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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 725 · 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.True or false: clean water is transparent. (a) False (b) True
  2. 2.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a magnet (b) a clock to check (c) a straight stick (d) chalk to mark shadows
  3. 3.🧺 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) yeast (d) a clock to check
  4. 4.True or false: clear plastic film is transparent. (a) True (b) False
  5. 5.🧺 Do we need a battery cell for the shadow clock? (a) needed (b) not needed
  6. 6.🧺 Do we need a clock to check for the shadow clock? (a) not needed (b) needed
  7. 7.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) the stick kept upright (b) shadow length (c) the time of day
  8. 8.🧺 Do we need a mirror for the shadow clock? (a) not needed (b) needed
  9. 9.🌍 Why does the stick’s shadow move during the day? (a) the stick walks (b) the ground slides (c) the stick grows (d) Earth keeps spinning
  10. 10.🛟 What should you wear for a long time in the hot sun? (a) nothing on your head (b) a cap or hat (c) a raincoat (d) a woollen sweater
  11. 11.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a battery cell (b) a sunny open place (c) chalk to mark shadows (d) a straight stick
  12. 12.🔍 Which is the odd one out? (a) butter paper (b) a steel plate (c) a wooden board (d) a book
  13. 13.True or false: a balloon is not needed for the shadow clock. (a) False (b) True
  14. 14.🔦 Is a steel plate opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
  15. 15.🔦 Which of these is opaque? (a) clear plastic film (b) clean water (c) butter paper (d) a brick
  16. 16.🧺 Do we need a balloon for the shadow clock? (a) not needed (b) needed
  17. 17.🔦 Which of these is transparent? (a) air (b) tissue paper (c) a brick (d) a book
  18. 18.⚖️ 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 same stick
  19. 19.🔦 Which of these is opaque? (a) clear glass (b) oily paper (c) clear plastic film (d) your hand
  20. 20.⚖️ 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) the time of day (c) shadow length (d) the same stick
  21. 21.🧺 Which of these is needed for the shadow clock? (a) yeast (b) turmeric powder (c) a battery cell (d) a clock to check
  22. 22.True or false: a battery cell is needed for the shadow clock. (a) False (b) True
  23. 23.🧺 Which of these is needed for the shadow clock? (a) chalk to mark shadows (b) a balloon (c) a battery cell (d) a mirror
  24. 24.True or false: a wooden board is transparent. (a) True (b) False
  25. 25.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a balloon (b) a clock to check (c) chalk to mark shadows (d) a sunny open place
  26. 26.🔍 Which is the odd one out? (a) your hand (b) clear plastic film (c) a wooden board (d) a brick
  27. 27.🌞 When is a stick’s shadow the shortest? (a) early morning (b) late evening (c) at night (d) around noon
  28. 28.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) bigger (b) smaller (c) coloured (d) brighter
  29. 29.True or false: turmeric powder is not needed for the shadow clock. (a) False (b) True
  30. 30.True or false: a brick is translucent. (a) False (b) True
  31. 31.🔦 Is clean water opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
  32. 32.🛟 While watching shadows outdoors, what must you never do? (a) wear a cap (b) mark with chalk (c) sit in the shade (d) look straight at the Sun
  33. 33.🧺 Which of these is needed for the shadow clock? (a) a magnet (b) yeast (c) a straight stick (d) a battery cell
  34. 34.True or false: yeast is needed for the shadow clock. (a) True (b) False
  35. 35.⚖️ 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 time of day (c) the same spot (d) the same stick
  36. 36.True or false: a steel plate is translucent. (a) False (b) True
  37. 37.⚖️ 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
  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? What do we do with “the stick kept upright”? (a) we change it (b) we keep it the same (c) we measure it
  40. 40.🔦 Which of these is opaque? (a) a wooden board (b) clear glass (c) frosted glass (d) clean water

Answer key

  1. True
  2. a magnet
  3. yeast
  4. True
  5. not needed
  6. needed
  7. the stick kept upright
  8. not needed
  9. Earth keeps spinning
  10. a cap or hat
  11. a battery cell
  12. butter paper
  13. True
  14. opaque
  15. a brick
  16. not needed
  17. air
  18. the same stick
  19. your hand
  20. the time of day
  21. a clock to check
  22. False
  23. chalk to mark shadows
  24. False
  25. a balloon
  26. clear plastic film
  27. around noon
  28. bigger
  29. True
  30. False
  31. transparent
  32. look straight at the Sun
  33. a straight stick
  34. False
  35. shadow length
  36. False
  37. True
  38. long
  39. we keep it the same
  40. a wooden board

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