Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 22 · 40 questions

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.

1. 1.🧺 Do we need yeast for the shadow clock? (a) not needed (b) needed
2. 2.🧺 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) yeast (d) a straight stick
3. 3.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is kept the same. (a) False (b) True
4. 4.True or false: tissue paper is translucent. (a) False (b) True
5. 5.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) the stick kept upright (b) the same spot (c) shadow length (d) the time of day
6. 6.True or false: a balloon is needed for the shadow clock. (a) True (b) False
7. 7.🛟 While watching shadows outdoors, what must you never do? (a) wear a cap (b) mark with chalk (c) look straight at the Sun (d) sit in the shade
8. 8.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) coloured (b) brighter (c) bigger (d) smaller
9. 9.🔦 Is air opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
10. 10.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) turmeric powder (b) chalk to mark shadows (c) a clock to check (d) a sunny open place
11. 11.⚖️ 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
12. 12.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) short (b) missing (c) long (d) round
13. 13.🔍 Which is the odd one out? (a) clear plastic film (b) clear glass (c) clean water (d) a wooden board
14. 14.⚖️ 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
15. 15.🔍 Which is the odd one out? (a) frosted glass (b) a steel plate (c) a wooden board (d) your hand
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) a wooden board (b) frosted glass (c) air (d) clean water
18. 18.🔦 Is tissue paper opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
19. 19.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) a straight stick (c) chalk to mark shadows (d) turmeric powder
20. 20.🔦 Which of these is opaque? (a) clear glass (b) butter paper (c) clear plastic film (d) a brick
21. 21.True or false: a steel plate is opaque. (a) False (b) True
22. 22.🧺 Do we need a clock to check for the shadow clock? (a) needed (b) not needed
23. 23.🔍 Which is the odd one out? (a) a steel plate (b) clear glass (c) your hand (d) a brick
24. 24.🔦 Is oily paper opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
25. 25.🔦 Which of these is transparent? (a) butter paper (b) clean water (c) your hand (d) a brick
26. 26.⚖️ 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
27. 27.⚖️ 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) False (b) True
28. 28.🔮 Predict: on a fully cloudy day, the sundial ___. (a) runs faster (b) shows two times (c) does not work well (d) works better
29. 29.True or false: a book is opaque. (a) True (b) False
30. 30.🔦 Which of these is transparent? (a) air (b) butter paper (c) a wooden board (d) your hand
31. 31.True or false: turmeric powder is needed for the shadow clock. (a) True (b) False
32. 32.🧺 Which of these is needed for the shadow clock? (a) yeast (b) chalk to mark shadows (c) turmeric powder (d) a battery cell
33. 33.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a mirror (c) a clock to check (d) a straight stick
34. 34.⚖️ 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
35. 35.True or false: butter paper is translucent. (a) True (b) False
36. 36.⚖️ 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
37. 37.📘 Why does a shadow form? (a) the ground is dark (b) an object blocks light (c) light bends round it (d) the object is cold
38. 38.🔦 Is a wooden board opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
39. 39.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same spot”? (a) we change it (b) we keep it the same (c) we measure it
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 measure it (b) we keep it the same (c) we change it

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