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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 369 · 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.🕰️ What is a sundial used for? (a) making rainbows (b) measuring rain (c) weighing things (d) telling the time
  2. 2.True or false: clear glass is translucent. (a) True (b) False
  3. 3.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) smaller (b) bigger (c) coloured (d) brighter
  4. 4.🔦 Is frosted glass opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
  5. 5.True or false: turmeric powder is not needed for the shadow clock. (a) True (b) False
  6. 6.🔦 Is tissue paper opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
  7. 7.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) long (b) round (c) missing (d) short
  8. 8.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) chalk to mark shadows (c) a mirror (d) a sunny open place
  9. 9.True or false: chalk to mark shadows is not needed for the shadow clock. (a) False (b) True
  10. 10.🛟 While watching shadows outdoors, what must you never do? (a) sit in the shade (b) wear a cap (c) mark with chalk (d) look straight at the Sun
  11. 11.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is kept the same. (a) True (b) False
  12. 12.🔦 Is a steel plate opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
  13. 13.⚖️ 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 spot (b) the time of day (c) the stick kept upright (d) shadow length
  14. 14.🔮 Predict: on a fully cloudy day, the sundial ___. (a) works better (b) runs faster (c) shows two times (d) does not work well
  15. 15.📘 Why does a shadow form? (a) an object blocks light (b) the object is cold (c) the ground is dark (d) light bends round it
  16. 16.🛟 What should you wear for a long time in the hot sun? (a) a cap or hat (b) a woollen sweater (c) a raincoat (d) nothing on your head
  17. 17.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) chalk to mark shadows (c) a clock to check (d) turmeric powder
  18. 18.🧺 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 balloon (d) a sunny open place
  19. 19.True or false: a straight stick is needed for the shadow clock. (a) False (b) True
  20. 20.⚖️ 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 keep it the same (c) we measure it
  21. 21.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a straight stick (c) yeast (d) a clock to check
  22. 22.True or false: a battery cell is not needed for the shadow clock. (a) True (b) False
  23. 23.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a mirror (b) chalk to mark shadows (c) a sunny open place (d) a straight stick
  24. 24.True or false: a book is translucent. (a) False (b) True
  25. 25.🔦 Which of these is opaque? (a) air (b) frosted glass (c) clear glass (d) a brick
  26. 26.🔍 Which is the odd one out? (a) a wooden board (b) your hand (c) a brick (d) butter paper
  27. 27.🔍 Which is the odd one out? (a) a steel plate (b) frosted glass (c) butter paper (d) oily paper
  28. 28.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) up (b) east (c) north (d) west
  29. 29.⚖️ 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
  30. 30.🔍 Which is the odd one out? (a) clear glass (b) a brick (c) a book (d) a wooden board
  31. 31.⚖️ 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
  32. 32.🌞 When is a stick’s shadow the shortest? (a) late evening (b) at night (c) early morning (d) around noon
  33. 33.True or false: a clock to check is not needed for the shadow clock. (a) True (b) False
  34. 34.🔍 Which is the odd one out? (a) clear glass (b) a wooden board (c) clear plastic film (d) air
  35. 35.🧺 Do we need a sunny open place for the shadow clock? (a) not needed (b) needed
  36. 36.🔍 Which is the odd one out? (a) clean water (b) a wooden board (c) a steel plate (d) a brick
  37. 37.True or false: a sunny open place is needed for the shadow clock. (a) False (b) True
  38. 38.🧺 Do we need a mirror for the shadow clock? (a) needed (b) not needed
  39. 39.⚖️ 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 change it (c) we keep it the same
  40. 40.True or false: tissue paper is transparent. (a) True (b) False

Answer key

  1. telling the time
  2. False
  3. bigger
  4. translucent
  5. True
  6. translucent
  7. long
  8. a mirror
  9. False
  10. look straight at the Sun
  11. True
  12. opaque
  13. the time of day
  14. does not work well
  15. an object blocks light
  16. a cap or hat
  17. turmeric powder
  18. a balloon
  19. True
  20. we keep it the same
  21. yeast
  22. True
  23. a mirror
  24. False
  25. a brick
  26. butter paper
  27. a steel plate
  28. west
  29. True
  30. clear glass
  31. we keep it the same
  32. around noon
  33. False
  34. a wooden board
  35. needed
  36. clean water
  37. True
  38. not needed
  39. we keep it the same
  40. False

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