Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 610 · 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 sunny open place (b) chalk to mark shadows (c) a straight stick (d) a magnet
2. 2.True or false: a sunny open place is not needed for the shadow clock. (a) False (b) True
3. 3.True or false: yeast is needed for the shadow clock. (a) False (b) True
4. 4.🌞 When is a stick’s shadow the shortest? (a) early morning (b) around noon (c) at night (d) late evening
5. 5.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the stick kept upright”? (a) we keep it the same (b) we measure it (c) we change it
6. 6.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) yeast (c) chalk to mark shadows (d) a straight stick
7. 7.🧺 Do we need a battery cell for the shadow clock? (a) not needed (b) needed
8. 8.🔦 Is butter paper opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
9. 9.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) a balloon (c) a clock to check (d) chalk to mark shadows
10. 10.🧺 Do we need chalk to mark shadows for the shadow clock? (a) not needed (b) needed
11. 11.🧺 Which of these is needed for the shadow clock? (a) a sunny open place (b) a mirror (c) a balloon (d) turmeric powder
12. 12.⚖️ 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 change it (c) we measure it
13. 13.⚖️ 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
14. 14.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) up (b) west (c) east (d) north
15. 15.🕰️ What is a sundial used for? (a) making rainbows (b) measuring rain (c) weighing things (d) telling the time
16. 16.True or false: a magnet is needed for the shadow clock. (a) True (b) False
17. 17.⚖️ 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
18. 18.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) round (b) short (c) long (d) missing
19. 19.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is kept the same. (a) True (b) False
20. 20.True or false: a sunny open place is needed for the shadow clock. (a) False (b) True
21. 21.📘 Why does a shadow form? (a) the ground is dark (b) the object is cold (c) light bends round it (d) an object blocks light
22. 22.🧺 Which of these is needed for the shadow clock? (a) chalk to mark shadows (b) a balloon (c) turmeric powder (d) a mirror
23. 23.⚖️ 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
24. 24.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) coloured (b) smaller (c) brighter (d) bigger
25. 25.True or false: yeast is not needed for the shadow clock. (a) True (b) False
26. 26.🔍 Which is the odd one out? (a) clear glass (b) oily paper (c) clear plastic film (d) clean water
27. 27.True or false: clean water is transparent. (a) False (b) True
28. 28.🧺 Do we need a mirror for the shadow clock? (a) needed (b) not needed
29. 29.True or false: a straight stick is needed for the shadow clock. (a) True (b) False
30. 30.⚖️ 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) False (b) True
31. 31.⚖️ 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 change it (c) we keep it the same
32. 32.🔦 Is air opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
33. 33.🔦 Is clear plastic film opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
34. 34.🛟 While watching shadows outdoors, what must you never do? (a) mark with chalk (b) wear a cap (c) look straight at the Sun (d) sit in the shade
35. 35.🔦 Is a wooden board opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
36. 36.🔦 Which of these is opaque? (a) oily paper (b) butter paper (c) a wooden board (d) frosted glass
37. 37.True or false: a battery cell is needed for the shadow clock. (a) True (b) False
38. 38.🧺 Which of these is not needed for the shadow clock? (a) a clock to check (b) a magnet (c) chalk to mark shadows (d) a sunny open place
39. 39.🔮 Predict: on a fully cloudy day, the sundial ___. (a) shows two times (b) runs faster (c) works better (d) does not work well
40. 40.⚖️ 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

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