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Shadow and Sundial Experiment Worksheet

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

Answer key

  1. not needed
  2. we change it
  3. False
  4. opaque
  5. False
  6. a balloon
  7. False
  8. look straight at the Sun
  9. tissue paper
  10. True
  11. tissue paper
  12. False
  13. turmeric powder
  14. Earth keeps spinning
  15. we keep it the same
  16. a cap or hat
  17. bigger
  18. False
  19. True
  20. True
  21. a battery cell
  22. False
  23. a mirror
  24. False
  25. transparent
  26. we measure it
  27. chalk to mark shadows
  28. opaque
  29. butter paper
  30. the time of day
  31. False
  32. transparent
  33. translucent
  34. a magnet
  35. clear glass
  36. opaque
  37. a mirror
  38. we keep it the same
  39. not needed
  40. long

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