Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 329 · 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.🧺 Which of these is needed for the shadow clock? (a) a mirror (b) a battery cell (c) a straight stick (d) a balloon
2. 2.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) brighter (b) bigger (c) coloured (d) smaller
3. 3.True or false: a straight stick is not needed for the shadow clock. (a) False (b) True
4. 4.⚖️ 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) True (b) False
5. 5.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) missing (b) short (c) long (d) round
6. 6.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) a straight stick (c) a mirror (d) a clock to check
7. 7.True or false: yeast is not needed for the shadow clock. (a) True (b) False
8. 8.📘 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
9. 9.🧺 Which of these is needed for the shadow clock? (a) chalk to mark shadows (b) a mirror (c) a balloon (d) a battery cell
10. 10.⚖️ 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
11. 11.🧺 Which of these is needed for the shadow clock? (a) turmeric powder (b) a mirror (c) a clock to check (d) a battery cell
12. 12.🧺 Do we need a battery cell for the shadow clock? (a) needed (b) not needed
13. 13.🛟 What should you wear for a long time in the hot sun? (a) a woollen sweater (b) a raincoat (c) a cap or hat (d) nothing on your head
14. 14.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) the same spot (b) the same stick (c) shadow length (d) the time of day
15. 15.🔦 Is clear glass opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
16. 16.True or false: frosted glass is transparent. (a) False (b) True
17. 17.🧺 Do we need a mirror for the shadow clock? (a) not needed (b) needed
18. 18.🔍 Which is the odd one out? (a) a book (b) your hand (c) clear glass (d) a steel plate
19. 19.True or false: oily paper is translucent. (a) True (b) False
20. 20.🔍 Which is the odd one out? (a) butter paper (b) tissue paper (c) oily paper (d) a book
21. 21.True or false: clear glass is transparent. (a) True (b) False
22. 22.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the stick kept upright is kept the same. (a) True (b) False
23. 23.🛟 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
24. 24.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) yeast (c) a sunny open place (d) a clock to check
25. 25.🧺 Which of these is not needed for the shadow clock? (a) a magnet (b) a sunny open place (c) a clock to check (d) chalk to mark shadows
26. 26.🔦 Is your hand opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
27. 27.True or false: clean water is opaque. (a) False (b) True
28. 28.🔦 Is a brick opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
29. 29.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the time of day is kept the same. (a) True (b) False
30. 30.🔦 Is clean water opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
31. 31.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) a straight stick (c) chalk to mark shadows (d) a battery cell
32. 32.🔍 Which is the odd one out? (a) clear plastic film (b) your hand (c) a steel plate (d) a brick
33. 33.⚖️ 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 measure it (c) we keep it the same
34. 34.🔮 Predict: on a fully cloudy day, the sundial ___. (a) shows two times (b) runs faster (c) works better (d) does not work well
35. 35.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) turmeric powder (b) a sunny open place (c) a clock to check (d) chalk to mark shadows
36. 36.⚖️ 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 measure it (c) we change it
37. 37.🧺 Do we need a magnet for the shadow clock? (a) not needed (b) needed
38. 38.🧺 Which of these is not needed for the shadow clock? (a) a balloon (b) a straight stick (c) chalk to mark shadows (d) a sunny open place
39. 39.🌞 When is a stick’s shadow the shortest? (a) at night (b) around noon (c) late evening (d) early morning
40. 40.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same stick”? (a) we measure it (b) we keep it the same (c) we change it

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