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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 797 · 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.

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

Answer key

  1. an object blocks light
  2. a cap or hat
  3. True
  4. oily paper
  5. look straight at the Sun
  6. frosted glass
  7. False
  8. we keep it the same
  9. translucent
  10. opaque
  11. butter paper
  12. False
  13. True
  14. bigger
  15. not needed
  16. True
  17. False
  18. True
  19. a brick
  20. long
  21. False
  22. transparent
  23. air
  24. turmeric powder
  25. True
  26. False
  27. False
  28. we keep it the same
  29. opaque
  30. False
  31. turmeric powder
  32. False
  33. True
  34. a clock to check
  35. shadow length
  36. True
  37. we measure it
  38. opaque
  39. Earth keeps spinning
  40. we change it

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