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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 402 · 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.📘 Why does a shadow form? (a) light bends round it (b) an object blocks light (c) the object is cold (d) the ground is dark
  2. 2.⚖️ 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
  3. 3.🧺 Do we need yeast for the shadow clock? (a) not needed (b) needed
  4. 4.🧺 Do we need a battery cell for the shadow clock? (a) needed (b) not needed
  5. 5.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is kept the same. (a) False (b) True
  6. 6.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) west (b) up (c) north (d) east
  7. 7.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same spot”? (a) we keep it the same (b) we measure it (c) we change it
  8. 8.🛟 While watching shadows outdoors, what must you never do? (a) sit in the shade (b) mark with chalk (c) wear a cap (d) look straight at the Sun
  9. 9.True or false: your hand is opaque. (a) False (b) True
  10. 10.🌞 When is a stick’s shadow the shortest? (a) late evening (b) at night (c) around noon (d) early morning
  11. 11.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) bigger (b) coloured (c) smaller (d) brighter
  12. 12.🔦 Which of these is transparent? (a) a brick (b) butter paper (c) a steel plate (d) clear plastic film
  13. 13.True or false: clear plastic film is translucent. (a) False (b) True
  14. 14.🔍 Which is the odd one out? (a) a wooden board (b) a steel plate (c) a book (d) tissue paper
  15. 15.True or false: air is translucent. (a) True (b) False
  16. 16.🔍 Which is the odd one out? (a) oily paper (b) a book (c) frosted glass (d) butter paper
  17. 17.🧺 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) yeast
  18. 18.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the stick kept upright is the one thing we change. (a) False (b) True
  19. 19.🔦 Is clean water opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
  20. 20.🔍 Which is the odd one out? (a) frosted glass (b) clean water (c) tissue paper (d) oily paper
  21. 21.🧺 Which of these is needed for the shadow clock? (a) turmeric powder (b) a straight stick (c) a balloon (d) a mirror
  22. 22.🧺 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 balloon
  23. 23.🔍 Which is the odd one out? (a) a brick (b) clear glass (c) clean water (d) air
  24. 24.🧺 Do we need turmeric powder for the shadow clock? (a) needed (b) not needed
  25. 25.🔦 Is your hand opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
  26. 26.True or false: tissue paper is transparent. (a) True (b) False
  27. 27.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same stick”? (a) we keep it the same (b) we change it (c) we measure it
  28. 28.🔦 Is a book opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
  29. 29.⚖️ 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
  30. 30.🧺 Do we need a straight stick for the shadow clock? (a) not needed (b) needed
  31. 31.⚖️ 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) True (b) False
  32. 32.🛟 What should you wear for a long time in the hot sun? (a) a woollen sweater (b) nothing on your head (c) a cap or hat (d) a raincoat
  33. 33.🌍 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
  34. 34.True or false: clear glass is transparent. (a) False (b) True
  35. 35.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) turmeric powder (c) a sunny open place (d) a clock to check
  36. 36.🧺 Do we need a mirror for the shadow clock? (a) not needed (b) needed
  37. 37.⚖️ 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
  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 measure it (b) we change it (c) we keep it the same
  39. 39.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a battery cell (c) a clock to check (d) chalk to mark shadows
  40. 40.True or false: a brick is opaque. (a) False (b) True

Answer key

  1. an object blocks light
  2. True
  3. not needed
  4. not needed
  5. True
  6. west
  7. we keep it the same
  8. look straight at the Sun
  9. True
  10. around noon
  11. bigger
  12. clear plastic film
  13. False
  14. tissue paper
  15. False
  16. a book
  17. yeast
  18. False
  19. transparent
  20. clean water
  21. a straight stick
  22. a balloon
  23. a brick
  24. not needed
  25. opaque
  26. False
  27. we keep it the same
  28. opaque
  29. True
  30. needed
  31. False
  32. a cap or hat
  33. Earth keeps spinning
  34. True
  35. turmeric powder
  36. not needed
  37. True
  38. we keep it the same
  39. a battery cell
  40. True

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