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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 403 · 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.📘 Why does a shadow form? (a) the object is cold (b) the ground is dark (c) an object blocks light (d) light bends round it
  2. 2.True or false: yeast is needed for the shadow clock. (a) False (b) True
  3. 3.🔍 Which is the odd one out? (a) clean water (b) a wooden board (c) a steel plate (d) a brick
  4. 4.🔦 Which of these is transparent? (a) a steel plate (b) clean water (c) your hand (d) a wooden board
  5. 5.🔦 Is clean water opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
  6. 6.🕰️ What is a sundial used for? (a) measuring rain (b) weighing things (c) making rainbows (d) telling the time
  7. 7.🔮 Predict: on a fully cloudy day, the sundial ___. (a) runs faster (b) shows two times (c) works better (d) does not work well
  8. 8.True or false: a mirror is needed for the shadow clock. (a) False (b) True
  9. 9.True or false: air is transparent. (a) False (b) True
  10. 10.🔦 Is clear glass opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
  11. 11.🧺 Do we need a battery cell for the shadow clock? (a) not needed (b) needed
  12. 12.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) the same stick (b) the stick kept upright (c) the same spot (d) shadow length
  13. 13.🧺 Do we need turmeric powder for the shadow clock? (a) needed (b) not needed
  14. 14.🛟 While watching shadows outdoors, what must you never do? (a) sit in the shade (b) mark with chalk (c) wear a cap (d) look straight at the Sun
  15. 15.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) up (b) north (c) east (d) west
  16. 16.🔦 Is air opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
  17. 17.🔍 Which is the odd one out? (a) clear glass (b) oily paper (c) clean water (d) clear plastic film
  18. 18.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the stick kept upright”? (a) we keep it the same (b) we change it (c) we measure it
  19. 19.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same stick”? (a) we measure it (b) we change it (c) we keep it the same
  20. 20.True or false: yeast is not needed for the shadow clock. (a) True (b) False
  21. 21.🔦 Which of these is opaque? (a) clear plastic film (b) butter paper (c) a wooden board (d) tissue paper
  22. 22.True or false: a brick is opaque. (a) False (b) True
  23. 23.🔦 Is butter paper opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
  24. 24.⚖️ 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
  25. 25.🌍 Why does the stick’s shadow move during the day? (a) the stick walks (b) the stick grows (c) Earth keeps spinning (d) the ground slides
  26. 26.🔦 Which of these is translucent? (a) frosted glass (b) your hand (c) clear glass (d) a brick
  27. 27.⚖️ 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) True (b) False
  28. 28.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) the time of day (b) shadow length (c) the stick kept upright
  29. 29.⚖️ 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
  30. 30.🔍 Which is the odd one out? (a) butter paper (b) a steel plate (c) a book (d) a wooden board
  31. 31.🌞 When is a stick’s shadow the shortest? (a) at night (b) late evening (c) early morning (d) around noon
  32. 32.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a balloon (c) a straight stick (d) a clock to check
  33. 33.🔦 Which of these is transparent? (a) air (b) a book (c) a steel plate (d) your hand
  34. 34.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is kept the same. (a) True (b) False
  35. 35.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) long (b) round (c) short (d) missing
  36. 36.🧺 Do we need a mirror for the shadow clock? (a) not needed (b) needed
  37. 37.True or false: your hand is opaque. (a) False (b) True
  38. 38.True or false: turmeric powder is not needed for the shadow clock. (a) True (b) False
  39. 39.⚖️ 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
  40. 40.🧺 Do we need chalk to mark shadows for the shadow clock? (a) needed (b) not needed

Answer key

  1. an object blocks light
  2. False
  3. clean water
  4. clean water
  5. transparent
  6. telling the time
  7. does not work well
  8. False
  9. True
  10. transparent
  11. not needed
  12. shadow length
  13. not needed
  14. look straight at the Sun
  15. west
  16. transparent
  17. oily paper
  18. we keep it the same
  19. we keep it the same
  20. True
  21. a wooden board
  22. True
  23. translucent
  24. False
  25. Earth keeps spinning
  26. frosted glass
  27. False
  28. the stick kept upright
  29. True
  30. butter paper
  31. around noon
  32. a balloon
  33. air
  34. True
  35. long
  36. not needed
  37. True
  38. True
  39. we keep it the same
  40. needed

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