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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 530 · 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.True or false: a straight stick is not needed for the shadow clock. (a) True (b) False
  2. 2.🔦 Is a wooden board opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
  3. 3.🛟 What should you wear for a long time in the hot sun? (a) a cap or hat (b) a raincoat (c) nothing on your head (d) a woollen sweater
  4. 4.⚖️ 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
  5. 5.🔦 Which of these is opaque? (a) a wooden board (b) clear glass (c) clear plastic film (d) air
  6. 6.🌞 When is a stick’s shadow the shortest? (a) early morning (b) late evening (c) around noon (d) at night
  7. 7.🧺 Do we need a sunny open place for the shadow clock? (a) not needed (b) needed
  8. 8.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) turmeric powder (c) a clock to check (d) a sunny open place
  9. 9.🧺 Do we need a magnet for the shadow clock? (a) not needed (b) needed
  10. 10.True or false: a balloon is not needed for the shadow clock. (a) True (b) False
  11. 11.True or false: air is transparent. (a) True (b) False
  12. 12.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) a battery cell (c) a straight stick (d) chalk to mark shadows
  13. 13.True or false: yeast is needed for the shadow clock. (a) False (b) True
  14. 14.🧺 Which of these is needed for the shadow clock? (a) yeast (b) a balloon (c) a clock to check (d) a magnet
  15. 15.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) the same spot (b) shadow length (c) the time of day (d) the same stick
  16. 16.🧺 Do we need a straight stick for the shadow clock? (a) needed (b) not needed
  17. 17.🔦 Which of these is translucent? (a) air (b) butter paper (c) a book (d) a wooden board
  18. 18.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is the one thing we change. (a) True (b) False
  19. 19.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) east (b) west (c) up (d) north
  20. 20.🛟 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
  21. 21.True or false: clean water is transparent. (a) True (b) False
  22. 22.🔍 Which is the odd one out? (a) oily paper (b) a wooden board (c) tissue paper (d) butter paper
  23. 23.🕰️ What is a sundial used for? (a) telling the time (b) making rainbows (c) measuring rain (d) weighing things
  24. 24.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) the same spot (b) shadow length (c) the time of day
  25. 25.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) the time of day (b) the same spot (c) the stick kept upright (d) shadow length
  26. 26.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) coloured (b) brighter (c) bigger (d) smaller
  27. 27.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a straight stick (c) a balloon (d) chalk to mark shadows
  28. 28.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is kept the same. (a) False (b) True
  29. 29.True or false: oily paper is translucent. (a) False (b) True
  30. 30.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is the one thing we change. (a) False (b) True
  31. 31.🧺 Do we need a battery cell for the shadow clock? (a) needed (b) not needed
  32. 32.🔍 Which is the odd one out? (a) a brick (b) air (c) your hand (d) a steel plate
  33. 33.🔦 Which of these is opaque? (a) frosted glass (b) a book (c) clear plastic film (d) clean water
  34. 34.🧺 Do we need chalk to mark shadows for the shadow clock? (a) not needed (b) needed
  35. 35.🔦 Which of these is transparent? (a) a brick (b) clear plastic film (c) your hand (d) a steel plate
  36. 36.📘 Why does a shadow form? (a) the ground is dark (b) the object is cold (c) an object blocks light (d) light bends round it
  37. 37.True or false: a magnet is needed for the shadow clock. (a) False (b) True
  38. 38.True or false: tissue paper is transparent. (a) True (b) False
  39. 39.🧺 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) a mirror
  40. 40.🧺 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) a straight stick (d) yeast

Answer key

  1. False
  2. opaque
  3. a cap or hat
  4. True
  5. a wooden board
  6. around noon
  7. needed
  8. turmeric powder
  9. not needed
  10. True
  11. True
  12. a battery cell
  13. False
  14. a clock to check
  15. shadow length
  16. needed
  17. butter paper
  18. False
  19. west
  20. look straight at the Sun
  21. True
  22. a wooden board
  23. telling the time
  24. the same spot
  25. the time of day
  26. bigger
  27. a balloon
  28. False
  29. True
  30. False
  31. not needed
  32. air
  33. a book
  34. needed
  35. clear plastic film
  36. an object blocks light
  37. False
  38. False
  39. a mirror
  40. yeast

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