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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 744 · 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.🧺 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) chalk to mark shadows
  2. 2.🔦 Which of these is opaque? (a) tissue paper (b) frosted glass (c) clean water (d) a book
  3. 3.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “shadow length”? (a) we measure it (b) we keep it the same (c) we change it
  4. 4.🔮 Predict: on a fully cloudy day, the sundial ___. (a) works better (b) shows two times (c) does not work well (d) runs faster
  5. 5.True or false: turmeric powder is not needed for the shadow clock. (a) True (b) False
  6. 6.True or false: tissue paper is opaque. (a) False (b) True
  7. 7.🔦 Is clean water opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
  8. 8.True or false: chalk to mark shadows is needed for the shadow clock. (a) True (b) False
  9. 9.🛟 While watching shadows outdoors, what must you never do? (a) sit in the shade (b) mark with chalk (c) look straight at the Sun (d) wear a cap
  10. 10.🔦 Which of these is translucent? (a) frosted glass (b) a brick (c) a wooden board (d) clean water
  11. 11.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same spot”? (a) we change it (b) we keep it the same (c) we measure it
  12. 12.🔍 Which is the odd one out? (a) air (b) a book (c) a steel plate (d) a brick
  13. 13.True or false: a sunny open place is not needed for the shadow clock. (a) False (b) True
  14. 14.🔦 Is air opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
  15. 15.🧺 Which of these is not needed for the shadow clock? (a) a clock to check (b) a mirror (c) a sunny open place (d) a straight stick
  16. 16.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the time of day is kept the same. (a) True (b) False
  17. 17.🌍 Why does the stick’s shadow move during the day? (a) the stick walks (b) the ground slides (c) the stick grows (d) Earth keeps spinning
  18. 18.🔍 Which is the odd one out? (a) a book (b) a brick (c) butter paper (d) your hand
  19. 19.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) round (b) long (c) missing (d) short
  20. 20.True or false: a steel plate is translucent. (a) False (b) True
  21. 21.🕰️ What is a sundial used for? (a) telling the time (b) making rainbows (c) measuring rain (d) weighing things
  22. 22.True or false: oily paper is translucent. (a) False (b) True
  23. 23.⚖️ 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 same stick (c) the time of day
  24. 24.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) the stick kept upright (b) shadow length (c) the same stick (d) the time of day
  25. 25.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) shadow length (b) the same stick (c) the time of day (d) the same spot
  26. 26.True or false: tissue paper is translucent. (a) False (b) True
  27. 27.True or false: clean water is transparent. (a) True (b) False
  28. 28.True or false: clean water is translucent. (a) True (b) False
  29. 29.🧺 Do we need a sunny open place for the shadow clock? (a) not needed (b) needed
  30. 30.🧺 Do we need yeast for the shadow clock? (a) not needed (b) needed
  31. 31.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) smaller (b) coloured (c) brighter (d) bigger
  32. 32.🔦 Is butter paper opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
  33. 33.🧺 Do we need a clock to check for the shadow clock? (a) needed (b) not needed
  34. 34.True or false: a clock to check is needed for the shadow clock. (a) True (b) False
  35. 35.🔦 Is a steel plate opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
  36. 36.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a battery cell (c) a straight stick (d) a clock to check
  37. 37.🛟 What should you wear for a long time in the hot sun? (a) a woollen sweater (b) a raincoat (c) nothing on your head (d) a cap or hat
  38. 38.🧺 Which of these is needed for the shadow clock? (a) a magnet (b) a mirror (c) turmeric powder (d) a sunny open place
  39. 39.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) north (b) west (c) up (d) east
  40. 40.🧺 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) yeast (d) a straight stick

Answer key

  1. a mirror
  2. a book
  3. we measure it
  4. does not work well
  5. True
  6. False
  7. transparent
  8. True
  9. look straight at the Sun
  10. frosted glass
  11. we keep it the same
  12. air
  13. False
  14. transparent
  15. a mirror
  16. False
  17. Earth keeps spinning
  18. butter paper
  19. long
  20. False
  21. telling the time
  22. True
  23. the same stick
  24. shadow length
  25. the time of day
  26. True
  27. True
  28. False
  29. needed
  30. not needed
  31. bigger
  32. translucent
  33. needed
  34. True
  35. opaque
  36. a battery cell
  37. a cap or hat
  38. a sunny open place
  39. west
  40. yeast

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