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Shadow and Sundial Experiment Worksheet

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

Answer key

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

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