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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 424 · 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? What do we do with “the time of day”? (a) we keep it the same (b) we measure it (c) we change it
  2. 2.True or false: chalk to mark shadows is needed for the shadow clock. (a) True (b) False
  3. 3.🛟 What should you wear for a long time in the hot sun? (a) nothing on your head (b) a cap or hat (c) a woollen sweater (d) a raincoat
  4. 4.True or false: a mirror is needed for the shadow clock. (a) True (b) False
  5. 5.🧺 Do we need turmeric powder for the shadow clock? (a) not needed (b) needed
  6. 6.🔦 Is clean water opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
  7. 7.True or false: a straight stick is not needed for the shadow clock. (a) False (b) True
  8. 8.🧺 Do we need a battery cell for the shadow clock? (a) needed (b) not needed
  9. 9.🧺 Which of these is needed for the shadow clock? (a) a magnet (b) a battery cell (c) yeast (d) a clock to check
  10. 10.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) the same spot (b) shadow length (c) the time of day (d) the same stick
  11. 11.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a balloon (c) chalk to mark shadows (d) a clock to check
  12. 12.🔦 Which of these is translucent? (a) a brick (b) butter paper (c) a wooden board (d) your hand
  13. 13.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) east (b) north (c) west (d) up
  14. 14.🧺 Which of these is needed for the shadow clock? (a) a balloon (b) a magnet (c) turmeric powder (d) a straight stick
  15. 15.🔦 Which of these is opaque? (a) your hand (b) butter paper (c) tissue paper (d) oily paper
  16. 16.🛟 While watching shadows outdoors, what must you never do? (a) sit in the shade (b) look straight at the Sun (c) wear a cap (d) mark with chalk
  17. 17.🧺 Which of these is needed for the shadow clock? (a) a battery cell (b) chalk to mark shadows (c) a balloon (d) a magnet
  18. 18.🔍 Which is the odd one out? (a) a brick (b) a steel plate (c) a book (d) butter paper
  19. 19.🔍 Which is the odd one out? (a) oily paper (b) clear plastic film (c) clean water (d) clear glass
  20. 20.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the stick kept upright”? (a) we change it (b) we keep it the same (c) we measure it
  21. 21.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) shadow length (b) the same stick (c) the time of day
  22. 22.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a mirror (c) a sunny open place (d) a straight stick
  23. 23.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a sunny open place (c) a balloon (d) a clock to check
  24. 24.🕰️ What is a sundial used for? (a) telling the time (b) measuring rain (c) weighing things (d) making rainbows
  25. 25.🧺 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) chalk to mark shadows (d) a magnet
  26. 26.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) long (b) round (c) short (d) missing
  27. 27.True or false: a sunny open place is not needed for the shadow clock. (a) True (b) False
  28. 28.🔮 Predict: on a fully cloudy day, the sundial ___. (a) does not work well (b) shows two times (c) runs faster (d) works better
  29. 29.🧺 Which of these is not needed for the shadow clock? (a) a clock to check (b) chalk to mark shadows (c) a straight stick (d) yeast
  30. 30.🔦 Which of these is opaque? (a) oily paper (b) butter paper (c) a steel plate (d) clear glass
  31. 31.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is what we measure. (a) False (b) True
  32. 32.🧺 Do we need a mirror for the shadow clock? (a) not needed (b) needed
  33. 33.True or false: chalk to mark shadows is not needed for the shadow clock. (a) False (b) True
  34. 34.🔦 Which of these is opaque? (a) clear plastic film (b) a brick (c) air (d) frosted glass
  35. 35.🔍 Which is the odd one out? (a) air (b) butter paper (c) tissue paper (d) frosted glass
  36. 36.True or false: turmeric powder is needed for the shadow clock. (a) False (b) True
  37. 37.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) brighter (b) coloured (c) smaller (d) bigger
  38. 38.True or false: yeast is not needed for the shadow clock. (a) True (b) False
  39. 39.True or false: tissue paper is opaque. (a) True (b) False
  40. 40.📘 Why does a shadow form? (a) the ground is dark (b) light bends round it (c) the object is cold (d) an object blocks light

Answer key

  1. we change it
  2. True
  3. a cap or hat
  4. False
  5. not needed
  6. transparent
  7. False
  8. not needed
  9. a clock to check
  10. shadow length
  11. a balloon
  12. butter paper
  13. west
  14. a straight stick
  15. your hand
  16. look straight at the Sun
  17. chalk to mark shadows
  18. butter paper
  19. oily paper
  20. we keep it the same
  21. the same stick
  22. a mirror
  23. a balloon
  24. telling the time
  25. a magnet
  26. long
  27. False
  28. does not work well
  29. yeast
  30. a steel plate
  31. False
  32. not needed
  33. False
  34. a brick
  35. air
  36. False
  37. bigger
  38. True
  39. False
  40. an object blocks light

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