Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 722 · 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.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) a mirror (c) a straight stick (d) a sunny open place
2. 2.🧺 Which of these is needed for the shadow clock? (a) turmeric powder (b) a magnet (c) yeast (d) a clock to check
3. 3.⚖️ 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) False (b) True
4. 4.🧺 Which of these is needed for the shadow clock? (a) yeast (b) a balloon (c) a straight stick (d) a battery cell
5. 5.🧺 Do we need a mirror for the shadow clock? (a) not needed (b) needed
6. 6.🔮 Predict: on a fully cloudy day, the sundial ___. (a) works better (b) shows two times (c) runs faster (d) does not work well
7. 7.🛟 While watching shadows outdoors, what must you never do? (a) look straight at the Sun (b) wear a cap (c) sit in the shade (d) mark with chalk
8. 8.🧺 Which of these is needed for the shadow clock? (a) a magnet (b) a sunny open place (c) a mirror (d) a battery cell
9. 9.🔦 Is butter paper opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
10. 10.⚖️ 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
11. 11.🔍 Which is the odd one out? (a) frosted glass (b) your hand (c) a brick (d) a book
12. 12.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) smaller (b) coloured (c) bigger (d) brighter
13. 13.True or false: turmeric powder is needed for the shadow clock. (a) False (b) True
14. 14.⚖️ 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) the same stick (c) shadow length (d) the time of day
15. 15.True or false: yeast is needed for the shadow clock. (a) False (b) True
16. 16.True or false: a sunny open place is needed for the shadow clock. (a) False (b) True
17. 17.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) shadow length (b) the stick kept upright (c) the same stick (d) the time of day
18. 18.🔦 Is a book opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
19. 19.True or false: a battery cell is needed for the shadow clock. (a) False (b) True
20. 20.⚖️ 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 stick kept upright (c) shadow length
21. 21.🔦 Which of these is translucent? (a) a steel plate (b) frosted glass (c) your hand (d) a brick
22. 22.🔦 Which of these is transparent? (a) your hand (b) clean water (c) a book (d) a brick
23. 23.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is kept the same. (a) True (b) False
24. 24.🧺 Do we need chalk to mark shadows for the shadow clock? (a) not needed (b) needed
25. 25.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) a straight stick (c) a balloon (d) a sunny open place
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 is the odd one out? (a) frosted glass (b) oily paper (c) butter paper (d) clean water
28. 28.True or false: frosted glass is transparent. (a) True (b) False
29. 29.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) a magnet (c) chalk to mark shadows (d) a clock to check
30. 30.True or false: butter paper is translucent. (a) True (b) False
31. 31.True or false: a magnet is not needed for the shadow clock. (a) True (b) False
32. 32.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) yeast (b) a clock to check (c) chalk to mark shadows (d) a straight stick
33. 33.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “shadow length”? (a) we keep it the same (b) we measure it (c) we change it
34. 34.🔦 Is a brick opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
35. 35.🧺 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 magnet (d) a clock to check
36. 36.🔦 Is your hand opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
37. 37.True or false: oily paper is translucent. (a) False (b) True
38. 38.🔦 Is frosted glass opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
39. 39.📘 Why does a shadow form? (a) the object is cold (b) an object blocks light (c) light bends round it (d) the ground is dark
40. 40.🧺 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

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