Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 760 · 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 straight stick (b) chalk to mark shadows (c) a clock to check (d) a mirror
2. 2.🧺 Do we need chalk to mark shadows for the shadow clock? (a) needed (b) not needed
3. 3.⚖️ 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 keep it the same (c) we change it
4. 4.⚖️ 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 time of day (c) shadow length (d) the same stick
5. 5.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) chalk to mark shadows (c) a clock to check (d) yeast
6. 6.⚖️ 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 keep it the same (c) we change it
7. 7.🛟 While watching shadows outdoors, what must you never do? (a) sit in the shade (b) mark with chalk (c) wear a cap (d) look straight at the Sun
8. 8.🔦 Is butter paper opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
9. 9.True or false: oily paper is transparent. (a) False (b) True
10. 10.🧺 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 battery cell (d) a straight stick
11. 11.🔍 Which is the odd one out? (a) a brick (b) frosted glass (c) butter paper (d) oily paper
12. 12.⚖️ 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) True (b) False
13. 13.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) the stick kept upright (b) shadow length (c) the time of day (d) the same spot
14. 14.🧺 Which of these is needed for the shadow clock? (a) a battery cell (b) a magnet (c) a straight stick (d) yeast
15. 15.True or false: air is opaque. (a) False (b) True
16. 16.🧺 Do we need a magnet for the shadow clock? (a) not needed (b) needed
17. 17.📘 Why does a shadow form? (a) an object blocks light (b) the object is cold (c) light bends round it (d) the ground is dark
18. 18.🔍 Which is the odd one out? (a) a steel plate (b) a wooden board (c) a brick (d) clean water
19. 19.🔦 Is a wooden board opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
20. 20.🔍 Which is the odd one out? (a) oily paper (b) butter paper (c) air (d) frosted glass
21. 21.True or false: a balloon is not needed for the shadow clock. (a) True (b) False
22. 22.🔍 Which is the odd one out? (a) clear plastic film (b) frosted glass (c) tissue paper (d) butter paper
23. 23.🔦 Is tissue paper opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
24. 24.🔦 Which of these is opaque? (a) frosted glass (b) tissue paper (c) your hand (d) air
25. 25.True or false: a brick is translucent. (a) True (b) False
26. 26.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “shadow length”? (a) we measure it (b) we change it (c) we keep it the same
27. 27.🌞 When is a stick’s shadow the shortest? (a) at night (b) around noon (c) early morning (d) late evening
28. 28.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the time of day”? (a) we keep it the same (b) we change it (c) we measure it
29. 29.⚖️ 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
30. 30.True or false: air is translucent. (a) False (b) True
31. 31.🔮 Predict: on a fully cloudy day, the sundial ___. (a) shows two times (b) does not work well (c) works better (d) runs faster
32. 32.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) yeast (c) a straight stick (d) a sunny open place
33. 33.⚖️ 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
34. 34.🧺 Do we need a battery cell for the shadow clock? (a) not needed (b) needed
35. 35.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) a straight stick (c) a battery cell (d) chalk to mark shadows
36. 36.🔦 Which of these is translucent? (a) air (b) a wooden board (c) a book (d) oily paper
37. 37.🔦 Which of these is opaque? (a) butter paper (b) a book (c) oily paper (d) frosted glass
38. 38.🔦 Is a book opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
39. 39.🧺 Do we need a mirror for the shadow clock? (a) not needed (b) needed
40. 40.🔦 Is your hand opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque

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