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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 229 · 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.🔍 Which is the odd one out? (a) butter paper (b) a wooden board (c) a steel plate (d) a brick
  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.🧺 Which of these is needed for the shadow clock? (a) a mirror (b) a magnet (c) a battery cell (d) a straight stick
  4. 4.🛟 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
  5. 5.True or false: a battery cell is needed for the shadow clock. (a) True (b) False
  6. 6.🧺 Which of these is not needed for the shadow clock? (a) a clock to check (b) chalk to mark shadows (c) a sunny open place (d) yeast
  7. 7.True or false: yeast is not needed for the shadow clock. (a) False (b) True
  8. 8.🔦 Which of these is opaque? (a) clear plastic film (b) clean water (c) a wooden board (d) oily paper
  9. 9.🧺 Do we need a mirror for the shadow clock? (a) not needed (b) needed
  10. 10.🕰️ What is a sundial used for? (a) making rainbows (b) measuring rain (c) weighing things (d) telling the time
  11. 11.True or false: clean water is opaque. (a) True (b) False
  12. 12.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) missing (b) round (c) long (d) short
  13. 13.🔦 Which of these is transparent? (a) your hand (b) a wooden board (c) a brick (d) clean water
  14. 14.🧺 Do we need chalk to mark shadows for the shadow clock? (a) needed (b) not needed
  15. 15.True or false: chalk to mark shadows is not needed for the shadow clock. (a) True (b) False
  16. 16.⚖️ 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 measure it (c) we keep it the same
  17. 17.⚖️ 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) False (b) True
  18. 18.⚖️ 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) the same stick (c) the same spot (d) shadow length
  19. 19.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same spot”? (a) we change it (b) we measure it (c) we keep it the same
  20. 20.🔦 Is clear plastic film opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
  21. 21.🔦 Which of these is translucent? (a) air (b) your hand (c) clean water (d) tissue paper
  22. 22.🔮 Predict: on a fully cloudy day, the sundial ___. (a) does not work well (b) works better (c) runs faster (d) shows two times
  23. 23.🔦 Is a book opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
  24. 24.⚖️ 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
  25. 25.⚖️ 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
  26. 26.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) bigger (b) brighter (c) smaller (d) coloured
  27. 27.True or false: oily paper is translucent. (a) True (b) False
  28. 28.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) a magnet (c) a sunny open place (d) a straight stick
  29. 29.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) chalk to mark shadows (c) a sunny open place (d) a magnet
  30. 30.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a battery cell (b) a sunny open place (c) a clock to check (d) chalk to mark shadows
  31. 31.🧺 Which of these is needed for the shadow clock? (a) a clock to check (b) a magnet (c) a mirror (d) yeast
  32. 32.True or false: turmeric powder is needed for the shadow clock. (a) True (b) False
  33. 33.True or false: air is translucent. (a) True (b) False
  34. 34.True or false: tissue paper is translucent. (a) True (b) False
  35. 35.🔍 Which is the odd one out? (a) tissue paper (b) clear glass (c) clean water (d) air
  36. 36.🌍 Why does the stick’s shadow move during the day? (a) the stick walks (b) Earth keeps spinning (c) the stick grows (d) the ground slides
  37. 37.🧺 Do we need a clock to check for the shadow clock? (a) needed (b) not needed
  38. 38.🛟 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
  39. 39.🔦 Which of these is translucent? (a) clear plastic film (b) clear glass (c) a brick (d) oily paper
  40. 40.🔦 Is frosted glass opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent

Answer key

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

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