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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 741 · 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.🔮 Predict: on a fully cloudy day, the sundial ___. (a) does not work well (b) shows two times (c) runs faster (d) works better
  2. 2.True or false: air is opaque. (a) True (b) False
  3. 3.🔍 Which is the odd one out? (a) a steel plate (b) a wooden board (c) a book (d) oily paper
  4. 4.🧺 Do we need chalk to mark shadows for the shadow clock? (a) not needed (b) needed
  5. 5.True or false: air is translucent. (a) True (b) False
  6. 6.🔦 Which of these is translucent? (a) clear plastic film (b) frosted glass (c) a steel plate (d) your hand
  7. 7.🧺 Do we need a balloon for the shadow clock? (a) needed (b) not needed
  8. 8.🔦 Which of these is opaque? (a) butter paper (b) clean water (c) clear plastic film (d) your hand
  9. 9.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) the time of day (b) the same spot (c) the stick kept upright (d) shadow length
  10. 10.🛟 While watching shadows outdoors, what must you never do? (a) look straight at the Sun (b) wear a cap (c) mark with chalk (d) sit in the shade
  11. 11.⚖️ 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 keep it the same (c) we change it
  12. 12.🧺 Which of these is needed for the shadow clock? (a) a straight stick (b) a mirror (c) a magnet (d) a balloon
  13. 13.True or false: a battery cell is needed for the shadow clock. (a) False (b) True
  14. 14.🔍 Which is the odd one out? (a) a steel plate (b) a wooden board (c) your hand (d) butter paper
  15. 15.⚖️ 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) True (b) False
  16. 16.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a straight stick (c) a battery cell (d) a sunny open place
  17. 17.🛟 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
  18. 18.🌞 When is a stick’s shadow the shortest? (a) at night (b) late evening (c) around noon (d) early morning
  19. 19.🧺 Do we need a mirror for the shadow clock? (a) needed (b) not needed
  20. 20.🕰️ What is a sundial used for? (a) measuring rain (b) weighing things (c) making rainbows (d) telling the time
  21. 21.🔦 Which of these is transparent? (a) butter paper (b) a book (c) clear glass (d) a steel plate
  22. 22.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) a mirror (c) chalk to mark shadows (d) a straight stick
  23. 23.🌍 Why does the stick’s shadow move during the day? (a) Earth keeps spinning (b) the ground slides (c) the stick grows (d) the stick walks
  24. 24.True or false: yeast is not needed for the shadow clock. (a) True (b) False
  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) the same stick (b) the time of day (c) the same spot (d) shadow length
  26. 26.🔦 Is clear glass opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
  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.🔦 Which of these is translucent? (a) clear glass (b) butter paper (c) a book (d) a brick
  29. 29.🧺 Which of these is not needed for the shadow clock? (a) a clock to check (b) a sunny open place (c) a straight stick (d) turmeric powder
  30. 30.🔦 Which of these is opaque? (a) butter paper (b) a steel plate (c) tissue paper (d) clear plastic film
  31. 31.True or false: a balloon is needed for the shadow clock. (a) False (b) True
  32. 32.🧺 Do we need a sunny open place for the shadow clock? (a) needed (b) not needed
  33. 33.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) long (b) missing (c) round (d) short
  34. 34.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) yeast (c) a straight stick (d) chalk to mark shadows
  35. 35.True or false: a clock to check is not needed for the shadow clock. (a) True (b) False
  36. 36.🔦 Is air opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
  37. 37.🧺 Do we need yeast for the shadow clock? (a) needed (b) not needed
  38. 38.True or false: a steel plate is translucent. (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 stick kept upright”? (a) we measure it (b) we change it (c) we keep it the same
  40. 40.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is kept the same. (a) True (b) False

Answer key

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

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