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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 828 · 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) not needed (b) needed
  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 measure it (b) we change it (c) we keep it the same
  3. 3.⚖️ 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) True (b) False
  4. 4.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a straight stick (c) chalk to mark shadows (d) a mirror
  5. 5.🧺 Do we need a straight stick for the shadow clock? (a) needed (b) not needed
  6. 6.🧺 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 magnet (d) a clock to check
  7. 7.🔦 Is butter paper opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
  8. 8.🔦 Is clear plastic film opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
  9. 9.⚖️ 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
  10. 10.🧺 Do we need a sunny open place for the shadow clock? (a) not needed (b) needed
  11. 11.🔦 Is oily paper opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
  12. 12.📘 Why does a shadow form? (a) an object blocks light (b) the ground is dark (c) light bends round it (d) the object is cold
  13. 13.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) bigger (b) coloured (c) brighter (d) smaller
  14. 14.🔦 Which of these is translucent? (a) clear plastic film (b) a steel plate (c) clean water (d) butter paper
  15. 15.🔦 Which of these is transparent? (a) a book (b) air (c) a wooden board (d) oily paper
  16. 16.🔦 Which of these is opaque? (a) oily paper (b) air (c) a book (d) butter paper
  17. 17.🧺 Do we need a balloon for the shadow clock? (a) not needed (b) needed
  18. 18.🧺 Which of these is needed for the shadow clock? (a) a battery cell (b) a mirror (c) a clock to check (d) turmeric powder
  19. 19.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a clock to check (c) a balloon (d) chalk to mark shadows
  20. 20.🛟 What should you wear for a long time in the hot sun? (a) a woollen sweater (b) nothing on your head (c) a raincoat (d) a cap or hat
  21. 21.🔦 Is a wooden board opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
  22. 22.⚖️ 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 change it (c) we keep it the same
  23. 23.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) a sunny open place (c) yeast (d) a clock to check
  24. 24.🕰️ What is a sundial used for? (a) measuring rain (b) telling the time (c) making rainbows (d) weighing things
  25. 25.🔦 Is clear glass opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
  26. 26.🧺 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 battery cell
  27. 27.🔦 Which of these is opaque? (a) air (b) clean water (c) a steel plate (d) butter paper
  28. 28.True or false: a brick is opaque. (a) False (b) True
  29. 29.True or false: a battery cell is needed for the shadow clock. (a) False (b) True
  30. 30.🔦 Is your hand opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
  31. 31.🔍 Which is the odd one out? (a) your hand (b) a book (c) clear plastic film (d) a wooden board
  32. 32.True or false: a straight stick is not needed for the shadow clock. (a) True (b) False
  33. 33.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the stick kept upright is what we measure. (a) False (b) True
  34. 34.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) round (b) short (c) missing (d) long
  35. 35.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a magnet (c) a sunny open place (d) a straight stick
  36. 36.🔦 Is frosted glass opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
  37. 37.🔍 Which is the odd one out? (a) butter paper (b) air (c) clean water (d) clear glass
  38. 38.🔦 Which of these is transparent? (a) a brick (b) clear glass (c) frosted glass (d) butter paper
  39. 39.🔍 Which is the odd one out? (a) clean water (b) your hand (c) air (d) clear glass
  40. 40.🧺 Do we need chalk to mark shadows for the shadow clock? (a) needed (b) not needed

Answer key

  1. not needed
  2. we change it
  3. False
  4. a mirror
  5. needed
  6. a magnet
  7. translucent
  8. transparent
  9. the stick kept upright
  10. needed
  11. translucent
  12. an object blocks light
  13. bigger
  14. butter paper
  15. air
  16. a book
  17. not needed
  18. a clock to check
  19. a balloon
  20. a cap or hat
  21. opaque
  22. we keep it the same
  23. yeast
  24. telling the time
  25. transparent
  26. a battery cell
  27. a steel plate
  28. True
  29. False
  30. opaque
  31. clear plastic film
  32. False
  33. False
  34. long
  35. a magnet
  36. translucent
  37. butter paper
  38. clear glass
  39. your hand
  40. needed

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