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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 170 · 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.🧺 Do we need yeast for the shadow clock? (a) needed (b) not needed
  2. 2.🔍 Which is the odd one out? (a) a book (b) a wooden board (c) a brick (d) air
  3. 3.🔦 Is a book opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
  4. 4.🛟 What should you wear for a long time in the hot sun? (a) nothing on your head (b) a woollen sweater (c) a cap or hat (d) a raincoat
  5. 5.🔍 Which is the odd one out? (a) butter paper (b) oily paper (c) frosted glass (d) clear plastic film
  6. 6.True or false: a clock to check is needed for the shadow clock. (a) False (b) True
  7. 7.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is the one thing we change. (a) True (b) False
  8. 8.🧺 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 balloon (d) a clock to check
  9. 9.🔮 Predict: on a fully cloudy day, the sundial ___. (a) works better (b) runs faster (c) shows two times (d) does not work well
  10. 10.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the time of day”? (a) we keep it the same (b) we measure it (c) we change it
  11. 11.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same spot”? (a) we measure it (b) we keep it the same (c) we change it
  12. 12.True or false: your hand is translucent. (a) False (b) True
  13. 13.⚖️ 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
  14. 14.🛟 While watching shadows outdoors, what must you never do? (a) sit in the shade (b) mark with chalk (c) wear a cap (d) look straight at the Sun
  15. 15.🔍 Which is the odd one out? (a) frosted glass (b) a book (c) a wooden board (d) a steel plate
  16. 16.🧺 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 mirror
  17. 17.🔦 Which of these is translucent? (a) a wooden board (b) a steel plate (c) a book (d) oily paper
  18. 18.⚖️ 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
  19. 19.True or false: clean water is translucent. (a) True (b) False
  20. 20.🧺 Do we need a sunny open place for the shadow clock? (a) needed (b) not needed
  21. 21.🧺 Do we need a mirror for the shadow clock? (a) not needed (b) needed
  22. 22.True or false: air is opaque. (a) False (b) True
  23. 23.🧺 Which of these is needed for the shadow clock? (a) a magnet (b) a sunny open place (c) yeast (d) a battery cell
  24. 24.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a straight stick (c) a sunny open place (d) a battery cell
  25. 25.True or false: yeast is not needed for the shadow clock. (a) False (b) True
  26. 26.True or false: a battery cell is needed for the shadow clock. (a) True (b) False
  27. 27.True or false: your hand is opaque. (a) True (b) False
  28. 28.🌍 Why does the stick’s shadow move during the day? (a) the stick grows (b) Earth keeps spinning (c) the stick walks (d) the ground slides
  29. 29.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) a clock to check (c) a magnet (d) chalk to mark shadows
  30. 30.🧺 Do we need a battery cell for the shadow clock? (a) needed (b) not needed
  31. 31.⚖️ 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
  32. 32.True or false: a brick is opaque. (a) True (b) False
  33. 33.🧺 Which of these is needed for the shadow clock? (a) a balloon (b) turmeric powder (c) chalk to mark shadows (d) yeast
  34. 34.🔍 Which is the odd one out? (a) air (b) clean water (c) clear plastic film (d) a brick
  35. 35.🌞 When is a stick’s shadow the shortest? (a) around noon (b) at night (c) late evening (d) early morning
  36. 36.🧺 Which of these is needed for the shadow clock? (a) yeast (b) a straight stick (c) a balloon (d) a magnet
  37. 37.⚖️ 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) shadow length (c) the same stick (d) the time of day
  38. 38.🔦 Which of these is transparent? (a) butter paper (b) a steel plate (c) clear plastic film (d) a brick
  39. 39.🔦 Which of these is transparent? (a) a book (b) a wooden board (c) frosted glass (d) air
  40. 40.🔦 Which of these is opaque? (a) your hand (b) butter paper (c) clean water (d) oily paper

Answer key

  1. not needed
  2. air
  3. opaque
  4. a cap or hat
  5. clear plastic film
  6. True
  7. False
  8. a balloon
  9. does not work well
  10. we change it
  11. we keep it the same
  12. False
  13. True
  14. look straight at the Sun
  15. frosted glass
  16. a mirror
  17. oily paper
  18. True
  19. False
  20. needed
  21. not needed
  22. False
  23. a sunny open place
  24. a battery cell
  25. True
  26. False
  27. True
  28. Earth keeps spinning
  29. a magnet
  30. not needed
  31. we keep it the same
  32. True
  33. chalk to mark shadows
  34. a brick
  35. around noon
  36. a straight stick
  37. the time of day
  38. clear plastic film
  39. air
  40. your hand

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