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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 21 · 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.🔦 Is a steel plate opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
  3. 3.🔍 Which is the odd one out? (a) a wooden board (b) a steel plate (c) a book (d) butter paper
  4. 4.🧺 Do we need a mirror for the shadow clock? (a) not needed (b) needed
  5. 5.🔦 Is tissue paper opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
  6. 6.⚖️ 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
  7. 7.🧺 Do we need chalk to mark shadows for the shadow clock? (a) not needed (b) needed
  8. 8.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) brighter (b) bigger (c) coloured (d) smaller
  9. 9.True or false: a balloon is needed for the shadow clock. (a) False (b) True
  10. 10.⚖️ 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
  11. 11.🧺 Which of these is not needed for the shadow clock? (a) a clock to check (b) chalk to mark shadows (c) a sunny open place (d) a balloon
  12. 12.True or false: clear plastic film is transparent. (a) False (b) True
  13. 13.🌞 When is a stick’s shadow the shortest? (a) at night (b) late evening (c) early morning (d) around noon
  14. 14.🧺 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 sunny open place
  15. 15.🔦 Is frosted glass opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
  16. 16.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is kept the same. (a) True (b) False
  17. 17.🛟 What should you wear for a long time in the hot sun? (a) a cap or hat (b) a woollen sweater (c) nothing on your head (d) a raincoat
  18. 18.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) chalk to mark shadows (c) a straight stick (d) a magnet
  19. 19.🔍 Which is the odd one out? (a) tissue paper (b) clear glass (c) clean water (d) clear plastic film
  20. 20.🧺 Which of these is not needed for the shadow clock? (a) turmeric powder (b) a straight stick (c) a clock to check (d) a sunny open place
  21. 21.⚖️ 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 change it (c) we measure it
  22. 22.True or false: a straight stick is not needed for the shadow clock. (a) False (b) True
  23. 23.True or false: clear glass is opaque. (a) True (b) False
  24. 24.🔍 Which is the odd one out? (a) air (b) your hand (c) clear plastic film (d) clean water
  25. 25.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is what we measure. (a) True (b) False
  26. 26.🔍 Which is the odd one out? (a) air (b) clean water (c) oily paper (d) clear plastic film
  27. 27.True or false: frosted glass is translucent. (a) False (b) True
  28. 28.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) a mirror (c) chalk to mark shadows (d) a straight stick
  29. 29.🔍 Which is the odd one out? (a) a book (b) clean water (c) a steel plate (d) your hand
  30. 30.True or false: a battery cell is needed for the shadow clock. (a) False (b) True
  31. 31.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) long (b) round (c) short (d) missing
  32. 32.🔍 Which is the odd one out? (a) a brick (b) clear plastic film (c) a wooden board (d) your hand
  33. 33.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) chalk to mark shadows (c) a clock to check (d) a balloon
  34. 34.True or false: tissue paper is translucent. (a) True (b) False
  35. 35.🧺 Do we need a balloon for the shadow clock? (a) not needed (b) needed
  36. 36.True or false: your hand is opaque. (a) True (b) False
  37. 37.🧺 Do we need a battery cell for the shadow clock? (a) needed (b) not needed
  38. 38.True or false: a mirror is not needed for the shadow clock. (a) False (b) True
  39. 39.🔦 Is clean water opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
  40. 40.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is kept the same. (a) False (b) True

Answer key

  1. look straight at the Sun
  2. opaque
  3. butter paper
  4. not needed
  5. translucent
  6. we keep it the same
  7. needed
  8. bigger
  9. False
  10. True
  11. a balloon
  12. True
  13. around noon
  14. yeast
  15. translucent
  16. False
  17. a cap or hat
  18. a magnet
  19. tissue paper
  20. turmeric powder
  21. we change it
  22. False
  23. False
  24. your hand
  25. True
  26. oily paper
  27. True
  28. a mirror
  29. clean water
  30. False
  31. long
  32. clear plastic film
  33. a balloon
  34. True
  35. not needed
  36. True
  37. not needed
  38. True
  39. transparent
  40. True

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