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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 824 · 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.🛟 While watching shadows outdoors, what must you never do? (a) look straight at the Sun (b) mark with chalk (c) sit in the shade (d) wear a cap
  2. 2.🔍 Which is the odd one out? (a) a wooden board (b) a book (c) clean water (d) your hand
  3. 3.🔮 Predict: on a fully cloudy day, the sundial ___. (a) runs faster (b) does not work well (c) shows two times (d) works better
  4. 4.True or false: a wooden board is opaque. (a) False (b) True
  5. 5.True or false: turmeric powder is needed for the shadow clock. (a) True (b) False
  6. 6.🛟 What should you wear for a long time in the hot sun? (a) a woollen sweater (b) a cap or hat (c) a raincoat (d) nothing on your head
  7. 7.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) a clock to check (c) chalk to mark shadows (d) turmeric powder
  8. 8.🧺 Do we need a sunny open place for the shadow clock? (a) not needed (b) needed
  9. 9.🧺 Do we need yeast for the shadow clock? (a) needed (b) not needed
  10. 10.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) a magnet (c) chalk to mark shadows (d) a straight stick
  11. 11.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) missing (b) short (c) round (d) long
  12. 12.🔍 Which is the odd one out? (a) a wooden board (b) butter paper (c) oily paper (d) frosted glass
  13. 13.🔦 Is clean water opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
  14. 14.True or false: chalk to mark shadows is not needed for the shadow clock. (a) False (b) True
  15. 15.True or false: a straight stick is needed for the shadow clock. (a) True (b) False
  16. 16.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) a clock to check (c) a balloon (d) chalk to mark shadows
  17. 17.🧺 Do we need turmeric powder for the shadow clock? (a) needed (b) not needed
  18. 18.🧺 Which of these is not needed for the shadow clock? (a) a mirror (b) a sunny open place (c) a straight stick (d) chalk to mark shadows
  19. 19.🧺 Which of these is needed for the shadow clock? (a) a battery cell (b) turmeric powder (c) chalk to mark shadows (d) a magnet
  20. 20.🕰️ What is a sundial used for? (a) making rainbows (b) weighing things (c) telling the time (d) measuring rain
  21. 21.📘 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
  22. 22.🧺 Do we need a battery cell for the shadow clock? (a) needed (b) not needed
  23. 23.🔦 Which of these is opaque? (a) clean water (b) frosted glass (c) oily paper (d) your hand
  24. 24.🧺 Do we need a balloon for the shadow clock? (a) needed (b) not needed
  25. 25.True or false: chalk to mark shadows is needed for the shadow clock. (a) True (b) False
  26. 26.🧺 Do we need a straight stick for the shadow clock? (a) not needed (b) needed
  27. 27.🔦 Is a wooden board opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
  28. 28.⚖️ 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
  29. 29.🔍 Which is the odd one out? (a) tissue paper (b) butter paper (c) your hand (d) frosted glass
  30. 30.⚖️ 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) shadow length (d) the same stick
  31. 31.🧺 Which of these is needed for the shadow clock? (a) a straight stick (b) a balloon (c) a magnet (d) a mirror
  32. 32.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) a mirror (c) a sunny open place (d) a straight stick
  33. 33.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a sunny open place (c) a straight stick (d) yeast
  34. 34.⚖️ 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 change it (c) we measure it
  35. 35.True or false: tissue paper is opaque. (a) True (b) False
  36. 36.🧺 Do we need a mirror for the shadow clock? (a) not needed (b) needed
  37. 37.🔦 Is butter paper opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
  38. 38.⚖️ 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
  39. 39.🔍 Which is the odd one out? (a) air (b) oily paper (c) clear glass (d) clear plastic film
  40. 40.🔦 Which of these is transparent? (a) butter paper (b) a brick (c) clean water (d) frosted glass

Answer key

  1. look straight at the Sun
  2. clean water
  3. does not work well
  4. True
  5. False
  6. a cap or hat
  7. turmeric powder
  8. needed
  9. not needed
  10. a magnet
  11. long
  12. a wooden board
  13. transparent
  14. False
  15. True
  16. a balloon
  17. not needed
  18. a mirror
  19. chalk to mark shadows
  20. telling the time
  21. an object blocks light
  22. not needed
  23. your hand
  24. not needed
  25. True
  26. needed
  27. opaque
  28. True
  29. your hand
  30. the time of day
  31. a straight stick
  32. a mirror
  33. yeast
  34. we keep it the same
  35. False
  36. not needed
  37. translucent
  38. we keep it the same
  39. oily paper
  40. clean water

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