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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 504 · 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.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) brighter (b) bigger (c) smaller (d) coloured
  2. 2.⚖️ 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 measure it (c) we change it
  3. 3.True or false: turmeric powder is needed for the shadow clock. (a) False (b) True
  4. 4.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) turmeric powder (c) chalk to mark shadows (d) a clock to check
  5. 5.🧺 Do we need a sunny open place for the shadow clock? (a) not needed (b) needed
  6. 6.True or false: turmeric powder is not needed for the shadow clock. (a) True (b) False
  7. 7.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same stick”? (a) we change it (b) we keep it the same (c) we measure it
  8. 8.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is what we measure. (a) True (b) False
  9. 9.🛟 While watching shadows outdoors, what must you never do? (a) wear a cap (b) look straight at the Sun (c) sit in the shade (d) mark with chalk
  10. 10.⚖️ 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
  11. 11.🔦 Which of these is opaque? (a) oily paper (b) frosted glass (c) clear glass (d) a brick
  12. 12.🔦 Which of these is transparent? (a) clear plastic film (b) a steel plate (c) butter paper (d) a wooden board
  13. 13.🔦 Which of these is transparent? (a) your hand (b) tissue paper (c) clean water (d) oily paper
  14. 14.🧺 Which of these is needed for the shadow clock? (a) chalk to mark shadows (b) a balloon (c) a battery cell (d) a mirror
  15. 15.True or false: a brick is transparent. (a) True (b) False
  16. 16.🔮 Predict: on a fully cloudy day, the sundial ___. (a) works better (b) does not work well (c) runs faster (d) shows two times
  17. 17.True or false: clear plastic film is opaque. (a) False (b) True
  18. 18.🔦 Which of these is translucent? (a) a book (b) oily paper (c) a wooden board (d) your hand
  19. 19.🧺 Do we need a magnet for the shadow clock? (a) not needed (b) needed
  20. 20.🧺 Do we need a balloon for the shadow clock? (a) not needed (b) needed
  21. 21.True or false: chalk to mark shadows is not needed for the shadow clock. (a) False (b) True
  22. 22.⚖️ 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
  23. 23.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) short (b) round (c) missing (d) long
  24. 24.🔦 Is clear glass opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
  25. 25.True or false: tissue paper is transparent. (a) True (b) False
  26. 26.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) chalk to mark shadows (c) a mirror (d) a clock to check
  27. 27.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) the same spot (b) the time of day (c) shadow length
  28. 28.True or false: a battery cell is needed for the shadow clock. (a) True (b) False
  29. 29.🛟 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
  30. 30.True or false: air is translucent. (a) True (b) False
  31. 31.🧺 Do we need chalk to mark shadows for the shadow clock? (a) not needed (b) needed
  32. 32.⚖️ 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 same spot (c) the time of day (d) the stick kept upright
  33. 33.True or false: clear plastic film is transparent. (a) True (b) False
  34. 34.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) the time of day (b) shadow length (c) the stick kept upright
  35. 35.🧺 Which of these is needed for the shadow clock? (a) a straight stick (b) a balloon (c) a magnet (d) yeast
  36. 36.🔍 Which is the odd one out? (a) clear glass (b) clean water (c) clear plastic film (d) butter paper
  37. 37.🔍 Which is the odd one out? (a) clear plastic film (b) a brick (c) a wooden board (d) a steel plate
  38. 38.🔦 Which of these is opaque? (a) a wooden board (b) air (c) butter paper (d) clear plastic film
  39. 39.True or false: a mirror is needed for the shadow clock. (a) True (b) False
  40. 40.🧺 Do we need a straight stick for the shadow clock? (a) needed (b) not needed

Answer key

  1. bigger
  2. we change it
  3. False
  4. turmeric powder
  5. needed
  6. True
  7. we keep it the same
  8. False
  9. look straight at the Sun
  10. False
  11. a brick
  12. clear plastic film
  13. clean water
  14. chalk to mark shadows
  15. False
  16. does not work well
  17. False
  18. oily paper
  19. not needed
  20. not needed
  21. False
  22. False
  23. long
  24. transparent
  25. False
  26. a mirror
  27. the same spot
  28. False
  29. a cap or hat
  30. False
  31. needed
  32. shadow length
  33. True
  34. the stick kept upright
  35. a straight stick
  36. butter paper
  37. clear plastic film
  38. a wooden board
  39. False
  40. needed

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