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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 320 · 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.🧺 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 balloon (d) chalk to mark shadows
  2. 2.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) round (b) long (c) short (d) missing
  3. 3.🧺 Do we need turmeric powder for the shadow clock? (a) needed (b) not needed
  4. 4.🔮 Predict: on a fully cloudy day, the sundial ___. (a) works better (b) does not work well (c) shows two times (d) runs faster
  5. 5.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) the stick kept upright (b) the time of day (c) shadow length (d) the same spot
  6. 6.🔦 Is a wooden board opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
  7. 7.True or false: a magnet is not needed for the shadow clock. (a) False (b) True
  8. 8.🧺 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) a battery cell (d) a straight stick
  9. 9.True or false: a wooden board is transparent. (a) True (b) False
  10. 10.🔦 Is air opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
  11. 11.🛟 What should you wear for a long time in the hot sun? (a) a cap or hat (b) a raincoat (c) a woollen sweater (d) nothing on your head
  12. 12.🧺 Do we need a straight stick for the shadow clock? (a) needed (b) not needed
  13. 13.True or false: a brick is transparent. (a) True (b) False
  14. 14.🧺 Do we need chalk to mark shadows for the shadow clock? (a) not needed (b) needed
  15. 15.⚖️ 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 change it (c) we measure it
  16. 16.True or false: yeast is not needed for the shadow clock. (a) False (b) True
  17. 17.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) bigger (b) brighter (c) smaller (d) coloured
  18. 18.🛟 While watching shadows outdoors, what must you never do? (a) look straight at the Sun (b) wear a cap (c) mark with chalk (d) sit in the shade
  19. 19.True or false: tissue paper is translucent. (a) True (b) False
  20. 20.🔍 Which is the odd one out? (a) your hand (b) frosted glass (c) a book (d) a brick
  21. 21.🧺 Do we need a sunny open place for the shadow clock? (a) needed (b) not needed
  22. 22.True or false: tissue paper is opaque. (a) True (b) False
  23. 23.True or false: a battery cell is needed for the shadow clock. (a) True (b) False
  24. 24.True or false: air is transparent. (a) False (b) True
  25. 25.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) chalk to mark shadows (c) a magnet (d) a sunny open place
  26. 26.True or false: a mirror is not needed for the shadow clock. (a) True (b) False
  27. 27.True or false: clean water is transparent. (a) True (b) False
  28. 28.🔦 Is clean water opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
  29. 29.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) west (b) north (c) east (d) up
  30. 30.🧺 Do we need a clock to check for the shadow clock? (a) needed (b) not needed
  31. 31.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is what we measure. (a) False (b) True
  32. 32.🧺 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) turmeric powder (d) a straight stick
  33. 33.⚖️ 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
  34. 34.🔦 Is clear glass opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
  35. 35.🧺 Do we need a mirror for the shadow clock? (a) not needed (b) needed
  36. 36.🧺 Which of these is not needed for the shadow clock? (a) a battery cell (b) chalk to mark shadows (c) a straight stick (d) a clock to check
  37. 37.⚖️ 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
  38. 38.⚖️ 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
  39. 39.🧺 Which of these is needed for the shadow clock? (a) a magnet (b) a balloon (c) a sunny open place (d) turmeric powder
  40. 40.True or false: a straight stick is not needed for the shadow clock. (a) True (b) False

Answer key

  1. a balloon
  2. long
  3. not needed
  4. does not work well
  5. shadow length
  6. opaque
  7. True
  8. a battery cell
  9. False
  10. transparent
  11. a cap or hat
  12. needed
  13. False
  14. needed
  15. we keep it the same
  16. True
  17. bigger
  18. look straight at the Sun
  19. True
  20. frosted glass
  21. needed
  22. False
  23. False
  24. True
  25. a magnet
  26. True
  27. True
  28. transparent
  29. west
  30. needed
  31. True
  32. turmeric powder
  33. True
  34. transparent
  35. not needed
  36. a battery cell
  37. the same stick
  38. False
  39. a sunny open place
  40. False

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