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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 621 · 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.

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

Answer key

  1. butter paper
  2. opaque
  3. yeast
  4. does not work well
  5. True
  6. a balloon
  7. turmeric powder
  8. around noon
  9. clear glass
  10. we measure it
  11. True
  12. False
  13. translucent
  14. True
  15. a cap or hat
  16. True
  17. chalk to mark shadows
  18. a clock to check
  19. oily paper
  20. True
  21. a battery cell
  22. telling the time
  23. an object blocks light
  24. False
  25. True
  26. the time of day
  27. True
  28. True
  29. False
  30. translucent
  31. False
  32. True
  33. tissue paper
  34. not needed
  35. False
  36. the same stick
  37. a wooden board
  38. a book
  39. air
  40. needed

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