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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 123 · 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.🔦 Is clear plastic film opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
  2. 2.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) a battery cell (c) a sunny open place (d) a clock to check
  3. 3.True or false: a straight stick is needed for the shadow clock. (a) True (b) False
  4. 4.🌞 When is a stick’s shadow the shortest? (a) around noon (b) late evening (c) early morning (d) at night
  5. 5.🔍 Which is the odd one out? (a) oily paper (b) butter paper (c) frosted glass (d) air
  6. 6.🧺 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 balloon (d) a straight stick
  7. 7.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) long (b) missing (c) round (d) short
  8. 8.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) coloured (b) brighter (c) bigger (d) smaller
  9. 9.🔦 Which of these is opaque? (a) clear plastic film (b) butter paper (c) air (d) a wooden board
  10. 10.True or false: a steel plate is opaque. (a) False (b) True
  11. 11.True or false: your hand is transparent. (a) True (b) False
  12. 12.🧺 Do we need a clock to check for the shadow clock? (a) needed (b) not needed
  13. 13.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same stick”? (a) we change it (b) we keep it the same (c) we measure it
  14. 14.True or false: a book is translucent. (a) False (b) True
  15. 15.🧺 Do we need a straight stick for the shadow clock? (a) not needed (b) needed
  16. 16.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is the one thing we change. (a) False (b) True
  17. 17.🧺 Do we need a magnet for the shadow clock? (a) needed (b) not needed
  18. 18.⚖️ 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
  19. 19.True or false: a clock to check is needed for the shadow clock. (a) False (b) True
  20. 20.🔦 Is your hand opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
  21. 21.True or false: chalk to mark shadows is not needed for the shadow clock. (a) False (b) True
  22. 22.True or false: a balloon is not needed for the shadow clock. (a) False (b) True
  23. 23.🛟 What should you wear for a long time in the hot sun? (a) a cap or hat (b) a raincoat (c) a woollen sweater (d) nothing on your head
  24. 24.🧺 Which of these is not needed for the shadow clock? (a) turmeric powder (b) a clock to check (c) a sunny open place (d) a straight stick
  25. 25.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a magnet (c) a straight stick (d) a sunny open place
  26. 26.🔦 Which of these is opaque? (a) butter paper (b) tissue paper (c) frosted glass (d) a steel plate
  27. 27.⚖️ 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) True (b) False
  28. 28.🧺 Which of these is needed for the shadow clock? (a) a balloon (b) turmeric powder (c) yeast (d) a straight stick
  29. 29.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) east (b) west (c) north (d) up
  30. 30.🧺 Do we need a mirror for the shadow clock? (a) not needed (b) needed
  31. 31.⚖️ 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) the stick kept upright (c) shadow length
  32. 32.🔦 Is frosted glass opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
  33. 33.True or false: a sunny open place is not needed for the shadow clock. (a) False (b) True
  34. 34.🛟 While watching shadows outdoors, what must you never do? (a) sit in the shade (b) wear a cap (c) look straight at the Sun (d) mark with chalk
  35. 35.🔍 Which is the odd one out? (a) a brick (b) tissue paper (c) a steel plate (d) a wooden board
  36. 36.True or false: chalk to mark shadows is needed for the shadow clock. (a) False (b) True
  37. 37.🕰️ What is a sundial used for? (a) making rainbows (b) weighing things (c) measuring rain (d) telling the time
  38. 38.🧺 Do we need yeast for the shadow clock? (a) needed (b) not needed
  39. 39.🔦 Which of these is opaque? (a) tissue paper (b) air (c) a brick (d) clean water
  40. 40.🔮 Predict: on a fully cloudy day, the sundial ___. (a) does not work well (b) works better (c) shows two times (d) runs faster

Answer key

  1. transparent
  2. a battery cell
  3. True
  4. around noon
  5. air
  6. a balloon
  7. long
  8. bigger
  9. a wooden board
  10. True
  11. False
  12. needed
  13. we keep it the same
  14. False
  15. needed
  16. False
  17. not needed
  18. shadow length
  19. True
  20. opaque
  21. False
  22. True
  23. a cap or hat
  24. turmeric powder
  25. a magnet
  26. a steel plate
  27. False
  28. a straight stick
  29. west
  30. not needed
  31. the stick kept upright
  32. translucent
  33. False
  34. look straight at the Sun
  35. tissue paper
  36. True
  37. telling the time
  38. not needed
  39. a brick
  40. does not work well

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