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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 975 · 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.🛟 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
  2. 2.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a clock to check (c) a battery cell (d) a sunny open place
  3. 3.🧺 Which of these is needed for the shadow clock? (a) a magnet (b) a balloon (c) chalk to mark shadows (d) turmeric powder
  4. 4.True or false: a battery cell is not needed for the shadow clock. (a) True (b) False
  5. 5.🔍 Which is the odd one out? (a) clear glass (b) clear plastic film (c) butter paper (d) clean water
  6. 6.⚖️ 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 stick kept upright (c) the same spot (d) the time of day
  7. 7.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) coloured (b) bigger (c) brighter (d) smaller
  8. 8.🔦 Which of these is transparent? (a) a brick (b) tissue paper (c) a wooden board (d) air
  9. 9.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) missing (b) long (c) short (d) round
  10. 10.True or false: a steel plate is opaque. (a) False (b) True
  11. 11.🧺 Do we need a straight stick for the shadow clock? (a) not needed (b) needed
  12. 12.True or false: a book is translucent. (a) True (b) False
  13. 13.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) turmeric powder (b) a straight stick (c) a clock to check (d) chalk to mark shadows
  14. 14.🔦 Is a wooden board opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
  15. 15.🛟 What should you wear for a long time in the hot sun? (a) a cap or hat (b) a raincoat (c) nothing on your head (d) a woollen sweater
  16. 16.True or false: frosted glass is opaque. (a) False (b) True
  17. 17.⚖️ 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
  18. 18.⚖️ 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 stick (b) the time of day (c) the same spot (d) the stick kept upright
  19. 19.True or false: tissue paper is opaque. (a) True (b) False
  20. 20.🔍 Which is the odd one out? (a) frosted glass (b) butter paper (c) tissue paper (d) clean water
  21. 21.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a clock to check (c) a mirror (d) chalk to mark shadows
  22. 22.True or false: a battery cell is needed for the shadow clock. (a) False (b) True
  23. 23.🌍 Why does the stick’s shadow move during the day? (a) the stick grows (b) the stick walks (c) Earth keeps spinning (d) the ground slides
  24. 24.🔦 Is tissue paper opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
  25. 25.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) north (b) east (c) up (d) west
  26. 26.🔍 Which is the odd one out? (a) oily paper (b) air (c) clear plastic film (d) clear glass
  27. 27.🧺 Do we need a mirror for the shadow clock? (a) needed (b) not needed
  28. 28.🔮 Predict: on a fully cloudy day, the sundial ___. (a) does not work well (b) runs faster (c) shows two times (d) works better
  29. 29.⚖️ 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 change it (c) we measure it
  30. 30.📘 Why does a shadow form? (a) the ground is dark (b) the object is cold (c) an object blocks light (d) light bends round it
  31. 31.🔍 Which is the odd one out? (a) your hand (b) clean water (c) clear plastic film (d) air
  32. 32.🔦 Which of these is opaque? (a) air (b) butter paper (c) clear glass (d) your hand
  33. 33.True or false: a magnet is not needed for the shadow clock. (a) False (b) True
  34. 34.🔦 Which of these is transparent? (a) oily paper (b) frosted glass (c) clear plastic film (d) a wooden board
  35. 35.🔍 Which is the odd one out? (a) clear glass (b) frosted glass (c) butter paper (d) oily paper
  36. 36.🧺 Do we need a sunny open place for the shadow clock? (a) not needed (b) needed
  37. 37.🔦 Which of these is translucent? (a) a wooden board (b) a steel plate (c) a book (d) butter paper
  38. 38.🕰️ What is a sundial used for? (a) telling the time (b) making rainbows (c) measuring rain (d) weighing things
  39. 39.🔦 Is frosted glass opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
  40. 40.True or false: frosted glass is translucent. (a) True (b) False

Answer key

  1. look straight at the Sun
  2. a battery cell
  3. chalk to mark shadows
  4. True
  5. butter paper
  6. shadow length
  7. bigger
  8. air
  9. long
  10. True
  11. needed
  12. False
  13. turmeric powder
  14. opaque
  15. a cap or hat
  16. False
  17. True
  18. the time of day
  19. False
  20. clean water
  21. a mirror
  22. False
  23. Earth keeps spinning
  24. translucent
  25. west
  26. oily paper
  27. not needed
  28. does not work well
  29. we change it
  30. an object blocks light
  31. your hand
  32. your hand
  33. True
  34. clear plastic film
  35. clear glass
  36. needed
  37. butter paper
  38. telling the time
  39. translucent
  40. True

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