a clock to check (b) a balloon (c) chalk to mark shadows (d) a straight stick
  27. 27.True or false: a book is transparent. (a) True (b) False
  28. 28.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) a clock to check (c) a sunny open place (d) turmeric powder
  29. 29.True or false: clean water is translucent. (a) True (b) False
  30. 30.🔮 Predict: on a fully cloudy day, the sundial ___. (a) works better (b) runs faster (c) shows two times (d) does not work well
  31. 31.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the time of day is what we measure. (a) True (b) False
  32. 32.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) the time of day (b) the same spot (c) the stick kept upright (d) the same stick
  33. 33.🔍 Which is the odd one out? (a) frosted glass (b) air (c) oily paper (d) butter paper
  34. 34.🧺 Do we need turmeric powder for the shadow clock? (a) not needed (b) needed
  35. 35.🔍 Which is the odd one out? (a) clear glass (b) clean water (c) air (d) butter paper
  36. 36.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a magnet (c) a straight stick (d) a clock to check
  37. 37.🧺 Do we need a sunny open place for the shadow clock? (a) needed (b) not needed
  38. 38.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the stick kept upright”? (a) we measure it (b) we keep it the same (c) we change it
  39. 39.⚖️ 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 spot (c) shadow length (d) the time of day
  40. 40.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) missing (b) long (c) round (d) short

Answer key

  1. True
  2. False
  3. False
  4. telling the time
  5. the same stick
  6. opaque
  7. transparent
  8. bigger
  9. not needed
  10. a straight stick
  11. opaque
  12. True
  13. a wooden board
  14. True
  15. an object blocks light
  16. a brick
  17. False
  18. a cap or hat
  19. translucent
  20. we measure it
  21. False
  22. yeast
  23. a balloon
  24. False
  25. False
  26. a balloon
  27. False
  28. turmeric powder
  29. False
  30. does not work well
  31. False
  32. the time of day
  33. air
  34. not needed
  35. butter paper
  36. a magnet
  37. needed
  38. we keep it the same
  39. shadow length
  40. long

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