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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 79 · 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.🛟 While watching shadows outdoors, what must you never do? (a) mark with chalk (b) sit in the shade (c) wear a cap (d) look straight at the Sun
  2. 2.🔦 Is air opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
  3. 3.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is what we measure. (a) False (b) True
  4. 4.True or false: a straight stick is needed for the shadow clock. (a) True (b) False
  5. 5.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the stick kept upright is kept the same. (a) False (b) True
  6. 6.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same stick”? (a) we keep it the same (b) we change it (c) we measure it
  7. 7.🧺 Which of these is not needed for the shadow clock? (a) a magnet (b) a straight stick (c) chalk to mark shadows (d) a sunny open place
  8. 8.True or false: yeast is needed for the shadow clock. (a) False (b) True
  9. 9.🧺 Do we need a clock to check for the shadow clock? (a) needed (b) not needed
  10. 10.🧺 Do we need a battery cell for the shadow clock? (a) needed (b) not needed
  11. 11.True or false: chalk to mark shadows is needed for the shadow clock. (a) False (b) True
  12. 12.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a straight stick (c) a balloon (d) a clock to check
  13. 13.True or false: a sunny open place is needed for the shadow clock. (a) True (b) False
  14. 14.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is kept the same. (a) False (b) True
  15. 15.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “shadow length”? (a) we measure it (b) we keep it the same (c) we change it
  16. 16.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) the same stick (b) the time of day (c) shadow length
  17. 17.True or false: a mirror is not needed for the shadow clock. (a) False (b) True
  18. 18.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a straight stick (c) a sunny open place (d) a magnet
  19. 19.True or false: a sunny open place is not needed for the shadow clock. (a) False (b) True
  20. 20.🔮 Predict: on a fully cloudy day, the sundial ___. (a) runs faster (b) works better (c) shows two times (d) does not work well
  21. 21.🔍 Which is the odd one out? (a) clear glass (b) oily paper (c) tissue paper (d) butter paper
  22. 22.🔦 Is clear glass opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
  23. 23.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) brighter (b) coloured (c) smaller (d) bigger
  24. 24.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the stick kept upright”? (a) we keep it the same (b) we change it (c) we measure it
  25. 25.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is kept the same. (a) True (b) False
  26. 26.⚖️ 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
  27. 27.🌍 Why does the stick’s shadow move during the day? (a) the stick walks (b) the stick grows (c) Earth keeps spinning (d) the ground slides
  28. 28.🧺 Do we need a balloon for the shadow clock? (a) not needed (b) needed
  29. 29.True or false: a battery cell is not needed for the shadow clock. (a) False (b) True
  30. 30.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) short (b) round (c) long (d) missing
  31. 31.🧺 Do we need turmeric powder for the shadow clock? (a) needed (b) not needed
  32. 32.True or false: a mirror is needed for the shadow clock. (a) True (b) False
  33. 33.🔍 Which is the odd one out? (a) clear glass (b) clear plastic film (c) clean water (d) a book
  34. 34.🧺 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) turmeric powder
  35. 35.🛟 What should you wear for a long time in the hot sun? (a) a raincoat (b) nothing on your head (c) a cap or hat (d) a woollen sweater
  36. 36.True or false: a clock to check is not needed for the shadow clock. (a) False (b) True
  37. 37.🔍 Which is the odd one out? (a) air (b) clear glass (c) a wooden board (d) clean water
  38. 38.🔦 Which of these is translucent? (a) clear glass (b) clean water (c) frosted glass (d) a wooden board
  39. 39.🧺 Which of these is needed for the shadow clock? (a) a straight stick (b) a battery cell (c) a balloon (d) turmeric powder
  40. 40.🔦 Which of these is opaque? (a) oily paper (b) frosted glass (c) a steel plate (d) air

Answer key

  1. look straight at the Sun
  2. transparent
  3. False
  4. True
  5. True
  6. we keep it the same
  7. a magnet
  8. False
  9. needed
  10. not needed
  11. True
  12. a balloon
  13. True
  14. True
  15. we measure it
  16. the same stick
  17. True
  18. a magnet
  19. False
  20. does not work well
  21. clear glass
  22. transparent
  23. bigger
  24. we keep it the same
  25. False
  26. we change it
  27. Earth keeps spinning
  28. not needed
  29. True
  30. long
  31. not needed
  32. False
  33. a book
  34. turmeric powder
  35. a cap or hat
  36. False
  37. a wooden board
  38. frosted glass
  39. a straight stick
  40. a steel plate

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