Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 217 · 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.🧺 Do we need a magnet for the shadow clock? (a) not needed (b) needed
2. 2.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) coloured (b) smaller (c) brighter (d) bigger
3. 3.🔦 Is your hand opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
4. 4.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) turmeric powder (b) chalk to mark shadows (c) a clock to check (d) a sunny open place
5. 5.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the time of day”? (a) we change it (b) we keep it the same (c) we measure it
6. 6.True or false: your hand is transparent. (a) False (b) True
7. 7.⚖️ 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 stick
8. 8.🛟 What should you wear for a long time in the hot sun? (a) a cap or hat (b) a raincoat (c) a woollen sweater (d) nothing on your head
9. 9.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a clock to check (c) a sunny open place (d) a magnet
10. 10.🧺 Do we need turmeric powder for the shadow clock? (a) needed (b) not needed
11. 11.🔮 Predict: on a fully cloudy day, the sundial ___. (a) does not work well (b) works better (c) shows two times (d) runs faster
12. 12.🌞 When is a stick’s shadow the shortest? (a) around noon (b) late evening (c) at night (d) early morning
13. 13.🧺 Which of these is needed for the shadow clock? (a) turmeric powder (b) a battery cell (c) a clock to check (d) a mirror
14. 14.🔦 Is clean water opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
15. 15.True or false: a sunny open place is needed for the shadow clock. (a) True (b) False
16. 16.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) turmeric powder (c) a sunny open place (d) a clock to check
17. 17.🔍 Which is the odd one out? (a) your hand (b) a steel plate (c) a book (d) clear glass
18. 18.True or false: oily paper is opaque. (a) True (b) False
19. 19.🧺 Which of these is needed for the shadow clock? (a) a mirror (b) chalk to mark shadows (c) turmeric powder (d) yeast
20. 20.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same stick”? (a) we keep it the same (b) we change it (c) we measure it
21. 21.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is the one thing we change. (a) False (b) True
22. 22.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) the time of day (b) the stick kept upright (c) the same stick (d) shadow length
23. 23.True or false: a balloon is needed for the shadow clock. (a) False (b) True
24. 24.🔦 Which of these is translucent? (a) clear glass (b) tissue paper (c) clean water (d) a steel plate
25. 25.🧺 Which of these is needed for the shadow clock? (a) turmeric powder (b) a balloon (c) a magnet (d) a sunny open place
26. 26.🔦 Is oily paper opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
27. 27.True or false: yeast is needed for the shadow clock. (a) True (b) False
28. 28.🧺 Do we need a balloon for the shadow clock? (a) needed (b) not needed
29. 29.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a balloon (c) a clock to check (d) a sunny open place
30. 30.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) missing (b) long (c) short (d) round
31. 31.⚖️ 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) the stick kept upright (c) the same stick (d) the same spot
32. 32.🕰️ What is a sundial used for? (a) measuring rain (b) weighing things (c) making rainbows (d) telling the time
33. 33.⚖️ 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 change it (c) we measure it
34. 34.🧺 Do we need a sunny open place for the shadow clock? (a) needed (b) not needed
35. 35.📘 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
36. 36.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “shadow length”? (a) we change it (b) we keep it the same (c) we measure it
37. 37.🛟 While watching shadows outdoors, what must you never do? (a) wear a cap (b) sit in the shade (c) mark with chalk (d) look straight at the Sun
38. 38.True or false: a mirror is needed for the shadow clock. (a) True (b) False
39. 39.True or false: chalk to mark shadows is needed for the shadow clock. (a) True (b) False
40. 40.🔦 Is a wooden board opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque

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