Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 677 · 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 yeast for the shadow clock? (a) needed (b) not needed
2. 2.🔦 Which of these is opaque? (a) oily paper (b) a brick (c) frosted glass (d) tissue paper
3. 3.🔦 Is air opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
4. 4.🔮 Predict: on a fully cloudy day, the sundial ___. (a) runs faster (b) works better (c) shows two times (d) does not work well
5. 5.⚖️ 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
6. 6.⚖️ 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) the same stick (c) the time of day (d) the same spot
7. 7.True or false: clean water is transparent. (a) True (b) False
8. 8.🔍 Which is the odd one out? (a) a steel plate (b) a wooden board (c) a book (d) clean water
9. 9.🔍 Which is the odd one out? (a) clean water (b) a wooden board (c) clear plastic film (d) air
10. 10.🧺 Which of these is needed for the shadow clock? (a) yeast (b) a mirror (c) chalk to mark shadows (d) turmeric powder
11. 11.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the time of day is what we measure. (a) False (b) True
12. 12.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a sunny open place (c) a magnet (d) a clock to check
13. 13.🔦 Is clean water opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
14. 14.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) coloured (b) smaller (c) brighter (d) bigger
15. 15.True or false: a book is transparent. (a) False (b) True
16. 16.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) a clock to check (c) chalk to mark shadows (d) yeast
17. 17.True or false: a balloon is needed for the shadow clock. (a) False (b) True
18. 18.🛟 What should you wear for a long time in the hot sun? (a) nothing on your head (b) a woollen sweater (c) a cap or hat (d) a raincoat
19. 19.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) shadow length (b) the stick kept upright (c) the time of day (d) the same spot
20. 20.🔦 Is a wooden board opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
21. 21.🔦 Which of these is opaque? (a) clear glass (b) clean water (c) air (d) a book
22. 22.🔦 Is clear glass opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
23. 23.🔦 Is a book opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
24. 24.🔦 Which of these is translucent? (a) a steel plate (b) clear plastic film (c) tissue paper (d) air
25. 25.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) a sunny open place (c) a battery cell (d) a straight stick
26. 26.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the time of day”? (a) we keep it the same (b) we measure it (c) we change it
27. 27.🔦 Is tissue paper opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
28. 28.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a straight stick (c) turmeric powder (d) a sunny open place
29. 29.🔍 Which is the odd one out? (a) clear plastic film (b) clear glass (c) a book (d) air
30. 30.🧺 Do we need a straight stick for the shadow clock? (a) not needed (b) needed
31. 31.🔍 Which is the odd one out? (a) clear plastic film (b) tissue paper (c) oily paper (d) frosted glass
32. 32.🛟 While watching shadows outdoors, what must you never do? (a) mark with chalk (b) sit in the shade (c) look straight at the Sun (d) wear a cap
33. 33.🌞 When is a stick’s shadow the shortest? (a) at night (b) late evening (c) around noon (d) early morning
34. 34.True or false: a clock to check is not needed for the shadow clock. (a) False (b) True
35. 35.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) turmeric powder (b) chalk to mark shadows (c) a straight stick (d) a sunny open place
36. 36.🔦 Is clear plastic film opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
37. 37.⚖️ 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
38. 38.True or false: clear plastic film is opaque. (a) False (b) True
39. 39.🔦 Which of these is opaque? (a) frosted glass (b) butter paper (c) your hand (d) oily paper
40. 40.🧺 Which of these is needed for the shadow clock? (a) a magnet (b) yeast (c) a clock to check (d) a battery cell

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