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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 308 · 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.🕰️ What is a sundial used for? (a) measuring rain (b) making rainbows (c) weighing things (d) telling the time
  2. 2.⚖️ 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) False (b) True
  3. 3.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) a battery cell (c) a clock to check (d) chalk to mark shadows
  4. 4.🔦 Which of these is opaque? (a) clear glass (b) butter paper (c) a wooden board (d) clear plastic film
  5. 5.🔦 Is a book opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
  6. 6.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) chalk to mark shadows (c) a mirror (d) a clock to check
  7. 7.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is kept the same. (a) True (b) False
  8. 8.🔦 Which of these is translucent? (a) butter paper (b) a wooden board (c) clear glass (d) clear plastic film
  9. 9.🧺 Do we need a balloon for the shadow clock? (a) needed (b) not needed
  10. 10.True or false: a clock to check is needed for the shadow clock. (a) False (b) True
  11. 11.True or false: chalk to mark shadows is not needed for the shadow clock. (a) True (b) False
  12. 12.🧺 Do we need yeast for the shadow clock? (a) needed (b) not needed
  13. 13.🛟 While watching shadows outdoors, what must you never do? (a) mark with chalk (b) look straight at the Sun (c) sit in the shade (d) wear a cap
  14. 14.True or false: clean water is opaque. (a) False (b) True
  15. 15.⚖️ 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
  16. 16.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a mirror (b) chalk to mark shadows (c) a straight stick (d) a clock to check
  17. 17.🌞 When is a stick’s shadow the shortest? (a) early morning (b) late evening (c) at night (d) around noon
  18. 18.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) long (b) round (c) missing (d) short
  19. 19.True or false: clear glass is translucent. (a) True (b) False
  20. 20.🔦 Which of these is translucent? (a) frosted glass (b) a book (c) air (d) clear glass
  21. 21.🧺 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) turmeric powder (d) a straight stick
  22. 22.⚖️ 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) False (b) True
  23. 23.🔍 Which is the odd one out? (a) tissue paper (b) oily paper (c) butter paper (d) clean water
  24. 24.🧺 Which of these is not needed for the shadow clock? (a) a clock to check (b) chalk to mark shadows (c) a magnet (d) a straight stick
  25. 25.🔦 Which of these is opaque? (a) clean water (b) oily paper (c) clear glass (d) a book
  26. 26.True or false: a balloon is needed for the shadow clock. (a) False (b) True
  27. 27.🔍 Which is the odd one out? (a) a wooden board (b) a steel plate (c) butter paper (d) a brick
  28. 28.🧺 Do we need a mirror for the shadow clock? (a) needed (b) not needed
  29. 29.📘 Why does a shadow form? (a) an object blocks light (b) the object is cold (c) light bends round it (d) the ground is dark
  30. 30.🧺 Do we need a battery cell for the shadow clock? (a) needed (b) not needed
  31. 31.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) up (b) east (c) west (d) north
  32. 32.🧺 Do we need a straight stick for the shadow clock? (a) not needed (b) needed
  33. 33.True or false: chalk to mark shadows is needed for the shadow clock. (a) True (b) False
  34. 34.🛟 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
  35. 35.🔮 Predict: on a fully cloudy day, the sundial ___. (a) runs faster (b) works better (c) shows two times (d) does not work well
  36. 36.🔦 Is clean water opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
  37. 37.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) coloured (b) bigger (c) smaller (d) brighter
  38. 38.🔦 Is air opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
  39. 39.🔦 Is a steel plate opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
  40. 40.🔦 Which of these is opaque? (a) frosted glass (b) tissue paper (c) a brick (d) clean water

Answer key

  1. telling the time
  2. False
  3. a battery cell
  4. a wooden board
  5. opaque
  6. a mirror
  7. True
  8. butter paper
  9. not needed
  10. True
  11. False
  12. not needed
  13. look straight at the Sun
  14. False
  15. we keep it the same
  16. a mirror
  17. around noon
  18. long
  19. False
  20. frosted glass
  21. turmeric powder
  22. False
  23. clean water
  24. a magnet
  25. a book
  26. False
  27. butter paper
  28. not needed
  29. an object blocks light
  30. not needed
  31. west
  32. needed
  33. True
  34. a cap or hat
  35. does not work well
  36. transparent
  37. bigger
  38. transparent
  39. opaque
  40. a brick

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