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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 833 · 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.🧺 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 battery cell (d) a clock to check
  2. 2.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) smaller (b) brighter (c) bigger (d) coloured
  3. 3.🔦 Which of these is translucent? (a) frosted glass (b) a wooden board (c) clear glass (d) a book
  4. 4.🛟 While watching shadows outdoors, what must you never do? (a) look straight at the Sun (b) mark with chalk (c) sit in the shade (d) wear a cap
  5. 5.🧺 Which of these is needed for the shadow clock? (a) a magnet (b) a balloon (c) a sunny open place (d) turmeric powder
  6. 6.True or false: a mirror is not needed for the shadow clock. (a) True (b) False
  7. 7.🧺 Do we need a sunny open place for the shadow clock? (a) needed (b) not needed
  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 keep it the same (b) we measure it (c) we change it
  9. 9.⚖️ 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
  10. 10.🔦 Which of these is transparent? (a) a steel plate (b) butter paper (c) air (d) a wooden board
  11. 11.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) round (b) missing (c) long (d) short
  12. 12.🧺 Do we need chalk to mark shadows for the shadow clock? (a) needed (b) not needed
  13. 13.🌍 Why does the stick’s shadow move during the day? (a) the ground slides (b) the stick grows (c) Earth keeps spinning (d) the stick walks
  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.🧺 Do we need a balloon for the shadow clock? (a) needed (b) not needed
  16. 16.🕰️ What is a sundial used for? (a) telling the time (b) making rainbows (c) measuring rain (d) weighing things
  17. 17.🔦 Is your hand opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
  18. 18.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) a sunny open place (c) a mirror (d) a straight stick
  19. 19.🧺 Do we need turmeric powder for the shadow clock? (a) needed (b) not needed
  20. 20.True or false: yeast is not needed for the shadow clock. (a) False (b) True
  21. 21.⚖️ 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) False (b) True
  22. 22.🔦 Is a brick opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
  23. 23.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same stick”? (a) we change it (b) we measure it (c) we keep it the same
  24. 24.True or false: a magnet is needed for the shadow clock. (a) False (b) True
  25. 25.⚖️ 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 stick kept upright (c) shadow length (d) the same spot
  26. 26.⚖️ 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
  27. 27.🔦 Which of these is translucent? (a) a steel plate (b) a brick (c) butter paper (d) clear glass
  28. 28.🔍 Which is the odd one out? (a) a wooden board (b) your hand (c) a steel plate (d) tissue paper
  29. 29.True or false: clean water is translucent. (a) True (b) False
  30. 30.🔍 Which is the odd one out? (a) frosted glass (b) a steel plate (c) butter paper (d) oily paper
  31. 31.True or false: a magnet is not needed for the shadow clock. (a) False (b) True
  32. 32.📘 Why does a shadow form? (a) the object is cold (b) light bends round it (c) the ground is dark (d) an object blocks light
  33. 33.🔦 Is a wooden board opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
  34. 34.🧺 Which of these is needed for the shadow clock? (a) a clock to check (b) a magnet (c) a mirror (d) yeast
  35. 35.🔦 Is tissue paper opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
  36. 36.⚖️ 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 keep it the same (c) we change it
  37. 37.🔍 Which is the odd one out? (a) air (b) tissue paper (c) butter paper (d) frosted glass
  38. 38.True or false: a wooden board is opaque. (a) True (b) False
  39. 39.🧺 Do we need a battery cell for the shadow clock? (a) not needed (b) needed
  40. 40.🧺 Which of these is not needed for the shadow clock? (a) a battery cell (b) a clock to check (c) a sunny open place (d) a straight stick

Answer key

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

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