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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 813 · 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.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a magnet (b) a sunny open place (c) a straight stick (d) a clock to check
  2. 2.🧺 Do we need a battery cell for the shadow clock? (a) not needed (b) needed
  3. 3.🔍 Which is the odd one out? (a) your hand (b) a book (c) a steel plate (d) clear glass
  4. 4.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) a balloon (c) chalk to mark shadows (d) a sunny open place
  5. 5.⚖️ 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
  6. 6.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) turmeric powder (b) chalk to mark shadows (c) a sunny open place (d) a straight stick
  7. 7.🕰️ What is a sundial used for? (a) making rainbows (b) measuring rain (c) weighing things (d) telling the time
  8. 8.🔮 Predict: on a fully cloudy day, the sundial ___. (a) does not work well (b) shows two times (c) runs faster (d) works better
  9. 9.True or false: a clock to check is needed for the shadow clock. (a) True (b) False
  10. 10.True or false: a book is opaque. (a) True (b) False
  11. 11.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is kept the same. (a) False (b) True
  12. 12.⚖️ 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
  13. 13.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) missing (b) long (c) round (d) short
  14. 14.🔦 Is clean water opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
  15. 15.🔦 Is butter paper opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
  16. 16.True or false: chalk to mark shadows is not needed for the shadow clock. (a) True (b) False
  17. 17.🌍 Why does the stick’s shadow move during the day? (a) Earth keeps spinning (b) the ground slides (c) the stick walks (d) the stick grows
  18. 18.📘 Why does a shadow form? (a) the object is cold (b) the ground is dark (c) light bends round it (d) an object blocks light
  19. 19.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is the one thing we change. (a) False (b) True
  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 measure it (c) we keep it the same
  21. 21.🔦 Is clear glass opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
  22. 22.🧺 Which of these is needed for the shadow clock? (a) turmeric powder (b) a mirror (c) a straight stick (d) a magnet
  23. 23.🧺 Do we need a clock to check for the shadow clock? (a) needed (b) not needed
  24. 24.⚖️ 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) False (b) True
  25. 25.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) shadow length (b) the same stick (c) the same spot (d) the time of day
  26. 26.🛟 What should you wear for a long time in the hot sun? (a) a woollen sweater (b) a cap or hat (c) a raincoat (d) nothing on your head
  27. 27.True or false: turmeric powder is needed for the shadow clock. (a) True (b) False
  28. 28.🌞 When is a stick’s shadow the shortest? (a) early morning (b) late evening (c) at night (d) around noon
  29. 29.🔦 Which of these is opaque? (a) a brick (b) clean water (c) oily paper (d) butter paper
  30. 30.🔦 Which of these is transparent? (a) your hand (b) tissue paper (c) butter paper (d) air
  31. 31.🧺 Do we need a mirror for the shadow clock? (a) not needed (b) needed
  32. 32.🔦 Which of these is translucent? (a) air (b) tissue paper (c) a wooden board (d) clean water
  33. 33.🔦 Is tissue paper opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
  34. 34.True or false: a straight stick is not needed for the shadow clock. (a) True (b) False
  35. 35.🔍 Which is the odd one out? (a) a brick (b) your hand (c) clean water (d) a steel plate
  36. 36.🔍 Which is the odd one out? (a) a wooden board (b) a steel plate (c) butter paper (d) a brick
  37. 37.True or false: clear glass is opaque. (a) False (b) True
  38. 38.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is what we measure. (a) False (b) True
  39. 39.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) north (b) up (c) east (d) west
  40. 40.🧺 Which of these is needed for the shadow clock? (a) a battery cell (b) a mirror (c) a balloon (d) a clock to check

Answer key

  1. a magnet
  2. not needed
  3. clear glass
  4. a balloon
  5. True
  6. turmeric powder
  7. telling the time
  8. does not work well
  9. True
  10. True
  11. True
  12. we change it
  13. long
  14. transparent
  15. translucent
  16. False
  17. Earth keeps spinning
  18. an object blocks light
  19. False
  20. we keep it the same
  21. transparent
  22. a straight stick
  23. needed
  24. False
  25. the time of day
  26. a cap or hat
  27. False
  28. around noon
  29. a brick
  30. air
  31. not needed
  32. tissue paper
  33. translucent
  34. False
  35. clean water
  36. butter paper
  37. False
  38. False
  39. west
  40. a clock to check

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