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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 223 · 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 of these is needed for the shadow clock? (a) turmeric powder (b) a sunny open place (c) a mirror (d) a balloon
  2. 2.🧺 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
  3. 3.🔍 Which is the odd one out? (a) frosted glass (b) tissue paper (c) butter paper (d) a wooden board
  4. 4.True or false: a steel plate is translucent. (a) False (b) True
  5. 5.🧺 Which of these is needed for the shadow clock? (a) yeast (b) chalk to mark shadows (c) a battery cell (d) a mirror
  6. 6.⚖️ 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
  7. 7.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) the same spot (b) the time of day (c) shadow length (d) the same stick
  8. 8.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) round (b) short (c) long (d) missing
  9. 9.True or false: clear plastic film is opaque. (a) True (b) False
  10. 10.True or false: a book is translucent. (a) True (b) False
  11. 11.True or false: a sunny open place is not needed for the shadow clock. (a) False (b) True
  12. 12.🛟 While watching shadows outdoors, what must you never do? (a) wear a cap (b) mark with chalk (c) look straight at the Sun (d) sit in the shade
  13. 13.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “shadow length”? (a) we measure it (b) we keep it the same (c) we change it
  14. 14.🕰️ What is a sundial used for? (a) telling the time (b) making rainbows (c) measuring rain (d) weighing things
  15. 15.True or false: a brick is translucent. (a) False (b) True
  16. 16.🔮 Predict: on a fully cloudy day, the sundial ___. (a) shows two times (b) works better (c) does not work well (d) runs faster
  17. 17.🧺 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 straight stick
  18. 18.🔦 Is a brick opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
  19. 19.True or false: yeast is not needed for the shadow clock. (a) False (b) True
  20. 20.📘 Why does a shadow form? (a) the object is cold (b) light bends round it (c) an object blocks light (d) the ground is dark
  21. 21.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the time of day is what we measure. (a) True (b) False
  22. 22.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) the same stick (b) shadow length (c) the time of day
  23. 23.True or false: a magnet is needed for the shadow clock. (a) True (b) False
  24. 24.True or false: a mirror is needed for the shadow clock. (a) True (b) False
  25. 25.🔦 Which of these is opaque? (a) a brick (b) air (c) clear glass (d) frosted glass
  26. 26.🧺 Which of these is needed for the shadow clock? (a) a straight stick (b) a battery cell (c) a mirror (d) a magnet
  27. 27.🔦 Which of these is translucent? (a) clear plastic film (b) your hand (c) a book (d) tissue paper
  28. 28.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) chalk to mark shadows (c) a mirror (d) a sunny open place
  29. 29.🌞 When is a stick’s shadow the shortest? (a) early morning (b) late evening (c) at night (d) around noon
  30. 30.🛟 What should you wear for a long time in the hot sun? (a) nothing on your head (b) a raincoat (c) a woollen sweater (d) a cap or hat
  31. 31.🌍 Why does the stick’s shadow move during the day? (a) the stick grows (b) the stick walks (c) the ground slides (d) Earth keeps spinning
  32. 32.True or false: a sunny open place is needed for the shadow clock. (a) True (b) False
  33. 33.⚖️ 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) the time of day (c) shadow length (d) the stick kept upright
  34. 34.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) west (b) up (c) north (d) east
  35. 35.🔦 Is your hand opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
  36. 36.🔦 Is a wooden board opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
  37. 37.True or false: a mirror is not needed for the shadow clock. (a) False (b) True
  38. 38.🧺 Do we need turmeric powder for the shadow clock? (a) needed (b) not needed
  39. 39.🔦 Which of these is opaque? (a) clean water (b) frosted glass (c) a wooden board (d) air
  40. 40.True or false: yeast is needed for the shadow clock. (a) False (b) True

Answer key

  1. a sunny open place
  2. a magnet
  3. a wooden board
  4. False
  5. chalk to mark shadows
  6. True
  7. the time of day
  8. long
  9. False
  10. False
  11. False
  12. look straight at the Sun
  13. we measure it
  14. telling the time
  15. False
  16. does not work well
  17. a balloon
  18. opaque
  19. True
  20. an object blocks light
  21. False
  22. the same stick
  23. False
  24. False
  25. a brick
  26. a straight stick
  27. tissue paper
  28. a mirror
  29. around noon
  30. a cap or hat
  31. Earth keeps spinning
  32. True
  33. shadow length
  34. west
  35. opaque
  36. opaque
  37. True
  38. not needed
  39. a wooden board
  40. False

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