Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 930 · 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.⚖️ 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 stick (b) the stick kept upright (c) the same spot (d) the time of day
2. 2.True or false: yeast is not needed for the shadow clock. (a) False (b) True
3. 3.🔮 Predict: on a fully cloudy day, the sundial ___. (a) runs faster (b) works better (c) shows two times (d) does not work well
4. 4.🌞 When is a stick’s shadow the shortest? (a) around noon (b) at night (c) late evening (d) early morning
5. 5.🧺 Which of these is needed for the shadow clock? (a) a magnet (b) a balloon (c) a straight stick (d) yeast
6. 6.True or false: butter paper is translucent. (a) False (b) True
7. 7.🔦 Is frosted glass opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
8. 8.🛟 While watching shadows outdoors, what must you never do? (a) mark with chalk (b) look straight at the Sun (c) sit in the shade (d) wear a cap
9. 9.🔍 Which is the odd one out? (a) a steel plate (b) clean water (c) your hand (d) a wooden board
10. 10.⚖️ 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
11. 11.🧺 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 straight stick (d) a balloon
12. 12.🔦 Is a brick opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
13. 13.🧺 Do we need a balloon for the shadow clock? (a) needed (b) not needed
14. 14.🧺 Do we need a mirror for the shadow clock? (a) needed (b) not needed
15. 15.⚖️ 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
16. 16.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a mirror (c) a sunny open place (d) a clock to check
17. 17.🧺 Do we need a clock to check for the shadow clock? (a) needed (b) not needed
18. 18.🔦 Is a wooden board opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
19. 19.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a sunny open place (c) chalk to mark shadows (d) a magnet
20. 20.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) a balloon (c) a sunny open place (d) a clock to check
21. 21.🛟 What should you wear for a long time in the hot sun? (a) a raincoat (b) a cap or hat (c) a woollen sweater (d) nothing on your head
22. 22.🔦 Which of these is translucent? (a) butter paper (b) clear glass (c) a wooden board (d) clean water
23. 23.True or false: a battery cell is needed for the shadow clock. (a) False (b) True
24. 24.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) yeast (c) a straight stick (d) a sunny open place
25. 25.🧺 Do we need turmeric powder for the shadow clock? (a) needed (b) not needed
26. 26.🔦 Is a steel plate opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
27. 27.⚖️ 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) True (b) False
28. 28.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) brighter (b) coloured (c) bigger (d) smaller
29. 29.🧺 Which of these is needed for the shadow clock? (a) yeast (b) a clock to check (c) a balloon (d) a magnet
30. 30.True or false: butter paper is transparent. (a) True (b) False
31. 31.True or false: chalk to mark shadows is not needed for the shadow clock. (a) True (b) False
32. 32.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the stick kept upright is kept the same. (a) False (b) True
33. 33.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) turmeric powder (b) a clock to check (c) a sunny open place (d) chalk to mark shadows
34. 34.🔦 Which of these is transparent? (a) a wooden board (b) a book (c) tissue paper (d) clean water
35. 35.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same spot”? (a) we change it (b) we measure it (c) we keep it the same
36. 36.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) a magnet (c) a sunny open place (d) chalk to mark shadows
37. 37.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) the same spot (b) the time of day (c) shadow length (d) the stick kept upright
38. 38.🔍 Which is the odd one out? (a) frosted glass (b) oily paper (c) butter paper (d) clear glass
39. 39.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the stick kept upright”? (a) we measure it (b) we keep it the same (c) we change it
40. 40.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same stick”? (a) we change it (b) we keep it the same (c) we measure it

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