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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 814 · 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 clock to check (b) a sunny open place (c) chalk to mark shadows (d) turmeric powder
  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 change it (c) we keep it the same
  3. 3.🛟 What should you wear for a long time in the hot sun? (a) nothing on your head (b) a woollen sweater (c) a raincoat (d) a cap or hat
  4. 4.⚖️ 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
  5. 5.🧺 Do we need turmeric powder for the shadow clock? (a) not needed (b) needed
  6. 6.🧺 Do we need a mirror for the shadow clock? (a) not needed (b) needed
  7. 7.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a clock to check (c) a straight stick (d) turmeric powder
  8. 8.🔦 Is a steel plate opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
  9. 9.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) a clock to check (c) chalk to mark shadows (d) a battery cell
  10. 10.True or false: your hand is opaque. (a) False (b) True
  11. 11.True or false: chalk to mark shadows is not needed for the shadow clock. (a) True (b) False
  12. 12.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) smaller (b) brighter (c) coloured (d) bigger
  13. 13.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a balloon (c) a sunny open place (d) a straight stick
  14. 14.True or false: a wooden board is transparent. (a) False (b) True
  15. 15.⚖️ 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
  16. 16.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) long (b) missing (c) short (d) round
  17. 17.🔦 Is oily paper opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
  18. 18.⚖️ 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
  19. 19.True or false: a straight stick is needed for the shadow clock. (a) False (b) True
  20. 20.🔦 Is your hand opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
  21. 21.🛟 While watching shadows outdoors, what must you never do? (a) wear a cap (b) look straight at the Sun (c) mark with chalk (d) sit in the shade
  22. 22.True or false: a battery cell is not needed for the shadow clock. (a) False (b) True
  23. 23.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a clock to check (c) a balloon (d) a straight stick
  24. 24.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) yeast (c) a clock to check (d) chalk to mark shadows
  25. 25.🔍 Which is the odd one out? (a) clean water (b) a steel plate (c) air (d) clear plastic film
  26. 26.🔍 Which is the odd one out? (a) tissue paper (b) clean water (c) clear plastic film (d) clear glass
  27. 27.True or false: a sunny open place is needed for the shadow clock. (a) False (b) True
  28. 28.🔍 Which is the odd one out? (a) frosted glass (b) tissue paper (c) a book (d) butter paper
  29. 29.⚖️ 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) True (b) False
  30. 30.🔦 Is tissue paper opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
  31. 31.True or false: a wooden board is translucent. (a) False (b) True
  32. 32.🔦 Which of these is opaque? (a) air (b) butter paper (c) your hand (d) clear plastic film
  33. 33.🔍 Which is the odd one out? (a) air (b) oily paper (c) clean water (d) clear glass
  34. 34.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is the one thing we change. (a) True (b) False
  35. 35.True or false: a clock to check is not needed for the shadow clock. (a) False (b) True
  36. 36.⚖️ 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) False (b) True
  37. 37.True or false: a wooden board is opaque. (a) False (b) True
  38. 38.True or false: a mirror is not needed for the shadow clock. (a) True (b) False
  39. 39.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the stick kept upright is what we measure. (a) False (b) True
  40. 40.🧺 Do we need a straight stick for the shadow clock? (a) not needed (b) needed

Answer key

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

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