Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 561 · 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 is the odd one out? (a) your hand (b) clear glass (c) a book (d) a wooden board
2. 2.⚖️ 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 stick (c) the time of day
3. 3.🔦 Is frosted glass opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
4. 4.True or false: a brick is opaque. (a) True (b) False
5. 5.🧺 Do we need yeast for the shadow clock? (a) needed (b) not needed
6. 6.🛟 What should you wear for a long time in the hot sun? (a) nothing on your head (b) a woollen sweater (c) a raincoat (d) a cap or hat
7. 7.True or false: a balloon is needed for the shadow clock. (a) True (b) False
8. 8.🧺 Which of these is needed for the shadow clock? (a) a mirror (b) a sunny open place (c) a balloon (d) a battery cell
9. 9.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) turmeric powder (c) a clock to check (d) a straight stick
10. 10.🔦 Is a book opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
11. 11.True or false: yeast is not needed for the shadow clock. (a) True (b) False
12. 12.True or false: chalk to mark shadows is needed for the shadow clock. (a) False (b) True
13. 13.True or false: a brick is translucent. (a) True (b) False
14. 14.True or false: a book is transparent. (a) True (b) False
15. 15.⚖️ 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
16. 16.🧺 Do we need turmeric powder for the shadow clock? (a) needed (b) not needed
17. 17.🔍 Which is the odd one out? (a) air (b) clean water (c) clear plastic film (d) a wooden board
18. 18.🧺 Do we need a sunny open place for the shadow clock? (a) not needed (b) needed
19. 19.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) a clock to check (c) a battery cell (d) a straight stick
20. 20.True or false: clean water is transparent. (a) True (b) False
21. 21.⚖️ 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 keep it the same (c) we change it
22. 22.🧺 Do we need a balloon for the shadow clock? (a) needed (b) not needed
23. 23.🔦 Is butter paper opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
24. 24.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) a balloon (c) a clock to check (d) a straight stick
25. 25.⚖️ 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 stick kept upright (c) the same stick (d) the time of day
26. 26.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) up (b) west (c) north (d) east
27. 27.🛟 While watching shadows outdoors, what must you never do? (a) mark with chalk (b) look straight at the Sun (c) wear a cap (d) sit in the shade
28. 28.🧺 Which of these is needed for the shadow clock? (a) a mirror (b) yeast (c) chalk to mark shadows (d) turmeric powder
29. 29.🔦 Is tissue paper opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
30. 30.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) bigger (b) coloured (c) smaller (d) brighter
31. 31.🔮 Predict: on a fully cloudy day, the sundial ___. (a) shows two times (b) works better (c) does not work well (d) runs faster
32. 32.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) round (b) long (c) missing (d) short
33. 33.🔍 Which is the odd one out? (a) your hand (b) a book (c) air (d) a wooden board
34. 34.🔦 Which of these is opaque? (a) butter paper (b) clean water (c) frosted glass (d) a steel plate
35. 35.True or false: a book is opaque. (a) False (b) True
36. 36.🔦 Is a brick opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
37. 37.🔦 Is your hand opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
38. 38.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a mirror (c) a clock to check (d) a sunny open place
39. 39.🔦 Is clean water opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
40. 40.🔦 Which of these is transparent? (a) a wooden board (b) butter paper (c) clear glass (d) oily paper

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