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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 380 · 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.🧺 Do we need chalk to mark shadows for the shadow clock? (a) not needed (b) needed
  2. 2.🔦 Which of these is opaque? (a) clear plastic film (b) clear glass (c) a book (d) frosted glass
  3. 3.🔦 Which of these is transparent? (a) your hand (b) butter paper (c) clear glass (d) a wooden board
  4. 4.🔍 Which is the odd one out? (a) clear plastic film (b) a wooden board (c) a brick (d) your hand
  5. 5.🔦 Which of these is transparent? (a) tissue paper (b) clear plastic film (c) a book (d) a steel plate
  6. 6.True or false: a balloon is needed for the shadow clock. (a) False (b) True
  7. 7.🌞 When is a stick’s shadow the shortest? (a) late evening (b) around noon (c) at night (d) early morning
  8. 8.📘 Why does a shadow form? (a) an object blocks light (b) the object is cold (c) light bends round it (d) the ground is dark
  9. 9.🧺 Which of these is needed for the shadow clock? (a) a mirror (b) a magnet (c) a straight stick (d) a battery cell
  10. 10.🧺 Do we need turmeric powder for the shadow clock? (a) not needed (b) needed
  11. 11.🛟 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
  12. 12.True or false: tissue paper is opaque. (a) True (b) False
  13. 13.🔍 Which is the odd one out? (a) a steel plate (b) a wooden board (c) a book (d) oily paper
  14. 14.🛟 While watching shadows outdoors, what must you never do? (a) wear a cap (b) look straight at the Sun (c) mark with chalk (d) sit in the shade
  15. 15.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) coloured (b) bigger (c) smaller (d) brighter
  16. 16.⚖️ 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 change it (c) we keep it the same
  17. 17.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a straight stick (c) a magnet (d) chalk to mark shadows
  18. 18.🔦 Which of these is transparent? (a) tissue paper (b) frosted glass (c) butter paper (d) air
  19. 19.🔍 Which is the odd one out? (a) a steel plate (b) a wooden board (c) a book (d) clean water
  20. 20.🧺 Do we need a sunny open place for the shadow clock? (a) not needed (b) needed
  21. 21.True or false: a sunny open place is not needed for the shadow clock. (a) False (b) True
  22. 22.🔍 Which is the odd one out? (a) your hand (b) a book (c) butter paper (d) a steel plate
  23. 23.🧺 Which of these is needed for the shadow clock? (a) yeast (b) a balloon (c) a magnet (d) a clock to check
  24. 24.True or false: clear glass is translucent. (a) False (b) True
  25. 25.🔍 Which is the odd one out? (a) butter paper (b) air (c) oily paper (d) tissue paper
  26. 26.🔍 Which is the odd one out? (a) frosted glass (b) your hand (c) a steel plate (d) a brick
  27. 27.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the stick kept upright”? (a) we measure it (b) we keep it the same (c) we change it
  28. 28.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) west (b) up (c) north (d) east
  29. 29.🔦 Is a steel plate opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
  30. 30.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) the same stick (b) the same spot (c) the time of day (d) shadow length
  31. 31.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) a sunny open place (c) a balloon (d) chalk to mark shadows
  32. 32.🧺 Do we need a magnet for the shadow clock? (a) needed (b) not needed
  33. 33.🔮 Predict: on a fully cloudy day, the sundial ___. (a) runs faster (b) shows two times (c) does not work well (d) works better
  34. 34.⚖️ 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
  35. 35.🧺 Which of these is not needed for the shadow clock? (a) a clock to check (b) a sunny open place (c) chalk to mark shadows (d) a mirror
  36. 36.🧺 Which of these is not needed for the shadow clock? (a) a balloon (b) a sunny open place (c) a clock to check (d) a straight stick
  37. 37.🧺 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) yeast
  38. 38.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) round (b) missing (c) long (d) short
  39. 39.⚖️ 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 spot (c) the time of day (d) the same stick
  40. 40.🧺 Do we need a straight stick for the shadow clock? (a) not needed (b) needed

Answer key

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

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