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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 596 · 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.🔦 Is air opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
  2. 2.🧺 Do we need a battery cell for the shadow clock? (a) not needed (b) needed
  3. 3.🧺 Which of these is needed for the shadow clock? (a) a magnet (b) a sunny open place (c) a mirror (d) yeast
  4. 4.True or false: turmeric powder is needed for the shadow clock. (a) False (b) True
  5. 5.⚖️ 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
  6. 6.🔍 Which is the odd one out? (a) frosted glass (b) clean water (c) oily paper (d) tissue paper
  7. 7.🔍 Which is the odd one out? (a) a book (b) clear plastic film (c) a steel plate (d) your hand
  8. 8.🌍 Why does the stick’s shadow move during the day? (a) Earth keeps spinning (b) the ground slides (c) the stick grows (d) the stick walks
  9. 9.🔦 Is butter paper opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
  10. 10.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) long (b) short (c) round (d) missing
  11. 11.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) shadow length (b) the same stick (c) the stick kept upright (d) the time of day
  12. 12.🔦 Is a brick opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
  13. 13.🔦 Is your hand opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
  14. 14.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a magnet (c) a sunny open place (d) a straight stick
  15. 15.True or false: frosted glass is opaque. (a) False (b) True
  16. 16.True or false: a clock to check is not needed for the shadow clock. (a) False (b) True
  17. 17.🔦 Which of these is opaque? (a) a steel plate (b) oily paper (c) butter paper (d) tissue paper
  18. 18.🛟 While watching shadows outdoors, what must you never do? (a) wear a cap (b) sit in the shade (c) look straight at the Sun (d) mark with chalk
  19. 19.True or false: chalk to mark shadows is not needed for the shadow clock. (a) False (b) True
  20. 20.📘 Why does a shadow form? (a) light bends round it (b) an object blocks light (c) the ground is dark (d) the object is cold
  21. 21.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is the one thing we change. (a) False (b) True
  22. 22.True or false: a wooden board is transparent. (a) False (b) True
  23. 23.🔦 Which of these is transparent? (a) frosted glass (b) a wooden board (c) oily paper (d) air
  24. 24.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the time of day is kept the same. (a) True (b) False
  25. 25.🔦 Is frosted glass opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
  26. 26.🛟 What should you wear for a long time in the hot sun? (a) a woollen sweater (b) a raincoat (c) nothing on your head (d) a cap or hat
  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) shadow length (c) the same spot
  28. 28.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) brighter (b) smaller (c) coloured (d) bigger
  29. 29.🧺 Do we need a balloon for the shadow clock? (a) needed (b) not needed
  30. 30.⚖️ 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
  31. 31.True or false: air is transparent. (a) True (b) False
  32. 32.🧺 Which of these is needed for the shadow clock? (a) a mirror (b) turmeric powder (c) a clock to check (d) yeast
  33. 33.🔦 Which of these is opaque? (a) tissue paper (b) clear glass (c) air (d) a brick
  34. 34.🧺 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
  35. 35.🧺 Do we need a straight stick for the shadow clock? (a) not needed (b) needed
  36. 36.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the time of day”? (a) we change it (b) we measure it (c) we keep it the same
  37. 37.🧺 Which of these is needed for the shadow clock? (a) yeast (b) a mirror (c) a straight stick (d) a battery cell
  38. 38.True or false: tissue paper is transparent. (a) False (b) True
  39. 39.🧺 Which of these is needed for the shadow clock? (a) a balloon (b) chalk to mark shadows (c) a battery cell (d) a magnet
  40. 40.⚖️ 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

Answer key

  1. transparent
  2. not needed
  3. a sunny open place
  4. False
  5. False
  6. clean water
  7. clear plastic film
  8. Earth keeps spinning
  9. translucent
  10. long
  11. shadow length
  12. opaque
  13. opaque
  14. a magnet
  15. False
  16. False
  17. a steel plate
  18. look straight at the Sun
  19. False
  20. an object blocks light
  21. False
  22. False
  23. air
  24. False
  25. translucent
  26. a cap or hat
  27. the same spot
  28. bigger
  29. not needed
  30. we keep it the same
  31. True
  32. a clock to check
  33. a brick
  34. yeast
  35. needed
  36. we change it
  37. a straight stick
  38. False
  39. chalk to mark shadows
  40. we keep it the same

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