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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 904 · 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.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is what we measure. (a) False (b) True
  2. 2.🔦 Which of these is translucent? (a) a brick (b) air (c) frosted glass (d) your hand
  3. 3.True or false: a magnet is needed for the shadow clock. (a) True (b) False
  4. 4.🔍 Which is the odd one out? (a) clean water (b) clear plastic film (c) your hand (d) clear glass
  5. 5.🔍 Which is the odd one out? (a) clean water (b) a brick (c) a wooden board (d) a steel plate
  6. 6.True or false: clean water is transparent. (a) False (b) True
  7. 7.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the stick kept upright”? (a) we change it (b) we measure it (c) we keep it the same
  8. 8.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) a clock to check (c) a sunny open place (d) a balloon
  9. 9.🛟 While watching shadows outdoors, what must you never do? (a) mark with chalk (b) sit in the shade (c) wear a cap (d) look straight at the Sun
  10. 10.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) the stick kept upright (b) shadow length (c) the time of day
  11. 11.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) a magnet (c) a sunny open place (d) chalk to mark shadows
  12. 12.🔍 Which is the odd one out? (a) air (b) tissue paper (c) clear glass (d) clear plastic film
  13. 13.🔦 Is a wooden board opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
  14. 14.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) a straight stick (c) a battery cell (d) a clock to check
  15. 15.🧺 Do we need a balloon for the shadow clock? (a) needed (b) not needed
  16. 16.🔦 Is clear plastic film opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
  17. 17.True or false: clear plastic film is transparent. (a) True (b) False
  18. 18.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a clock to check (c) a battery cell (d) a sunny open place
  19. 19.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) round (b) missing (c) long (d) short
  20. 20.🌞 When is a stick’s shadow the shortest? (a) early morning (b) around noon (c) late evening (d) at night
  21. 21.⚖️ 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) shadow length (c) the same stick (d) the same spot
  22. 22.🔦 Which of these is opaque? (a) clean water (b) your hand (c) tissue paper (d) frosted glass
  23. 23.True or false: oily paper is translucent. (a) False (b) True
  24. 24.🔦 Is tissue paper opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
  25. 25.⚖️ 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 change it (c) we keep it the same
  26. 26.🧺 Which of these is needed for the shadow clock? (a) a mirror (b) a straight stick (c) turmeric powder (d) a magnet
  27. 27.🔦 Is a brick opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
  28. 28.⚖️ 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
  29. 29.🔮 Predict: on a fully cloudy day, the sundial ___. (a) does not work well (b) runs faster (c) shows two times (d) works better
  30. 30.True or false: a straight stick is needed for the shadow clock. (a) True (b) False
  31. 31.🔦 Which of these is translucent? (a) butter paper (b) clean water (c) clear glass (d) a brick
  32. 32.🛟 What should you wear for a long time in the hot sun? (a) a cap or hat (b) a woollen sweater (c) nothing on your head (d) a raincoat
  33. 33.True or false: a steel plate is opaque. (a) True (b) False
  34. 34.True or false: a magnet is not needed for the shadow clock. (a) False (b) True
  35. 35.⚖️ 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 same stick (c) shadow length
  36. 36.🔦 Is your hand opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
  37. 37.True or false: tissue paper is transparent. (a) True (b) False
  38. 38.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) bigger (b) smaller (c) brighter (d) coloured
  39. 39.🔦 Is clear glass opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
  40. 40.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) chalk to mark shadows (c) turmeric powder (d) a sunny open place

Answer key

  1. False
  2. frosted glass
  3. False
  4. your hand
  5. clean water
  6. True
  7. we keep it the same
  8. a balloon
  9. look straight at the Sun
  10. the stick kept upright
  11. a magnet
  12. tissue paper
  13. opaque
  14. a battery cell
  15. not needed
  16. transparent
  17. True
  18. a battery cell
  19. long
  20. around noon
  21. shadow length
  22. your hand
  23. True
  24. translucent
  25. we keep it the same
  26. a straight stick
  27. opaque
  28. True
  29. does not work well
  30. True
  31. butter paper
  32. a cap or hat
  33. True
  34. True
  35. the same stick
  36. opaque
  37. False
  38. bigger
  39. transparent
  40. turmeric powder

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