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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 413 · 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.🧺 Which of these is needed for the shadow clock? (a) a battery cell (b) a balloon (c) chalk to mark shadows (d) yeast
  2. 2.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same stick”? (a) we keep it the same (b) we measure it (c) we change it
  3. 3.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is what we measure. (a) False (b) True
  4. 4.🔦 Which of these is transparent? (a) a book (b) clear glass (c) a wooden board (d) tissue paper
  5. 5.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the time of day is kept the same. (a) True (b) False
  6. 6.🔦 Which of these is opaque? (a) a steel plate (b) air (c) tissue paper (d) clear plastic film
  7. 7.🔦 Is a wooden board opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
  8. 8.True or false: oily paper is translucent. (a) False (b) True
  9. 9.🧺 Do we need a clock to check for the shadow clock? (a) needed (b) not needed
  10. 10.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “shadow length”? (a) we change it (b) we keep it the same (c) we measure it
  11. 11.True or false: a clock to check is not needed for the shadow clock. (a) True (b) False
  12. 12.⚖️ 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 time of day (c) the stick kept upright
  13. 13.True or false: a sunny open place is not needed for the shadow clock. (a) False (b) True
  14. 14.🛟 What should you wear for a long time in the hot sun? (a) a woollen sweater (b) a raincoat (c) a cap or hat (d) nothing on your head
  15. 15.🔦 Is a book opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
  16. 16.🔦 Which of these is transparent? (a) tissue paper (b) frosted glass (c) clean water (d) a brick
  17. 17.🔦 Is clear plastic film opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
  18. 18.True or false: a brick is opaque. (a) False (b) True
  19. 19.🔍 Which is the odd one out? (a) frosted glass (b) butter paper (c) tissue paper (d) a book
  20. 20.🕰️ What is a sundial used for? (a) weighing things (b) measuring rain (c) telling the time (d) making rainbows
  21. 21.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a balloon (c) chalk to mark shadows (d) a sunny open place
  22. 22.🧺 Do we need a mirror for the shadow clock? (a) needed (b) not needed
  23. 23.🧺 Do we need a straight stick for the shadow clock? (a) needed (b) not needed
  24. 24.⚖️ 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 stick (b) shadow length (c) the same spot (d) the time of day
  25. 25.🧺 Do we need chalk to mark shadows for the shadow clock? (a) needed (b) not needed
  26. 26.🛟 While watching shadows outdoors, what must you never do? (a) sit in the shade (b) mark with chalk (c) look straight at the Sun (d) wear a cap
  27. 27.True or false: clean water is transparent. (a) True (b) False
  28. 28.True or false: air is transparent. (a) False (b) True
  29. 29.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) chalk to mark shadows (c) a balloon (d) a clock to check
  30. 30.🧺 Do we need a sunny open place for the shadow clock? (a) not needed (b) needed
  31. 31.🧺 Do we need a magnet for the shadow clock? (a) needed (b) not needed
  32. 32.🧺 Do we need a battery cell for the shadow clock? (a) needed (b) not needed
  33. 33.🔍 Which is the odd one out? (a) a steel plate (b) your hand (c) butter paper (d) a wooden board
  34. 34.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a sunny open place (c) a magnet (d) a straight stick
  35. 35.🧺 Do we need turmeric powder for the shadow clock? (a) needed (b) not needed
  36. 36.📘 Why does a shadow form? (a) light bends round it (b) an object blocks light (c) the object is cold (d) the ground is dark
  37. 37.🔍 Which is the odd one out? (a) clean water (b) tissue paper (c) butter paper (d) frosted glass
  38. 38.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) brighter (b) bigger (c) coloured (d) smaller
  39. 39.🔍 Which is the odd one out? (a) a steel plate (b) your hand (c) a brick (d) clear glass
  40. 40.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) missing (b) long (c) short (d) round

Answer key

  1. chalk to mark shadows
  2. we keep it the same
  3. True
  4. clear glass
  5. False
  6. a steel plate
  7. opaque
  8. True
  9. needed
  10. we measure it
  11. False
  12. the stick kept upright
  13. False
  14. a cap or hat
  15. opaque
  16. clean water
  17. transparent
  18. True
  19. a book
  20. telling the time
  21. a balloon
  22. not needed
  23. needed
  24. the time of day
  25. needed
  26. look straight at the Sun
  27. True
  28. True
  29. a balloon
  30. needed
  31. not needed
  32. not needed
  33. butter paper
  34. a magnet
  35. not needed
  36. an object blocks light
  37. clean water
  38. bigger
  39. clear glass
  40. long

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