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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 143 · 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: the Sun is low in the evening sky. The stick’s shadow is ___. (a) missing (b) round (c) long (d) short
  2. 2.🔮 Predict: on a fully cloudy day, the sundial ___. (a) shows two times (b) works better (c) runs faster (d) does not work well
  3. 3.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a balloon (c) a clock to check (d) a sunny open place
  4. 4.🧺 Do we need a balloon for the shadow clock? (a) not needed (b) needed
  5. 5.🧺 Do we need a mirror for the shadow clock? (a) needed (b) not needed
  6. 6.⚖️ 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
  7. 7.⚖️ 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) shadow length (c) the same stick (d) the stick kept upright
  8. 8.🌞 When is a stick’s shadow the shortest? (a) around noon (b) early morning (c) late evening (d) at night
  9. 9.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) west (b) north (c) east (d) up
  10. 10.True or false: a straight stick is needed for the shadow clock. (a) False (b) True
  11. 11.True or false: a book is translucent. (a) False (b) True
  12. 12.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) chalk to mark shadows (c) yeast (d) a clock to check
  13. 13.True or false: a clock to check is not needed for the shadow clock. (a) True (b) False
  14. 14.True or false: clear glass is transparent. (a) False (b) True
  15. 15.🔦 Is clear plastic film opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
  16. 16.⚖️ 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
  17. 17.🔍 Which is the odd one out? (a) clean water (b) a book (c) a steel plate (d) a brick
  18. 18.🔦 Is a book opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
  19. 19.🔍 Which is the odd one out? (a) oily paper (b) a steel plate (c) your hand (d) a book
  20. 20.True or false: frosted glass is opaque. (a) False (b) True
  21. 21.🔦 Which of these is opaque? (a) clear glass (b) butter paper (c) a brick (d) clear plastic film
  22. 22.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a straight stick (c) a clock to check (d) a magnet
  23. 23.True or false: clean water is transparent. (a) True (b) False
  24. 24.🔦 Is butter paper opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
  25. 25.True or false: air is translucent. (a) False (b) True
  26. 26.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is what we measure. (a) True (b) False
  27. 27.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) the same stick (b) the stick kept upright (c) the time of day (d) the same spot
  28. 28.⚖️ 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) True (b) False
  29. 29.🧺 Which of these is not needed for the shadow clock? (a) a clock to check (b) a straight stick (c) chalk to mark shadows (d) yeast
  30. 30.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the stick kept upright is what we measure. (a) True (b) False
  31. 31.True or false: a balloon is needed for the shadow clock. (a) True (b) False
  32. 32.⚖️ 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
  33. 33.🔦 Which of these is opaque? (a) clean water (b) oily paper (c) air (d) your hand
  34. 34.🧺 Do we need turmeric powder for the shadow clock? (a) needed (b) not needed
  35. 35.True or false: a sunny open place is not needed for the shadow clock. (a) False (b) True
  36. 36.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) a balloon (c) chalk to mark shadows (d) a sunny open place
  37. 37.📘 Why does a shadow form? (a) the ground is dark (b) the object is cold (c) an object blocks light (d) light bends round it
  38. 38.🔦 Is clean water opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
  39. 39.🔦 Is your hand opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
  40. 40.True or false: a steel plate is opaque. (a) False (b) True

Answer key

  1. long
  2. does not work well
  3. a balloon
  4. not needed
  5. not needed
  6. True
  7. shadow length
  8. around noon
  9. west
  10. True
  11. False
  12. yeast
  13. False
  14. True
  15. transparent
  16. we keep it the same
  17. clean water
  18. opaque
  19. oily paper
  20. False
  21. a brick
  22. a magnet
  23. True
  24. translucent
  25. False
  26. True
  27. the time of day
  28. True
  29. yeast
  30. False
  31. False
  32. False
  33. your hand
  34. not needed
  35. False
  36. a balloon
  37. an object blocks light
  38. transparent
  39. opaque
  40. True

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