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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 601 · 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? Which of these is kept the same? (a) shadow length (b) the stick kept upright (c) the time of day
  2. 2.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a straight stick (c) a clock to check (d) turmeric powder
  3. 3.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same stick”? (a) we measure it (b) we keep it the same (c) we change it
  4. 4.True or false: a balloon is needed for the shadow clock. (a) False (b) True
  5. 5.🔦 Which of these is opaque? (a) oily paper (b) clear plastic film (c) a book (d) clear glass
  6. 6.True or false: turmeric powder is needed for the shadow clock. (a) False (b) True
  7. 7.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the stick kept upright”? (a) we keep it the same (b) we measure it (c) we change it
  8. 8.True or false: a magnet is needed for the shadow clock. (a) False (b) True
  9. 9.📘 Why does a shadow form? (a) an object blocks light (b) the object is cold (c) the ground is dark (d) light bends round it
  10. 10.🧺 Do we need a straight stick for the shadow clock? (a) not needed (b) needed
  11. 11.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) coloured (b) bigger (c) brighter (d) smaller
  12. 12.🔮 Predict: on a fully cloudy day, the sundial ___. (a) shows two times (b) works better (c) runs faster (d) does not work well
  13. 13.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) west (b) up (c) east (d) north
  14. 14.🛟 What should you wear for a long time in the hot sun? (a) a cap or hat (b) a woollen sweater (c) nothing on your head (d) a raincoat
  15. 15.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) round (b) short (c) long (d) missing
  16. 16.🔦 Is clear glass opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
  17. 17.True or false: butter paper is translucent. (a) False (b) True
  18. 18.⚖️ 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
  19. 19.True or false: a balloon is not needed for the shadow clock. (a) False (b) True
  20. 20.True or false: clear plastic film is translucent. (a) True (b) False
  21. 21.🧺 Do we need a clock to check for the shadow clock? (a) needed (b) not needed
  22. 22.🌞 When is a stick’s shadow the shortest? (a) early morning (b) around noon (c) late evening (d) at night
  23. 23.True or false: chalk to mark shadows is not needed for the shadow clock. (a) False (b) True
  24. 24.True or false: clean water is transparent. (a) False (b) True
  25. 25.True or false: oily paper is transparent. (a) False (b) True
  26. 26.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) the stick kept upright (b) shadow length (c) the same stick (d) the time of day
  27. 27.🔍 Which is the odd one out? (a) clear glass (b) clean water (c) air (d) oily paper
  28. 28.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is what we measure. (a) True (b) False
  29. 29.⚖️ 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
  30. 30.🧺 Which of these is not needed for the shadow clock? (a) a clock to check (b) a straight stick (c) a balloon (d) chalk to mark shadows
  31. 31.🧺 Which of these is needed for the shadow clock? (a) a battery cell (b) chalk to mark shadows (c) a balloon (d) a magnet
  32. 32.🔦 Is a book opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
  33. 33.🧺 Which of these is needed for the shadow clock? (a) yeast (b) a mirror (c) a battery cell (d) a straight stick
  34. 34.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) chalk to mark shadows (c) a magnet (d) a clock to check
  35. 35.🌍 Why does the stick’s shadow move during the day? (a) the stick walks (b) the stick grows (c) the ground slides (d) Earth keeps spinning
  36. 36.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a balloon (b) chalk to mark shadows (c) a sunny open place (d) a clock to check
  37. 37.🔦 Is butter paper opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
  38. 38.🔍 Which is the odd one out? (a) a steel plate (b) a wooden board (c) a brick (d) clear plastic film
  39. 39.🔦 Which of these is translucent? (a) clear glass (b) butter paper (c) your hand (d) clear plastic film
  40. 40.True or false: a sunny open place is not needed for the shadow clock. (a) True (b) False

Answer key

  1. the stick kept upright
  2. turmeric powder
  3. we keep it the same
  4. False
  5. a book
  6. False
  7. we keep it the same
  8. False
  9. an object blocks light
  10. needed
  11. bigger
  12. does not work well
  13. west
  14. a cap or hat
  15. long
  16. transparent
  17. True
  18. True
  19. True
  20. False
  21. needed
  22. around noon
  23. False
  24. True
  25. False
  26. the time of day
  27. oily paper
  28. True
  29. False
  30. a balloon
  31. chalk to mark shadows
  32. opaque
  33. a straight stick
  34. a magnet
  35. Earth keeps spinning
  36. a balloon
  37. translucent
  38. clear plastic film
  39. butter paper
  40. False

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