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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 340 · 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.True or false: yeast is needed for the shadow clock. (a) True (b) False
  2. 2.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the time of day is the one thing we change. (a) False (b) True
  3. 3.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a balloon (b) chalk to mark shadows (c) a straight stick (d) a sunny open place
  4. 4.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the time of day is what we measure. (a) True (b) False
  5. 5.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) a mirror (c) a sunny open place (d) a clock to check
  6. 6.True or false: oily paper is translucent. (a) True (b) False
  7. 7.⚖️ 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
  8. 8.🧺 Do we need a straight stick for the shadow clock? (a) needed (b) not needed
  9. 9.🔍 Which is the odd one out? (a) oily paper (b) clean water (c) clear glass (d) clear plastic film
  10. 10.True or false: a brick is opaque. (a) False (b) True
  11. 11.🧺 Do we need chalk to mark shadows for the shadow clock? (a) not needed (b) needed
  12. 12.True or false: tissue paper is translucent. (a) True (b) False
  13. 13.🧺 Do we need turmeric powder for the shadow clock? (a) not needed (b) needed
  14. 14.🔦 Is air opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
  15. 15.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is the one thing we change. (a) False (b) True
  16. 16.🌍 Why does the stick’s shadow move during the day? (a) the ground slides (b) the stick walks (c) the stick grows (d) Earth keeps spinning
  17. 17.🧺 Do we need a magnet for the shadow clock? (a) needed (b) not needed
  18. 18.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) bigger (b) smaller (c) brighter (d) coloured
  19. 19.🧺 Do we need a mirror for the shadow clock? (a) not needed (b) needed
  20. 20.🛟 What should you wear for a long time in the hot sun? (a) a cap or hat (b) a raincoat (c) nothing on your head (d) a woollen sweater
  21. 21.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is what we measure. (a) True (b) False
  22. 22.📘 Why does a shadow form? (a) light bends round it (b) the object is cold (c) an object blocks light (d) the ground is dark
  23. 23.🌞 When is a stick’s shadow the shortest? (a) early morning (b) late evening (c) around noon (d) at night
  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.🔦 Which of these is translucent? (a) clear glass (b) tissue paper (c) a steel plate (d) clear plastic film
  26. 26.🛟 While watching shadows outdoors, what must you never do? (a) sit in the shade (b) wear a cap (c) look straight at the Sun (d) mark with chalk
  27. 27.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) the time of day (b) the same stick (c) shadow length
  28. 28.⚖️ 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
  29. 29.True or false: a balloon is not needed for the shadow clock. (a) True (b) False
  30. 30.🔍 Which is the odd one out? (a) your hand (b) a brick (c) clean water (d) a steel plate
  31. 31.⚖️ 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 change it (c) we keep it the same
  32. 32.🧺 Do we need a battery cell for the shadow clock? (a) not needed (b) needed
  33. 33.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a sunny open place (c) turmeric powder (d) a straight stick
  34. 34.🧺 Do we need a balloon for the shadow clock? (a) needed (b) not needed
  35. 35.🧺 Which of these is needed for the shadow clock? (a) chalk to mark shadows (b) yeast (c) turmeric powder (d) a mirror
  36. 36.🔍 Which is the odd one out? (a) frosted glass (b) oily paper (c) your hand (d) tissue paper
  37. 37.True or false: a balloon is needed for the shadow clock. (a) True (b) False
  38. 38.🔍 Which is the odd one out? (a) frosted glass (b) oily paper (c) tissue paper (d) a steel plate
  39. 39.🧺 Which of these is needed for the shadow clock? (a) a sunny open place (b) yeast (c) turmeric powder (d) a mirror
  40. 40.⚖️ 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 time of day (d) the same stick

Answer key

  1. False
  2. True
  3. a balloon
  4. False
  5. a mirror
  6. True
  7. True
  8. needed
  9. oily paper
  10. True
  11. needed
  12. True
  13. not needed
  14. transparent
  15. False
  16. Earth keeps spinning
  17. not needed
  18. bigger
  19. not needed
  20. a cap or hat
  21. False
  22. an object blocks light
  23. around noon
  24. False
  25. tissue paper
  26. look straight at the Sun
  27. the same stick
  28. we change it
  29. True
  30. clean water
  31. we keep it the same
  32. not needed
  33. turmeric powder
  34. not needed
  35. chalk to mark shadows
  36. your hand
  37. False
  38. a steel plate
  39. a sunny open place
  40. the time of day

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