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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 117 · 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 is the odd one out? (a) frosted glass (b) clean water (c) air (d) clear glass
  2. 2.True or false: a balloon is needed for the shadow clock. (a) False (b) True
  3. 3.🕰️ What is a sundial used for? (a) telling the time (b) weighing things (c) measuring rain (d) making rainbows
  4. 4.True or false: clean water is translucent. (a) False (b) True
  5. 5.🔦 Which of these is opaque? (a) tissue paper (b) air (c) clear plastic film (d) a wooden board
  6. 6.🔦 Is oily paper opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
  7. 7.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is kept the same. (a) True (b) False
  8. 8.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) bigger (b) coloured (c) smaller (d) brighter
  9. 9.🌍 Why does the stick’s shadow move during the day? (a) the ground slides (b) Earth keeps spinning (c) the stick walks (d) the stick grows
  10. 10.🛟 While watching shadows outdoors, what must you never do? (a) sit in the shade (b) wear a cap (c) look straight at the Sun (d) mark with chalk
  11. 11.True or false: butter paper is translucent. (a) True (b) False
  12. 12.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) the stick kept upright (b) the time of day (c) the same stick (d) shadow length
  13. 13.🧺 Which of these is needed for the shadow clock? (a) turmeric powder (b) a battery cell (c) yeast (d) a straight stick
  14. 14.🔦 Is butter paper opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
  15. 15.🔦 Which of these is translucent? (a) clear glass (b) your hand (c) air (d) frosted glass
  16. 16.🔦 Is air opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
  17. 17.⚖️ 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
  18. 18.🔦 Which of these is translucent? (a) clear glass (b) a book (c) oily paper (d) your hand
  19. 19.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) the same stick (b) shadow length (c) the time of day
  20. 20.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a sunny open place (c) chalk to mark shadows (d) a balloon
  21. 21.📘 Why does a shadow form? (a) the ground is dark (b) the object is cold (c) light bends round it (d) an object blocks light
  22. 22.🔦 Is your hand opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
  23. 23.🧺 Do we need a sunny open place for the shadow clock? (a) not needed (b) needed
  24. 24.🛟 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
  25. 25.🔦 Is frosted glass opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
  26. 26.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) round (b) missing (c) short (d) long
  27. 27.⚖️ 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
  28. 28.True or false: a sunny open place is needed for the shadow clock. (a) True (b) False
  29. 29.🔦 Is a wooden board opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
  30. 30.True or false: a mirror is needed for the shadow clock. (a) True (b) False
  31. 31.⚖️ 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
  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.True or false: a wooden board is opaque. (a) True (b) False
  34. 34.True or false: a book is opaque. (a) True (b) False
  35. 35.🧺 Do we need a magnet for the shadow clock? (a) needed (b) not needed
  36. 36.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) a clock to check (c) yeast (d) chalk to mark shadows
  37. 37.⚖️ 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
  38. 38.🔦 Is a brick opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
  39. 39.🧺 Do we need chalk to mark shadows for the shadow clock? (a) not needed (b) needed
  40. 40.True or false: chalk to mark shadows is not needed for the shadow clock. (a) False (b) True

Answer key

  1. frosted glass
  2. False
  3. telling the time
  4. False
  5. a wooden board
  6. translucent
  7. False
  8. bigger
  9. Earth keeps spinning
  10. look straight at the Sun
  11. True
  12. the time of day
  13. a straight stick
  14. translucent
  15. frosted glass
  16. transparent
  17. False
  18. oily paper
  19. the same stick
  20. a balloon
  21. an object blocks light
  22. opaque
  23. needed
  24. a cap or hat
  25. translucent
  26. long
  27. we keep it the same
  28. True
  29. opaque
  30. False
  31. False
  32. True
  33. True
  34. True
  35. not needed
  36. yeast
  37. we keep it the same
  38. opaque
  39. needed
  40. False

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