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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 665 · 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 “the same spot”? (a) we change it (b) we measure it (c) we keep it the same
  2. 2.🔦 Which of these is opaque? (a) clean water (b) frosted glass (c) a book (d) oily paper
  3. 3.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “shadow length”? (a) we change it (b) we keep it the same (c) we measure it
  4. 4.🔍 Which is the odd one out? (a) a brick (b) your hand (c) a book (d) frosted glass
  5. 5.🧺 Do we need a magnet for the shadow clock? (a) needed (b) not needed
  6. 6.🔦 Is tissue paper opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
  7. 7.🧺 Do we need a clock to check for the shadow clock? (a) needed (b) not needed
  8. 8.🛟 What should you wear for a long time in the hot sun? (a) a raincoat (b) a cap or hat (c) a woollen sweater (d) nothing on your head
  9. 9.🧺 Which of these is needed for the shadow clock? (a) a magnet (b) yeast (c) a battery cell (d) chalk to mark shadows
  10. 10.🔦 Which of these is translucent? (a) clean water (b) a brick (c) butter paper (d) your hand
  11. 11.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the time of day”? (a) we keep it the same (b) we measure it (c) we change it
  12. 12.🛟 While watching shadows outdoors, what must you never do? (a) sit in the shade (b) wear a cap (c) mark with chalk (d) look straight at the Sun
  13. 13.True or false: chalk to mark shadows is needed for the shadow clock. (a) False (b) True
  14. 14.🧺 Do we need turmeric powder for the shadow clock? (a) not needed (b) needed
  15. 15.🔦 Which of these is transparent? (a) a steel plate (b) tissue paper (c) a wooden board (d) clear plastic film
  16. 16.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) bigger (b) brighter (c) smaller (d) coloured
  17. 17.🔮 Predict: on a fully cloudy day, the sundial ___. (a) shows two times (b) runs faster (c) does not work well (d) works better
  18. 18.🌞 When is a stick’s shadow the shortest? (a) early morning (b) at night (c) around noon (d) late evening
  19. 19.🧺 Do we need a mirror for the shadow clock? (a) not needed (b) needed
  20. 20.🔦 Is a book opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
  21. 21.True or false: clear glass is translucent. (a) False (b) True
  22. 22.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) round (b) short (c) long (d) missing
  23. 23.🔦 Which of these is opaque? (a) clean water (b) butter paper (c) a steel plate (d) clear plastic film
  24. 24.True or false: turmeric powder is needed for the shadow clock. (a) False (b) True
  25. 25.🕰️ What is a sundial used for? (a) telling the time (b) measuring rain (c) making rainbows (d) weighing things
  26. 26.⚖️ 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
  27. 27.🔍 Which is the odd one out? (a) air (b) a steel plate (c) clear glass (d) clear plastic film
  28. 28.True or false: a sunny open place is not needed for the shadow clock. (a) False (b) True
  29. 29.🧺 Do we need a sunny open place for the shadow clock? (a) not needed (b) needed
  30. 30.🔦 Is clean water opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
  31. 31.True or false: clear glass is transparent. (a) True (b) False
  32. 32.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) a sunny open place (c) chalk to mark shadows (d) a balloon
  33. 33.True or false: clear plastic film is transparent. (a) True (b) False
  34. 34.True or false: a mirror is needed for the shadow clock. (a) False (b) True
  35. 35.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a clock to check (c) yeast (d) chalk to mark shadows
  36. 36.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) a clock to check (c) a sunny open place (d) a magnet
  37. 37.🔍 Which is the odd one out? (a) your hand (b) a steel plate (c) a brick (d) oily paper
  38. 38.True or false: air is opaque. (a) False (b) True
  39. 39.🧺 Do we need a battery cell for the shadow clock? (a) not needed (b) needed
  40. 40.True or false: a battery cell is not needed for the shadow clock. (a) False (b) True

Answer key

  1. we keep it the same
  2. a book
  3. we measure it
  4. frosted glass
  5. not needed
  6. translucent
  7. needed
  8. a cap or hat
  9. chalk to mark shadows
  10. butter paper
  11. we change it
  12. look straight at the Sun
  13. True
  14. not needed
  15. clear plastic film
  16. bigger
  17. does not work well
  18. around noon
  19. not needed
  20. opaque
  21. False
  22. long
  23. a steel plate
  24. False
  25. telling the time
  26. False
  27. a steel plate
  28. False
  29. needed
  30. transparent
  31. True
  32. a balloon
  33. True
  34. False
  35. yeast
  36. a magnet
  37. oily paper
  38. False
  39. not needed
  40. True

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