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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 11 · 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 turmeric powder for the shadow clock? (a) needed (b) not needed
  2. 2.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a sunny open place (c) a straight stick (d) a mirror
  3. 3.🔍 Which is the odd one out? (a) clean water (b) a wooden board (c) a brick (d) a book
  4. 4.True or false: clear plastic film is opaque. (a) True (b) False
  5. 5.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is kept the same. (a) False (b) True
  6. 6.True or false: a battery cell is not needed for the shadow clock. (a) False (b) True
  7. 7.🧺 Which of these is needed for the shadow clock? (a) a battery cell (b) a magnet (c) a straight stick (d) turmeric powder
  8. 8.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a clock to check (c) chalk to mark shadows (d) a balloon
  9. 9.True or false: yeast is not needed for the shadow clock. (a) False (b) True
  10. 10.🔦 Is tissue paper opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
  11. 11.🌞 When is a stick’s shadow the shortest? (a) at night (b) early morning (c) around noon (d) late evening
  12. 12.🔦 Which of these is opaque? (a) frosted glass (b) your hand (c) oily paper (d) clear glass
  13. 13.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) long (b) round (c) missing (d) short
  14. 14.🛟 While watching shadows outdoors, what must you never do? (a) mark with chalk (b) look straight at the Sun (c) sit in the shade (d) wear a cap
  15. 15.🧺 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) a battery cell (d) a straight stick
  16. 16.True or false: a book is transparent. (a) True (b) False
  17. 17.True or false: frosted glass is transparent. (a) False (b) True
  18. 18.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a magnet (b) a sunny open place (c) chalk to mark shadows (d) a straight stick
  19. 19.🔍 Which is the odd one out? (a) oily paper (b) your hand (c) tissue paper (d) frosted glass
  20. 20.🔍 Which is the odd one out? (a) frosted glass (b) oily paper (c) tissue paper (d) a brick
  21. 21.⚖️ 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 same spot (c) the time of day
  22. 22.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a clock to check (c) a sunny open place (d) yeast
  23. 23.🔦 Is a brick opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
  24. 24.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the time of day”? (a) we change it (b) we keep it the same (c) we measure it
  25. 25.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is kept the same. (a) True (b) False
  26. 26.🔍 Which is the odd one out? (a) your hand (b) oily paper (c) a brick (d) a steel plate
  27. 27.True or false: oily paper is transparent. (a) True (b) False
  28. 28.True or false: a battery cell is needed for the shadow clock. (a) False (b) True
  29. 29.🧺 Which of these is needed for the shadow clock? (a) a mirror (b) a magnet (c) a clock to check (d) turmeric powder
  30. 30.🧺 Which of these is needed for the shadow clock? (a) yeast (b) a sunny open place (c) turmeric powder (d) a battery cell
  31. 31.🔦 Is air opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
  32. 32.True or false: a sunny open place 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.📘 Why does a shadow form? (a) the object is cold (b) the ground is dark (c) an object blocks light (d) light bends round it
  35. 35.🔦 Which of these is translucent? (a) air (b) a book (c) frosted glass (d) your hand
  36. 36.🔦 Is clear glass opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
  37. 37.🛟 What should you wear for a long time in the hot sun? (a) a woollen sweater (b) nothing on your head (c) a cap or hat (d) a raincoat
  38. 38.🔍 Which is the odd one out? (a) your hand (b) air (c) a wooden board (d) a book
  39. 39.🕰️ What is a sundial used for? (a) making rainbows (b) measuring rain (c) telling the time (d) weighing things
  40. 40.🧺 Do we need a straight stick for the shadow clock? (a) not needed (b) needed

Answer key

  1. not needed
  2. a mirror
  3. clean water
  4. False
  5. True
  6. True
  7. a straight stick
  8. a balloon
  9. True
  10. translucent
  11. around noon
  12. your hand
  13. long
  14. look straight at the Sun
  15. a battery cell
  16. False
  17. False
  18. a magnet
  19. your hand
  20. a brick
  21. the same spot
  22. yeast
  23. opaque
  24. we change it
  25. False
  26. oily paper
  27. False
  28. False
  29. a clock to check
  30. a sunny open place
  31. transparent
  32. False
  33. we keep it the same
  34. an object blocks light
  35. frosted glass
  36. transparent
  37. a cap or hat
  38. air
  39. telling the time
  40. needed

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