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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 784 · 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.⚖️ 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
  2. 2.🛟 What should you wear for a long time in the hot sun? (a) nothing on your head (b) a cap or hat (c) a raincoat (d) a woollen sweater
  3. 3.🔦 Is your hand opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
  4. 4.⚖️ 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 stick (b) shadow length (c) the time of day (d) the same spot
  5. 5.True or false: a clock to check is not needed for the shadow clock. (a) False (b) True
  6. 6.🔦 Is clear plastic film opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
  7. 7.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same stick”? (a) we change it (b) we keep it the same (c) we measure it
  8. 8.🧺 Which of these is needed for the shadow clock? (a) a balloon (b) a battery cell (c) turmeric powder (d) a straight stick
  9. 9.True or false: a balloon is needed for the shadow clock. (a) False (b) True
  10. 10.🧺 Do we need a sunny open place for the shadow clock? (a) not needed (b) needed
  11. 11.🌞 When is a stick’s shadow the shortest? (a) early morning (b) around noon (c) at night (d) late evening
  12. 12.🔦 Is a wooden board opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
  13. 13.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) yeast (c) a clock to check (d) chalk to mark shadows
  14. 14.True or false: a mirror is not needed for the shadow clock. (a) True (b) False
  15. 15.🛟 While watching shadows outdoors, what must you never do? (a) wear a cap (b) mark with chalk (c) sit in the shade (d) look straight at the Sun
  16. 16.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a straight stick (c) a balloon (d) a sunny open place
  17. 17.🔦 Which of these is translucent? (a) a wooden board (b) a book (c) oily paper (d) air
  18. 18.🔦 Which of these is opaque? (a) clear glass (b) tissue paper (c) butter paper (d) a book
  19. 19.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) smaller (b) coloured (c) brighter (d) bigger
  20. 20.🧺 Do we need chalk to mark shadows for the shadow clock? (a) not needed (b) needed
  21. 21.True or false: a battery cell is needed for the shadow clock. (a) True (b) False
  22. 22.True or false: chalk to mark shadows is needed for the shadow clock. (a) False (b) True
  23. 23.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a sunny open place (c) a battery cell (d) a clock to check
  24. 24.🧺 Do we need a straight stick for the shadow clock? (a) not needed (b) needed
  25. 25.🧺 Do we need yeast for the shadow clock? (a) not needed (b) needed
  26. 26.True or false: clear plastic film is transparent. (a) True (b) False
  27. 27.True or false: tissue paper is transparent. (a) True (b) False
  28. 28.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a mirror (b) a sunny open place (c) a straight stick (d) a clock to check
  29. 29.🧺 Which of these is needed for the shadow clock? (a) a clock to check (b) a magnet (c) yeast (d) a mirror
  30. 30.🔦 Is a book opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
  31. 31.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) up (b) west (c) north (d) east
  32. 32.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a sunny open place (c) a straight stick (d) a mirror
  33. 33.🧺 Do we need a magnet for the shadow clock? (a) needed (b) not needed
  34. 34.🔦 Which of these is transparent? (a) oily paper (b) a book (c) a wooden board (d) clear glass
  35. 35.🔦 Is clean water opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
  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? True or false: the time of day is the one thing we change. (a) False (b) True
  38. 38.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the time of day”? (a) we measure it (b) we keep it the same (c) we change it
  39. 39.True or false: clean water is opaque. (a) True (b) False
  40. 40.📘 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

Answer key

  1. we measure it
  2. a cap or hat
  3. opaque
  4. the time of day
  5. False
  6. transparent
  7. we keep it the same
  8. a straight stick
  9. False
  10. needed
  11. around noon
  12. opaque
  13. yeast
  14. True
  15. look straight at the Sun
  16. a balloon
  17. oily paper
  18. a book
  19. bigger
  20. needed
  21. False
  22. True
  23. a battery cell
  24. needed
  25. not needed
  26. True
  27. False
  28. a mirror
  29. a clock to check
  30. opaque
  31. west
  32. a mirror
  33. not needed
  34. clear glass
  35. transparent
  36. True
  37. True
  38. we change it
  39. False
  40. an object blocks light

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