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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 200 · 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.🧺 Which of these is not needed for the shadow clock? (a) a clock to check (b) a sunny open place (c) chalk to mark shadows (d) turmeric powder
  2. 2.🌍 Why does the stick’s shadow move during the day? (a) the ground slides (b) Earth keeps spinning (c) the stick grows (d) the stick walks
  3. 3.🧺 Which of these is not needed for the shadow clock? (a) yeast (b) a clock to check (c) a sunny open place (d) a straight stick
  4. 4.🔮 Predict: on a fully cloudy day, the sundial ___. (a) runs faster (b) works better (c) shows two times (d) does not work well
  5. 5.⚖️ 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
  6. 6.🔦 Is a wooden board opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
  7. 7.🔦 Is clear plastic film opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
  8. 8.True or false: a straight stick is needed for the shadow clock. (a) False (b) True
  9. 9.🧺 Do we need a magnet for the shadow clock? (a) not needed (b) needed
  10. 10.True or false: butter paper is translucent. (a) False (b) True
  11. 11.True or false: a book is transparent. (a) True (b) False
  12. 12.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a balloon (c) a sunny open place (d) chalk to mark shadows
  13. 13.🔍 Which is the odd one out? (a) frosted glass (b) clean water (c) clear glass (d) clear plastic film
  14. 14.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) smaller (b) coloured (c) bigger (d) brighter
  15. 15.True or false: a wooden board is opaque. (a) False (b) True
  16. 16.🔦 Which of these is transparent? (a) a steel plate (b) a wooden board (c) oily paper (d) clear glass
  17. 17.True or false: a mirror is not needed for the shadow clock. (a) True (b) False
  18. 18.⚖️ 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
  19. 19.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) turmeric powder (c) a straight stick (d) a clock to check
  20. 20.🔦 Which of these is transparent? (a) a wooden board (b) clear plastic film (c) a book (d) your hand
  21. 21.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a clock to check (c) a straight stick (d) yeast
  22. 22.🛟 What should you wear for a long time in the hot sun? (a) a raincoat (b) a cap or hat (c) a woollen sweater (d) nothing on your head
  23. 23.🛟 While watching shadows outdoors, what must you never do? (a) sit in the shade (b) look straight at the Sun (c) wear a cap (d) mark with chalk
  24. 24.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) missing (b) round (c) short (d) long
  25. 25.🔦 Is a steel plate opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
  26. 26.🧺 Do we need a balloon for the shadow clock? (a) not needed (b) needed
  27. 27.🔍 Which is the odd one out? (a) a wooden board (b) a steel plate (c) a brick (d) tissue paper
  28. 28.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same spot”? (a) we change it (b) we measure it (c) we keep it the same
  29. 29.True or false: a brick is translucent. (a) False (b) True
  30. 30.🧺 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 mirror (d) a straight stick
  31. 31.🔦 Which of these is translucent? (a) a steel plate (b) clean water (c) butter paper (d) clear glass
  32. 32.🔦 Which of these is translucent? (a) a book (b) your hand (c) air (d) frosted glass
  33. 33.📘 Why does a shadow form? (a) light bends round it (b) the ground is dark (c) the object is cold (d) an object blocks light
  34. 34.True or false: yeast is needed for the shadow clock. (a) True (b) False
  35. 35.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) the time of day (b) the stick kept upright (c) the same stick (d) shadow length
  36. 36.🔦 Which of these is translucent? (a) a brick (b) your hand (c) air (d) oily paper
  37. 37.🔦 Which of these is opaque? (a) air (b) clean water (c) a steel plate (d) butter paper
  38. 38.🧺 Which of these is needed for the shadow clock? (a) a straight stick (b) turmeric powder (c) yeast (d) a battery cell
  39. 39.True or false: yeast is not needed for the shadow clock. (a) False (b) True
  40. 40.True or false: turmeric powder is needed for the shadow clock. (a) True (b) False

Answer key

  1. turmeric powder
  2. Earth keeps spinning
  3. yeast
  4. does not work well
  5. we keep it the same
  6. opaque
  7. transparent
  8. True
  9. not needed
  10. True
  11. False
  12. a balloon
  13. frosted glass
  14. bigger
  15. True
  16. clear glass
  17. True
  18. we change it
  19. turmeric powder
  20. clear plastic film
  21. yeast
  22. a cap or hat
  23. look straight at the Sun
  24. long
  25. opaque
  26. not needed
  27. tissue paper
  28. we keep it the same
  29. False
  30. a mirror
  31. butter paper
  32. frosted glass
  33. an object blocks light
  34. False
  35. shadow length
  36. oily paper
  37. a steel plate
  38. a straight stick
  39. True
  40. False

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