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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 433 · 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.🔦 Is air opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
  2. 2.🧺 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) turmeric powder
  3. 3.🧺 Do we need a battery cell for the shadow clock? (a) needed (b) not needed
  4. 4.True or false: a book is translucent. (a) True (b) False
  5. 5.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a straight stick (c) a clock to check (d) turmeric powder
  6. 6.🛟 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
  7. 7.True or false: chalk to mark shadows is not needed for the shadow clock. (a) False (b) True
  8. 8.True or false: clear plastic film is opaque. (a) False (b) True
  9. 9.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) brighter (b) bigger (c) coloured (d) smaller
  10. 10.⚖️ 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) True (b) False
  11. 11.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) yeast (c) chalk to mark shadows (d) a sunny open place
  12. 12.⚖️ 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
  13. 13.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) missing (b) short (c) long (d) round
  14. 14.🔍 Which is the odd one out? (a) tissue paper (b) frosted glass (c) oily paper (d) clear glass
  15. 15.🧺 Which of these is needed for the shadow clock? (a) yeast (b) a mirror (c) a magnet (d) chalk to mark shadows
  16. 16.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) chalk to mark shadows (c) a straight stick (d) yeast
  17. 17.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) shadow length (b) the same spot (c) the same stick (d) the time of day
  18. 18.⚖️ 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
  19. 19.True or false: yeast is needed for the shadow clock. (a) True (b) False
  20. 20.True or false: clear plastic film is transparent. (a) False (b) True
  21. 21.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a magnet (c) a sunny open place (d) a clock to check
  22. 22.🛟 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
  23. 23.🔦 Which of these is opaque? (a) a steel plate (b) oily paper (c) clear plastic film (d) frosted glass
  24. 24.🔍 Which is the odd one out? (a) a brick (b) a book (c) butter paper (d) your hand
  25. 25.⚖️ 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) True (b) False
  26. 26.🧺 Do we need yeast for the shadow clock? (a) not needed (b) needed
  27. 27.True or false: turmeric powder is needed for the shadow clock. (a) True (b) False
  28. 28.True or false: a steel plate is opaque. (a) True (b) False
  29. 29.True or false: clean water is transparent. (a) True (b) False
  30. 30.🔦 Which of these is transparent? (a) a wooden board (b) a steel plate (c) clean water (d) tissue paper
  31. 31.🔦 Is oily paper opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
  32. 32.🧺 Do we need a clock to check for the shadow clock? (a) not needed (b) needed
  33. 33.🔦 Is a book opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
  34. 34.⚖️ 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
  35. 35.True or false: a brick is translucent. (a) True (b) False
  36. 36.🔦 Is tissue paper opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
  37. 37.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same stick”? (a) we change it (b) we keep it the same (c) we measure it
  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 keep it the same (c) we change it
  39. 39.🔦 Is a steel plate opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
  40. 40.🧺 Do we need a magnet for the shadow clock? (a) not needed (b) needed

Answer key

  1. transparent
  2. turmeric powder
  3. not needed
  4. False
  5. turmeric powder
  6. look straight at the Sun
  7. False
  8. False
  9. bigger
  10. True
  11. yeast
  12. False
  13. long
  14. clear glass
  15. chalk to mark shadows
  16. yeast
  17. the time of day
  18. we keep it the same
  19. False
  20. True
  21. a magnet
  22. a cap or hat
  23. a steel plate
  24. butter paper
  25. False
  26. not needed
  27. False
  28. True
  29. True
  30. clean water
  31. translucent
  32. needed
  33. opaque
  34. True
  35. False
  36. translucent
  37. we keep it the same
  38. we keep it the same
  39. opaque
  40. not needed

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