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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 745 · 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.🔦 Is clear glass opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
  2. 2.📘 Why does a shadow form? (a) the object is cold (b) light bends round it (c) the ground is dark (d) an object blocks light
  3. 3.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a sunny open place (c) a straight stick (d) a battery cell
  4. 4.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a magnet (c) a clock to check (d) chalk to mark shadows
  5. 5.⚖️ 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 time of day (c) the same stick
  6. 6.⚖️ 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) True (b) False
  7. 7.True or false: a battery cell is needed for the shadow clock. (a) True (b) False
  8. 8.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the stick kept upright is kept the same. (a) True (b) False
  9. 9.🧺 Do we need yeast for the shadow clock? (a) not needed (b) needed
  10. 10.🔍 Which is the odd one out? (a) a book (b) a steel plate (c) oily paper (d) a brick
  11. 11.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a balloon (b) chalk to mark shadows (c) a clock to check (d) a straight stick
  12. 12.🔮 Predict: on a fully cloudy day, the sundial ___. (a) shows two times (b) does not work well (c) runs faster (d) works better
  13. 13.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a sunny open place (c) a clock to check (d) a mirror
  14. 14.🧺 Do we need a mirror for the shadow clock? (a) not needed (b) needed
  15. 15.🔍 Which is the odd one out? (a) a wooden board (b) clean water (c) a book (d) your hand
  16. 16.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a magnet (c) a straight stick (d) a clock to check
  17. 17.🔦 Is clean water opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
  18. 18.🧺 Do we need a clock to check for the shadow clock? (a) not needed (b) needed
  19. 19.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) round (b) long (c) missing (d) short
  20. 20.🔦 Is butter paper opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
  21. 21.🧺 Do we need turmeric powder for the shadow clock? (a) not needed (b) needed
  22. 22.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is kept the same. (a) True (b) False
  23. 23.🔦 Which of these is transparent? (a) frosted glass (b) a steel plate (c) air (d) butter paper
  24. 24.🔦 Which of these is opaque? (a) frosted glass (b) a book (c) oily paper (d) clear plastic film
  25. 25.🌞 When is a stick’s shadow the shortest? (a) early morning (b) around noon (c) late evening (d) at night
  26. 26.True or false: a brick is opaque. (a) False (b) True
  27. 27.🧺 Which of these is needed for the shadow clock? (a) a straight stick (b) a magnet (c) a balloon (d) yeast
  28. 28.🛟 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
  29. 29.🔍 Which is the odd one out? (a) a wooden board (b) a steel plate (c) your hand (d) butter paper
  30. 30.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the time of day is kept the same. (a) True (b) False
  31. 31.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) up (b) north (c) west (d) east
  32. 32.⚖️ 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 stick kept upright (c) the time of day (d) the same stick
  33. 33.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is the one thing we change. (a) True (b) False
  34. 34.True or false: clear glass is transparent. (a) True (b) False
  35. 35.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “shadow length”? (a) we keep it the same (b) we change it (c) we measure it
  36. 36.🔦 Which of these is transparent? (a) oily paper (b) tissue paper (c) clear glass (d) a wooden board
  37. 37.True or false: oily paper is translucent. (a) False (b) True
  38. 38.🧺 Which of these is not needed for the shadow clock? (a) yeast (b) a sunny open place (c) a clock to check (d) a straight stick
  39. 39.🧺 Do we need a battery cell for the shadow clock? (a) needed (b) not needed
  40. 40.🛟 While watching shadows outdoors, what must you never do? (a) mark with chalk (b) wear a cap (c) sit in the shade (d) look straight at the Sun

Answer key

  1. transparent
  2. an object blocks light
  3. a battery cell
  4. a magnet
  5. the same stick
  6. False
  7. False
  8. True
  9. not needed
  10. oily paper
  11. a balloon
  12. does not work well
  13. a mirror
  14. not needed
  15. clean water
  16. a magnet
  17. transparent
  18. needed
  19. long
  20. translucent
  21. not needed
  22. True
  23. air
  24. a book
  25. around noon
  26. True
  27. a straight stick
  28. a cap or hat
  29. butter paper
  30. False
  31. west
  32. the time of day
  33. False
  34. True
  35. we measure it
  36. clear glass
  37. True
  38. yeast
  39. not needed
  40. look straight at the Sun

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