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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 834 · 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: on a fully cloudy day, the sundial ___. (a) works better (b) does not work well (c) runs faster (d) shows two times
  2. 2.⚖️ 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
  3. 3.⚖️ 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
  4. 4.🔦 Which of these is translucent? (a) tissue paper (b) a book (c) your hand (d) a wooden board
  5. 5.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) the time of day (b) the same spot (c) the stick kept upright (d) shadow length
  6. 6.True or false: a brick is translucent. (a) False (b) True
  7. 7.🔦 Is clean water opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
  8. 8.True or false: a balloon is not needed for the shadow clock. (a) False (b) True
  9. 9.True or false: a straight stick is not needed for the shadow clock. (a) False (b) True
  10. 10.🔦 Which of these is opaque? (a) oily paper (b) a wooden board (c) butter paper (d) clear plastic film
  11. 11.🌍 Why does the stick’s shadow move during the day? (a) the stick grows (b) the stick walks (c) the ground slides (d) Earth keeps spinning
  12. 12.🔍 Which is the odd one out? (a) clear glass (b) air (c) frosted glass (d) clean water
  13. 13.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) a sunny open place (c) chalk to mark shadows (d) turmeric powder
  14. 14.🔦 Which of these is opaque? (a) tissue paper (b) a steel plate (c) frosted glass (d) clear plastic film
  15. 15.🧺 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 clock to check (d) a battery cell
  16. 16.🔍 Which is the odd one out? (a) air (b) clear glass (c) clean water (d) a brick
  17. 17.🛟 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
  18. 18.🧺 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 balloon (d) a clock to check
  19. 19.True or false: clear glass is transparent. (a) True (b) False
  20. 20.True or false: a book is opaque. (a) False (b) True
  21. 21.True or false: a balloon is needed for the shadow clock. (a) False (b) True
  22. 22.True or false: your hand is opaque. (a) False (b) True
  23. 23.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) missing (b) round (c) long (d) short
  24. 24.🛟 While watching shadows outdoors, what must you never do? (a) sit in the shade (b) look straight at the Sun (c) mark with chalk (d) wear a cap
  25. 25.🔦 Which of these is transparent? (a) a book (b) frosted glass (c) butter paper (d) clear glass
  26. 26.True or false: a wooden board is opaque. (a) False (b) True
  27. 27.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) the same spot (b) shadow length (c) the stick kept upright (d) the time of day
  28. 28.🔦 Which of these is translucent? (a) clean water (b) butter paper (c) clear plastic film (d) your hand
  29. 29.🧺 Which of these is needed for the shadow clock? (a) yeast (b) a balloon (c) a straight stick (d) a magnet
  30. 30.True or false: a clock to check is not needed for the shadow clock. (a) False (b) True
  31. 31.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the stick kept upright is the one thing we change. (a) True (b) False
  32. 32.True or false: turmeric powder is not needed for the shadow clock. (a) False (b) True
  33. 33.⚖️ 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
  34. 34.True or false: air is opaque. (a) True (b) False
  35. 35.🧺 Do we need a clock to check for the shadow clock? (a) not needed (b) needed
  36. 36.🧺 Do we need a straight stick for the shadow clock? (a) not needed (b) needed
  37. 37.🔦 Which of these is transparent? (a) air (b) butter paper (c) a book (d) a wooden board
  38. 38.⚖️ 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) the stick kept upright (c) shadow length
  39. 39.🧺 Do we need a battery cell for the shadow clock? (a) needed (b) not needed
  40. 40.⚖️ 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

Answer key

  1. does not work well
  2. False
  3. we change it
  4. tissue paper
  5. shadow length
  6. False
  7. transparent
  8. True
  9. False
  10. a wooden board
  11. Earth keeps spinning
  12. frosted glass
  13. turmeric powder
  14. a steel plate
  15. a battery cell
  16. a brick
  17. a cap or hat
  18. a balloon
  19. True
  20. True
  21. False
  22. True
  23. long
  24. look straight at the Sun
  25. clear glass
  26. True
  27. the time of day
  28. butter paper
  29. a straight stick
  30. False
  31. False
  32. True
  33. we keep it the same
  34. False
  35. needed
  36. needed
  37. air
  38. the stick kept upright
  39. not needed
  40. True

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