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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 949 · 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? True or false: the time of day is the one thing we change. (a) False (b) True
  2. 2.🧺 Do we need a straight stick for the shadow clock? (a) not needed (b) needed
  3. 3.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) coloured (b) bigger (c) smaller (d) brighter
  4. 4.🧺 Which of these is needed for the shadow clock? (a) a clock to check (b) a battery cell (c) turmeric powder (d) yeast
  5. 5.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is kept the same. (a) False (b) True
  6. 6.🧺 Do we need a magnet for the shadow clock? (a) not needed (b) needed
  7. 7.🔮 Predict: on a fully cloudy day, the sundial ___. (a) shows two times (b) runs faster (c) works better (d) does not work well
  8. 8.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same spot”? (a) we keep it the same (b) we measure it (c) we change it
  9. 9.True or false: a wooden board is translucent. (a) True (b) False
  10. 10.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the stick kept upright is the one thing we change. (a) True (b) False
  11. 11.🛟 While watching shadows outdoors, what must you never do? (a) look straight at the Sun (b) sit in the shade (c) mark with chalk (d) wear a cap
  12. 12.🔍 Which is the odd one out? (a) oily paper (b) air (c) frosted glass (d) tissue paper
  13. 13.🛟 What should you wear for a long time in the hot sun? (a) a cap or hat (b) nothing on your head (c) a woollen sweater (d) a raincoat
  14. 14.🌞 When is a stick’s shadow the shortest? (a) around noon (b) late evening (c) early morning (d) at night
  15. 15.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a balloon (c) chalk to mark shadows (d) a clock to check
  16. 16.🔦 Which of these is opaque? (a) clear glass (b) frosted glass (c) oily paper (d) a book
  17. 17.🕰️ What is a sundial used for? (a) weighing things (b) measuring rain (c) making rainbows (d) telling the time
  18. 18.True or false: a clock to check is needed for the shadow clock. (a) True (b) False
  19. 19.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) a clock to check (c) chalk to mark shadows (d) a battery cell
  20. 20.🧺 Do we need yeast for the shadow clock? (a) needed (b) not needed
  21. 21.🧺 Do we need a sunny open place for the shadow clock? (a) not needed (b) needed
  22. 22.🧺 Do we need chalk to mark shadows for the shadow clock? (a) not needed (b) needed
  23. 23.True or false: a clock to check is not needed for the shadow clock. (a) True (b) False
  24. 24.True or false: clear glass is transparent. (a) True (b) False
  25. 25.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a clock to check (c) a magnet (d) a sunny open place
  26. 26.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) long (b) round (c) missing (d) short
  27. 27.🔦 Which of these is transparent? (a) your hand (b) a brick (c) clear glass (d) a steel plate
  28. 28.🔦 Is a brick opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
  29. 29.True or false: a sunny open place is needed for the shadow clock. (a) False (b) True
  30. 30.True or false: clear plastic film is translucent. (a) True (b) False
  31. 31.⚖️ 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 stick kept upright (c) shadow length (d) the same spot
  32. 32.🔦 Which of these is opaque? (a) oily paper (b) butter paper (c) a steel plate (d) clear glass
  33. 33.🧺 Which of these is needed for the shadow clock? (a) chalk to mark shadows (b) turmeric powder (c) a magnet (d) a mirror
  34. 34.True or false: frosted glass is transparent. (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 sunny open place (c) chalk to mark shadows (d) yeast
  36. 36.🧺 Do we need turmeric powder for the shadow clock? (a) not needed (b) needed
  37. 37.🔦 Is air opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
  38. 38.True or false: a wooden board is opaque. (a) False (b) True
  39. 39.🧺 Which of these is needed for the shadow clock? (a) a straight stick (b) yeast (c) a balloon (d) a magnet
  40. 40.🔦 Is butter paper opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent

Answer key

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

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