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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 899 · 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.

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

Answer key

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

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