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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 23 · 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) look straight at the Sun (b) mark with chalk (c) sit in the shade (d) wear a cap
  2. 2.True or false: yeast is needed for the shadow clock. (a) False (b) True
  3. 3.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) smaller (b) brighter (c) coloured (d) bigger
  4. 4.True or false: oily paper is translucent. (a) False (b) True
  5. 5.🛟 What should you wear for a long time in the hot sun? (a) nothing on your head (b) a cap or hat (c) a woollen sweater (d) a raincoat
  6. 6.🧺 Do we need a balloon for the shadow clock? (a) needed (b) not needed
  7. 7.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) north (b) east (c) west (d) up
  8. 8.🔍 Which is the odd one out? (a) air (b) clear glass (c) clean water (d) a book
  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 measure it (b) we change it (c) we keep it the same
  10. 10.🔦 Which of these is opaque? (a) clear plastic film (b) butter paper (c) a book (d) oily paper
  11. 11.📘 Why does a shadow form? (a) the ground is dark (b) light bends round it (c) the object is cold (d) an object blocks light
  12. 12.🧺 Which of these is needed for the shadow clock? (a) a magnet (b) a battery cell (c) a balloon (d) a straight stick
  13. 13.True or false: yeast is not needed for the shadow clock. (a) False (b) True
  14. 14.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “shadow length”? (a) we change it (b) we keep it the same (c) we measure it
  15. 15.True or false: clean water is opaque. (a) True (b) False
  16. 16.🔦 Which of these is opaque? (a) air (b) tissue paper (c) butter paper (d) a wooden board
  17. 17.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is what we measure. (a) False (b) True
  18. 18.🧺 Which of these is needed for the shadow clock? (a) a sunny open place (b) a battery cell (c) a balloon (d) yeast
  19. 19.🧺 Which of these is needed for the shadow clock? (a) yeast (b) a mirror (c) a clock to check (d) a balloon
  20. 20.🧺 Do we need a straight stick for the shadow clock? (a) needed (b) not needed
  21. 21.🔮 Predict: on a fully cloudy day, the sundial ___. (a) shows two times (b) does not work well (c) works better (d) runs faster
  22. 22.🔍 Which is the odd one out? (a) air (b) clear glass (c) a wooden board (d) clear plastic film
  23. 23.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same spot”? (a) we keep it the same (b) we measure it (c) we change it
  24. 24.🌞 When is a stick’s shadow the shortest? (a) around noon (b) at night (c) late evening (d) early morning
  25. 25.🧺 Do we need a magnet for the shadow clock? (a) needed (b) not needed
  26. 26.True or false: clear glass is opaque. (a) False (b) True
  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 stick kept upright (b) the same stick (c) shadow length (d) the time of day
  28. 28.🧺 Which of these is not needed for the shadow clock? (a) a clock to check (b) a magnet (c) chalk to mark shadows (d) a sunny open place
  29. 29.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the time of day”? (a) we change it (b) we measure it (c) we keep it the same
  30. 30.True or false: chalk to mark shadows is needed for the shadow clock. (a) True (b) False
  31. 31.🔦 Which of these is opaque? (a) frosted glass (b) a brick (c) butter paper (d) tissue paper
  32. 32.True or false: a book is transparent. (a) True (b) False
  33. 33.🕰️ What is a sundial used for? (a) measuring rain (b) weighing things (c) telling the time (d) making rainbows
  34. 34.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a sunny open place (c) a clock to check (d) turmeric powder
  35. 35.⚖️ 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) False (b) True
  36. 36.🔦 Is clean water opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
  37. 37.🧺 Do we need yeast for the shadow clock? (a) needed (b) not needed
  38. 38.⚖️ 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
  39. 39.🔦 Which of these is translucent? (a) clear glass (b) frosted glass (c) clean water (d) clear plastic film
  40. 40.🔍 Which is the odd one out? (a) a wooden board (b) clear plastic film (c) your hand (d) a brick

Answer key

  1. look straight at the Sun
  2. False
  3. bigger
  4. True
  5. a cap or hat
  6. not needed
  7. west
  8. a book
  9. we keep it the same
  10. a book
  11. an object blocks light
  12. a straight stick
  13. True
  14. we measure it
  15. False
  16. a wooden board
  17. True
  18. a sunny open place
  19. a clock to check
  20. needed
  21. does not work well
  22. a wooden board
  23. we keep it the same
  24. around noon
  25. not needed
  26. False
  27. the time of day
  28. a magnet
  29. we change it
  30. True
  31. a brick
  32. False
  33. telling the time
  34. turmeric powder
  35. False
  36. transparent
  37. not needed
  38. True
  39. frosted glass
  40. clear plastic film

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