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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 283 · 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.⚖️ 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
  2. 2.🧺 Which of these is needed for the shadow clock? (a) yeast (b) a balloon (c) a clock to check (d) a magnet
  3. 3.🧺 Do we need yeast for the shadow clock? (a) needed (b) not needed
  4. 4.⚖️ 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 measure it (c) we change it
  5. 5.⚖️ 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
  6. 6.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) chalk to mark shadows (c) a battery cell (d) a straight stick
  7. 7.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is kept the same. (a) True (b) False
  8. 8.True or false: frosted glass is opaque. (a) True (b) False
  9. 9.True or false: a balloon is not needed for the shadow clock. (a) True (b) False
  10. 10.True or false: turmeric powder is needed for the shadow clock. (a) True (b) False
  11. 11.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) smaller (b) coloured (c) brighter (d) bigger
  12. 12.🔦 Is a brick opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
  13. 13.🧺 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) turmeric powder (d) a straight stick
  14. 14.🧺 Which of these is needed for the shadow clock? (a) a mirror (b) a battery cell (c) a straight stick (d) a magnet
  15. 15.🔦 Which of these is translucent? (a) your hand (b) tissue paper (c) clean water (d) a steel plate
  16. 16.🧺 Do we need a clock to check for the shadow clock? (a) needed (b) not needed
  17. 17.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a magnet (b) a sunny open place (c) chalk to mark shadows (d) a straight stick
  18. 18.True or false: air is opaque. (a) True (b) False
  19. 19.🛟 While watching shadows outdoors, what must you never do? (a) look straight at the Sun (b) sit in the shade (c) wear a cap (d) mark with chalk
  20. 20.🔦 Which of these is opaque? (a) butter paper (b) frosted glass (c) clear glass (d) a wooden board
  21. 21.🛟 What should you wear for a long time in the hot sun? (a) a raincoat (b) a woollen sweater (c) a cap or hat (d) nothing on your head
  22. 22.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “shadow length”? (a) we keep it the same (b) we change it (c) we measure it
  23. 23.🔦 Is butter paper opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
  24. 24.🌞 When is a stick’s shadow the shortest? (a) early morning (b) around noon (c) late evening (d) at night
  25. 25.🧺 Which of these is not needed for the shadow clock? (a) turmeric powder (b) a straight stick (c) a clock to check (d) a sunny open place
  26. 26.True or false: a steel plate is translucent. (a) False (b) True
  27. 27.🔦 Is oily paper opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
  28. 28.True or false: a wooden board is opaque. (a) False (b) True
  29. 29.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) yeast (c) a sunny open place (d) chalk to mark shadows
  30. 30.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) missing (b) round (c) long (d) short
  31. 31.True or false: yeast is not needed for the shadow clock. (a) False (b) True
  32. 32.🌍 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
  33. 33.⚖️ 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 stick kept upright
  34. 34.🔦 Which of these is transparent? (a) a steel plate (b) tissue paper (c) frosted glass (d) air
  35. 35.🧺 Do we need a battery cell for the shadow clock? (a) needed (b) not needed
  36. 36.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) the time of day (b) shadow length (c) the same stick (d) the stick kept upright
  37. 37.🔦 Which of these is translucent? (a) a brick (b) a steel plate (c) clear plastic film (d) oily paper
  38. 38.True or false: air is translucent. (a) False (b) True
  39. 39.🔦 Is clear glass opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
  40. 40.🧺 Do we need a balloon for the shadow clock? (a) not needed (b) needed

Answer key

  1. True
  2. a clock to check
  3. not needed
  4. we keep it the same
  5. we keep it the same
  6. a battery cell
  7. True
  8. False
  9. True
  10. False
  11. bigger
  12. opaque
  13. turmeric powder
  14. a straight stick
  15. tissue paper
  16. needed
  17. a magnet
  18. False
  19. look straight at the Sun
  20. a wooden board
  21. a cap or hat
  22. we measure it
  23. translucent
  24. around noon
  25. turmeric powder
  26. False
  27. translucent
  28. True
  29. yeast
  30. long
  31. True
  32. Earth keeps spinning
  33. the stick kept upright
  34. air
  35. not needed
  36. shadow length
  37. oily paper
  38. False
  39. transparent
  40. not needed

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