Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 51 · 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.⚖️ 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
2. 2.True or false: a magnet is needed for the shadow clock. (a) False (b) True
3. 3.⚖️ 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
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 same spot (b) the time of day (c) the stick kept upright (d) shadow length
5. 5.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) round (b) missing (c) short (d) long
6. 6.⚖️ 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) the time of day (c) shadow length
7. 7.🧺 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 balloon (d) a clock to check
8. 8.True or false: a magnet is not needed for the shadow clock. (a) False (b) True
9. 9.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the stick kept upright is what we measure. (a) True (b) False
10. 10.🧺 Do we need yeast for the shadow clock? (a) not needed (b) needed
11. 11.🔍 Which is the odd one out? (a) butter paper (b) a book (c) oily paper (d) frosted glass
12. 12.⚖️ 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
13. 13.🔦 Is frosted glass opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
14. 14.🔮 Predict: on a fully cloudy day, the sundial ___. (a) works better (b) runs faster (c) shows two times (d) does not work well
15. 15.True or false: a book is opaque. (a) False (b) True
16. 16.🛟 What should you wear for a long time in the hot sun? (a) a cap or hat (b) a woollen sweater (c) a raincoat (d) nothing on your head
17. 17.⚖️ 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) shadow length (c) the same spot
18. 18.⚖️ 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 change it (c) we keep it the same
19. 19.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) smaller (b) coloured (c) bigger (d) brighter
20. 20.🔍 Which is the odd one out? (a) air (b) clean water (c) clear glass (d) a steel plate
21. 21.🧺 Which of these is needed for the shadow clock? (a) chalk to mark shadows (b) yeast (c) a battery cell (d) a magnet
22. 22.🧺 Do we need a sunny open place for the shadow clock? (a) not needed (b) needed
23. 23.🧺 Which of these is needed for the shadow clock? (a) turmeric powder (b) yeast (c) a magnet (d) a straight stick
24. 24.🔦 Is tissue paper opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
25. 25.🔍 Which is the odd one out? (a) your hand (b) clear glass (c) clean water (d) air
26. 26.True or false: oily paper is translucent. (a) False (b) True
27. 27.🧺 Do we need a mirror for the shadow clock? (a) needed (b) not needed
28. 28.⚖️ 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) True (b) False
29. 29.🧺 Do we need chalk to mark shadows for the shadow clock? (a) needed (b) not needed
30. 30.🛟 While watching shadows outdoors, what must you never do? (a) wear a cap (b) sit in the shade (c) look straight at the Sun (d) mark with chalk
31. 31.🧺 Which of these is not needed for the shadow clock? (a) yeast (b) a straight stick (c) a clock to check (d) a sunny open place
32. 32.True or false: your hand is transparent. (a) True (b) False
33. 33.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a battery cell (c) a clock to check (d) a sunny open place
34. 34.🔦 Is oily paper opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
35. 35.🧺 Do we need turmeric powder for the shadow clock? (a) not needed (b) needed
36. 36.📘 Why does a shadow form? (a) light bends round it (b) the ground is dark (c) an object blocks light (d) the object is cold
37. 37.⚖️ 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
38. 38.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a sunny open place (c) a mirror (d) a straight stick
39. 39.🔍 Which is the odd one out? (a) a book (b) your hand (c) a steel plate (d) oily paper
40. 40.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is kept the same. (a) False (b) True

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