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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 603 · 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? Which of these is kept the same? (a) the same spot (b) shadow length (c) the time of day
  2. 2.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a battery cell (b) chalk to mark shadows (c) a straight stick (d) a sunny open place
  3. 3.🧺 Which of these is needed for the shadow clock? (a) a battery cell (b) a straight stick (c) yeast (d) a mirror
  4. 4.True or false: a mirror is not needed for the shadow clock. (a) False (b) True
  5. 5.🧺 Do we need a balloon for the shadow clock? (a) needed (b) not needed
  6. 6.🔍 Which is the odd one out? (a) clean water (b) clear glass (c) air (d) a brick
  7. 7.True or false: chalk to mark shadows is needed for the shadow clock. (a) False (b) True
  8. 8.🧺 Do we need a straight stick for the shadow clock? (a) not needed (b) needed
  9. 9.⚖️ 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
  10. 10.True or false: a sunny open place is not needed for the shadow clock. (a) True (b) False
  11. 11.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a clock to check (c) chalk to mark shadows (d) yeast
  12. 12.True or false: clear glass is opaque. (a) True (b) False
  13. 13.🔦 Is clean water opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
  14. 14.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) north (b) east (c) west (d) up
  15. 15.🔦 Which of these is translucent? (a) a steel plate (b) frosted glass (c) a wooden board (d) clear plastic film
  16. 16.True or false: clear plastic film is opaque. (a) False (b) True
  17. 17.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) chalk to mark shadows (c) a straight stick (d) a magnet
  18. 18.True or false: clean water is translucent. (a) True (b) False
  19. 19.⚖️ 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
  20. 20.True or false: a balloon is needed for the shadow clock. (a) True (b) False
  21. 21.True or false: a balloon is not needed for the shadow clock. (a) True (b) False
  22. 22.⚖️ 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 spot (c) the time of day (d) the same stick
  23. 23.True or false: clear glass is translucent. (a) True (b) False
  24. 24.🧺 Do we need a sunny open place for the shadow clock? (a) needed (b) not needed
  25. 25.True or false: butter paper is translucent. (a) False (b) True
  26. 26.🔮 Predict: on a fully cloudy day, the sundial ___. (a) shows two times (b) runs faster (c) does not work well (d) works better
  27. 27.🛟 While watching shadows outdoors, what must you never do? (a) sit in the shade (b) look straight at the Sun (c) mark with chalk (d) wear a cap
  28. 28.🧺 Do we need a battery cell for the shadow clock? (a) needed (b) not needed
  29. 29.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) missing (b) long (c) short (d) round
  30. 30.🔦 Which of these is transparent? (a) a wooden board (b) oily paper (c) clear glass (d) tissue paper
  31. 31.📘 Why does a shadow form? (a) the ground is dark (b) light bends round it (c) an object blocks light (d) the object is cold
  32. 32.🧺 Do we need a magnet for the shadow clock? (a) not needed (b) needed
  33. 33.🔦 Which of these is opaque? (a) frosted glass (b) a steel plate (c) air (d) clear plastic film
  34. 34.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the stick kept upright”? (a) we change it (b) we measure it (c) we keep it the same
  35. 35.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) coloured (b) bigger (c) brighter (d) smaller
  36. 36.🔍 Which is the odd one out? (a) clear glass (b) air (c) oily paper (d) clear plastic film
  37. 37.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) a clock to check (c) chalk to mark shadows (d) turmeric powder
  38. 38.True or false: a brick is translucent. (a) True (b) False
  39. 39.🔍 Which is the odd one out? (a) a book (b) clear plastic film (c) clean water (d) clear glass
  40. 40.True or false: clean water is transparent. (a) False (b) True

Answer key

  1. the same spot
  2. a battery cell
  3. a straight stick
  4. True
  5. not needed
  6. a brick
  7. True
  8. needed
  9. we keep it the same
  10. False
  11. yeast
  12. False
  13. transparent
  14. west
  15. frosted glass
  16. False
  17. a magnet
  18. False
  19. we keep it the same
  20. False
  21. True
  22. shadow length
  23. False
  24. needed
  25. True
  26. does not work well
  27. look straight at the Sun
  28. not needed
  29. long
  30. clear glass
  31. an object blocks light
  32. not needed
  33. a steel plate
  34. we keep it the same
  35. bigger
  36. oily paper
  37. turmeric powder
  38. False
  39. a book
  40. True

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