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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 71 · 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) works better (c) runs faster (d) shows two times
  2. 2.🛟 While watching shadows outdoors, what must you never do? (a) mark with chalk (b) sit in the shade (c) look straight at the Sun (d) wear a cap
  3. 3.🛟 What should you wear for a long time in the hot sun? (a) a woollen sweater (b) nothing on your head (c) a raincoat (d) a cap or hat
  4. 4.🧺 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 mirror
  5. 5.⚖️ 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
  6. 6.🧺 Which of these is needed for the shadow clock? (a) a straight stick (b) a battery cell (c) yeast (d) a magnet
  7. 7.🔦 Which of these is opaque? (a) air (b) frosted glass (c) butter paper (d) a brick
  8. 8.🔍 Which is the odd one out? (a) clear glass (b) frosted glass (c) oily paper (d) butter paper
  9. 9.🔦 Is a steel plate opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
  10. 10.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) yeast (c) a sunny open place (d) a straight stick
  11. 11.True or false: a magnet is needed for the shadow clock. (a) True (b) False
  12. 12.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a clock to check (c) chalk to mark shadows (d) a mirror
  13. 13.🌍 Why does the stick’s shadow move during the day? (a) the ground slides (b) the stick walks (c) the stick grows (d) Earth keeps spinning
  14. 14.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) chalk to mark shadows (c) a clock to check (d) yeast
  15. 15.🧺 Which of these is needed for the shadow clock? (a) a magnet (b) turmeric powder (c) chalk to mark shadows (d) yeast
  16. 16.🔦 Is tissue paper opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
  17. 17.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is what we measure. (a) False (b) True
  18. 18.True or false: clean water is transparent. (a) True (b) False
  19. 19.🧺 Do we need a straight stick for the shadow clock? (a) not needed (b) needed
  20. 20.True or false: your hand is opaque. (a) True (b) False
  21. 21.True or false: a mirror is needed for the shadow clock. (a) True (b) False
  22. 22.🔦 Is air opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
  23. 23.⚖️ 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
  24. 24.True or false: oily paper is translucent. (a) True (b) False
  25. 25.🔦 Is a brick opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
  26. 26.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a clock to check (c) a straight stick (d) a magnet
  27. 27.🔦 Which of these is opaque? (a) butter paper (b) your hand (c) frosted glass (d) clear glass
  28. 28.True or false: a straight stick is needed for the shadow clock. (a) False (b) True
  29. 29.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) a magnet (c) chalk to mark shadows (d) a sunny open place
  30. 30.🧺 Do we need a clock to check for the shadow clock? (a) not needed (b) needed
  31. 31.🕰️ What is a sundial used for? (a) measuring rain (b) weighing things (c) telling the time (d) making rainbows
  32. 32.🔦 Is oily paper opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
  33. 33.True or false: a wooden board is opaque. (a) True (b) False
  34. 34.⚖️ 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) False (b) True
  35. 35.🧺 Do we need a balloon for the shadow clock? (a) needed (b) not needed
  36. 36.🧺 Which of these is not needed for the shadow clock? (a) a balloon (b) a clock to check (c) a straight stick (d) chalk to mark shadows
  37. 37.🧺 Do we need a magnet for the shadow clock? (a) not needed (b) needed
  38. 38.🧺 Do we need a sunny open place for the shadow clock? (a) not needed (b) needed
  39. 39.True or false: a sunny open place is needed for the shadow clock. (a) True (b) False
  40. 40.📘 Why does a shadow form? (a) an object blocks light (b) the object is cold (c) the ground is dark (d) light bends round it

Answer key

  1. does not work well
  2. look straight at the Sun
  3. a cap or hat
  4. a mirror
  5. we keep it the same
  6. a straight stick
  7. a brick
  8. clear glass
  9. opaque
  10. yeast
  11. False
  12. a mirror
  13. Earth keeps spinning
  14. yeast
  15. chalk to mark shadows
  16. translucent
  17. False
  18. True
  19. needed
  20. True
  21. False
  22. transparent
  23. we measure it
  24. True
  25. opaque
  26. a magnet
  27. your hand
  28. True
  29. a magnet
  30. needed
  31. telling the time
  32. translucent
  33. True
  34. False
  35. not needed
  36. a balloon
  37. not needed
  38. needed
  39. True
  40. an object blocks light

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