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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 99 · 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.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a battery cell (b) a sunny open place (c) chalk to mark shadows (d) a straight stick
  2. 2.⚖️ 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
  3. 3.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) bigger (b) coloured (c) brighter (d) smaller
  4. 4.True or false: a balloon is not needed for the shadow clock. (a) True (b) False
  5. 5.📘 Why does a shadow form? (a) light bends round it (b) the object is cold (c) the ground is dark (d) an object blocks light
  6. 6.🌍 Why does the stick’s shadow move during the day? (a) Earth keeps spinning (b) the stick grows (c) the ground slides (d) the stick walks
  7. 7.True or false: oily paper is opaque. (a) False (b) True
  8. 8.🌞 When is a stick’s shadow the shortest? (a) early morning (b) around noon (c) at night (d) late evening
  9. 9.🔦 Which of these is transparent? (a) clean water (b) a brick (c) a wooden board (d) oily paper
  10. 10.🔦 Is butter paper opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
  11. 11.🔍 Which is the odd one out? (a) your hand (b) air (c) clean water (d) clear glass
  12. 12.🧺 Which of these is needed for the shadow clock? (a) yeast (b) a mirror (c) turmeric powder (d) a straight stick
  13. 13.🔦 Is a steel plate opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
  14. 14.True or false: clear glass is transparent. (a) True (b) False
  15. 15.⚖️ 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
  16. 16.🔮 Predict: on a fully cloudy day, the sundial ___. (a) does not work well (b) runs faster (c) shows two times (d) works better
  17. 17.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a straight stick (c) yeast (d) a clock to check
  18. 18.🔍 Which is the odd one out? (a) clear plastic film (b) butter paper (c) clean water (d) air
  19. 19.🧺 Do we need a battery cell for the shadow clock? (a) not needed (b) needed
  20. 20.True or false: a magnet is needed for the shadow clock. (a) True (b) False
  21. 21.🛟 What should you wear for a long time in the hot sun? (a) a raincoat (b) a cap or hat (c) nothing on your head (d) a woollen sweater
  22. 22.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a mirror (c) a sunny open place (d) a clock to check
  23. 23.True or false: clean water is opaque. (a) False (b) True
  24. 24.True or false: butter paper is opaque. (a) True (b) False
  25. 25.🔍 Which is the odd one out? (a) clean water (b) a brick (c) a book (d) a wooden board
  26. 26.🔦 Is clear plastic film opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
  27. 27.🔦 Which of these is translucent? (a) air (b) a wooden board (c) frosted glass (d) a book
  28. 28.⚖️ 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 time of day (c) the same spot (d) the stick kept upright
  29. 29.True or false: tissue paper is opaque. (a) False (b) True
  30. 30.🧺 Which of these is needed for the shadow clock? (a) a magnet (b) yeast (c) turmeric powder (d) a sunny open place
  31. 31.🛟 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
  32. 32.🔦 Which of these is opaque? (a) frosted glass (b) a book (c) oily paper (d) clean water
  33. 33.⚖️ 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
  34. 34.🧺 Which of these is needed for the shadow clock? (a) turmeric powder (b) chalk to mark shadows (c) a magnet (d) a balloon
  35. 35.True or false: a straight stick is needed for the shadow clock. (a) False (b) True
  36. 36.🔍 Which is the odd one out? (a) a book (b) a steel plate (c) a wooden board (d) frosted glass
  37. 37.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) turmeric powder (b) a clock to check (c) a straight stick (d) chalk to mark shadows
  38. 38.⚖️ 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) True (b) False
  39. 39.🧺 Do we need a magnet for the shadow clock? (a) needed (b) not needed
  40. 40.True or false: oily paper is transparent. (a) True (b) False

Answer key

  1. a battery cell
  2. we keep it the same
  3. bigger
  4. True
  5. an object blocks light
  6. Earth keeps spinning
  7. False
  8. around noon
  9. clean water
  10. translucent
  11. your hand
  12. a straight stick
  13. opaque
  14. True
  15. we keep it the same
  16. does not work well
  17. yeast
  18. butter paper
  19. not needed
  20. False
  21. a cap or hat
  22. a mirror
  23. False
  24. False
  25. clean water
  26. transparent
  27. frosted glass
  28. the time of day
  29. False
  30. a sunny open place
  31. look straight at the Sun
  32. a book
  33. we change it
  34. chalk to mark shadows
  35. True
  36. frosted glass
  37. turmeric powder
  38. True
  39. not needed
  40. False

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