Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 718 · 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) oily paper (b) frosted glass (c) butter paper (d) clear glass
2. 2.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) short (b) round (c) missing (d) long
3. 3.🔦 Which of these is opaque? (a) clean water (b) clear plastic film (c) tissue paper (d) a steel plate
4. 4.🔦 Is clear glass opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
5. 5.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a clock to check (c) a magnet (d) a sunny open place
6. 6.⚖️ 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 measure it (c) we change it
7. 7.🔦 Which of these is opaque? (a) tissue paper (b) your hand (c) clean water (d) oily paper
8. 8.🔦 Which of these is transparent? (a) tissue paper (b) oily paper (c) butter paper (d) clear plastic film
9. 9.🔍 Which is the odd one out? (a) a steel plate (b) a book (c) a brick (d) oily paper
10. 10.True or false: a balloon is needed for the shadow clock. (a) False (b) True
11. 11.🔦 Which of these is translucent? (a) a steel plate (b) clear plastic film (c) oily paper (d) a brick
12. 12.🔍 Which is the odd one out? (a) frosted glass (b) oily paper (c) butter paper (d) your hand
13. 13.True or false: tissue paper is opaque. (a) True (b) False
14. 14.🛟 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
15. 15.True or false: yeast is not needed for the shadow clock. (a) False (b) True
16. 16.🛟 What should you wear for a long time in the hot sun? (a) a woollen sweater (b) a cap or hat (c) a raincoat (d) nothing on your head
17. 17.True or false: frosted glass is opaque. (a) True (b) False
18. 18.🔮 Predict: on a fully cloudy day, the sundial ___. (a) runs faster (b) works better (c) shows two times (d) does not work well
19. 19.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is what we measure. (a) True (b) False
20. 20.🧺 Do we need a sunny open place for the shadow clock? (a) not needed (b) needed
21. 21.True or false: clean water is opaque. (a) True (b) False
22. 22.🧺 Do we need a clock to check for the shadow clock? (a) not needed (b) needed
23. 23.🌞 When is a stick’s shadow the shortest? (a) at night (b) late evening (c) around noon (d) early morning
24. 24.True or false: chalk to mark shadows is not needed for the shadow clock. (a) False (b) True
25. 25.True or false: a straight stick is needed for the shadow clock. (a) False (b) True
26. 26.🔍 Which is the odd one out? (a) tissue paper (b) oily paper (c) frosted glass (d) a wooden board
27. 27.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) a mirror (c) a clock to check (d) chalk to mark shadows
28. 28.True or false: clear plastic film is opaque. (a) False (b) True
29. 29.True or false: clear glass is opaque. (a) True (b) False
30. 30.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) coloured (b) smaller (c) brighter (d) bigger
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 stick kept upright (b) shadow length (c) the time of day (d) the same stick
32. 32.🔦 Which of these is opaque? (a) oily paper (b) butter paper (c) a brick (d) tissue paper
33. 33.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) a balloon (c) a straight stick (d) chalk to mark shadows
34. 34.🔦 Is a steel plate opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
35. 35.🔍 Which is the odd one out? (a) tissue paper (b) clear plastic film (c) oily paper (d) butter paper
36. 36.True or false: turmeric powder is needed for the shadow clock. (a) False (b) True
37. 37.🧺 Which of these is not needed for the shadow clock? (a) a battery cell (b) chalk to mark shadows (c) a straight stick (d) a clock to check
38. 38.🧺 Do we need turmeric powder for the shadow clock? (a) not needed (b) needed
39. 39.🕰️ What is a sundial used for? (a) making rainbows (b) weighing things (c) measuring rain (d) telling the time
40. 40.🧺 Which of these is needed for the shadow clock? (a) a balloon (b) a mirror (c) turmeric powder (d) a sunny open place

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