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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 523 · 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: on a fully cloudy day, the sundial ___. (a) runs faster (b) shows two times (c) works better (d) does not work well
  2. 2.🌞 When is a stick’s shadow the shortest? (a) around noon (b) at night (c) late evening (d) early morning
  3. 3.⚖️ 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 stick kept upright (c) the same stick (d) the same spot
  4. 4.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) north (b) west (c) up (d) east
  5. 5.⚖️ 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
  6. 6.⚖️ 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
  7. 7.🧺 Which of these is needed for the shadow clock? (a) a magnet (b) a mirror (c) a battery cell (d) a clock to check
  8. 8.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a clock to check (c) a straight stick (d) turmeric powder
  9. 9.True or false: butter paper is opaque. (a) True (b) False
  10. 10.True or false: a straight stick is not needed for the shadow clock. (a) True (b) False
  11. 11.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) smaller (b) brighter (c) coloured (d) bigger
  12. 12.🔍 Which is the odd one out? (a) clear plastic film (b) air (c) clean water (d) a wooden board
  13. 13.🔦 Is a brick opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
  14. 14.🔦 Which of these is translucent? (a) a wooden board (b) oily paper (c) a steel plate (d) clear glass
  15. 15.🔦 Is frosted glass opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
  16. 16.🔦 Is a book opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
  17. 17.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) round (b) short (c) long (d) missing
  18. 18.🔦 Is air opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
  19. 19.🕰️ What is a sundial used for? (a) making rainbows (b) telling the time (c) measuring rain (d) weighing things
  20. 20.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) the time of day (b) the same stick (c) the stick kept upright (d) shadow length
  21. 21.True or false: chalk to mark shadows is needed for the shadow clock. (a) False (b) True
  22. 22.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) a straight stick (c) turmeric powder (d) chalk to mark shadows
  23. 23.True or false: a clock to check is not needed for the shadow clock. (a) False (b) True
  24. 24.🧺 Do we need a magnet for the shadow clock? (a) not needed (b) needed
  25. 25.🧺 Do we need a clock to check for the shadow clock? (a) not needed (b) needed
  26. 26.⚖️ 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
  27. 27.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) a balloon (c) chalk to mark shadows (d) a sunny open place
  28. 28.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a mirror (b) a clock to check (c) a sunny open place (d) chalk to mark shadows
  29. 29.🔦 Which of these is translucent? (a) a steel plate (b) clean water (c) air (d) frosted glass
  30. 30.True or false: frosted glass is opaque. (a) True (b) False
  31. 31.🛟 What should you wear for a long time in the hot sun? (a) a cap or hat (b) nothing on your head (c) a raincoat (d) a woollen sweater
  32. 32.True or false: clear plastic film is transparent. (a) False (b) True
  33. 33.True or false: a magnet is needed for the shadow clock. (a) True (b) False
  34. 34.True or false: your hand is transparent. (a) True (b) False
  35. 35.🔦 Which of these is transparent? (a) your hand (b) oily paper (c) clean water (d) a steel plate
  36. 36.True or false: your hand is opaque. (a) True (b) False
  37. 37.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) the same spot (b) the time of day (c) shadow length
  38. 38.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same stick”? (a) we keep it the same (b) we measure it (c) we change it
  39. 39.🔦 Which of these is opaque? (a) a wooden board (b) butter paper (c) frosted glass (d) clean water
  40. 40.🧺 Do we need a sunny open place for the shadow clock? (a) not needed (b) needed

Answer key

  1. does not work well
  2. around noon
  3. the time of day
  4. west
  5. we keep it the same
  6. we keep it the same
  7. a clock to check
  8. turmeric powder
  9. False
  10. False
  11. bigger
  12. a wooden board
  13. opaque
  14. oily paper
  15. translucent
  16. opaque
  17. long
  18. transparent
  19. telling the time
  20. shadow length
  21. True
  22. turmeric powder
  23. False
  24. not needed
  25. needed
  26. we measure it
  27. a balloon
  28. a mirror
  29. frosted glass
  30. False
  31. a cap or hat
  32. True
  33. False
  34. False
  35. clean water
  36. True
  37. the same spot
  38. we keep it the same
  39. a wooden board
  40. needed

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