Shadow and Sundial Experiment Worksheet

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

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