Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 993 · 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 straight stick for the shadow clock? (a) not needed (b) needed
2. 2.⚖️ 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) True (b) False
3. 3.⚖️ 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
4. 4.🔦 Which of these is opaque? (a) air (b) clear plastic film (c) a steel plate (d) tissue paper
5. 5.🧺 Which of these is needed for the shadow clock? (a) yeast (b) turmeric powder (c) chalk to mark shadows (d) a magnet
6. 6.🌞 When is a stick’s shadow the shortest? (a) early morning (b) around noon (c) at night (d) late evening
7. 7.⚖️ 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 same stick (c) the stick kept upright (d) shadow length
8. 8.🔦 Is clean water opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
9. 9.🧺 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) turmeric powder
10. 10.🔍 Which is the odd one out? (a) oily paper (b) frosted glass (c) a wooden board (d) butter paper
11. 11.🔍 Which is the odd one out? (a) butter paper (b) a steel plate (c) a wooden board (d) a brick
12. 12.🧺 Which of these is needed for the shadow clock? (a) turmeric powder (b) a balloon (c) a straight stick (d) yeast
13. 13.🔦 Is a wooden board opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
14. 14.🛟 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
15. 15.🔍 Which is the odd one out? (a) frosted glass (b) a steel plate (c) a brick (d) your hand
16. 16.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is what we measure. (a) True (b) False
17. 17.🧺 Do we need a balloon for the shadow clock? (a) not needed (b) needed
18. 18.🧺 Do we need chalk to mark shadows for the shadow clock? (a) not needed (b) needed
19. 19.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same stick”? (a) we measure it (b) we change it (c) we keep it the same
20. 20.🔦 Is clear glass opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
21. 21.⚖️ 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
22. 22.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is the one thing we change. (a) True (b) False
23. 23.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) smaller (b) coloured (c) bigger (d) brighter
24. 24.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a magnet (b) chalk to mark shadows (c) a sunny open place (d) a straight stick
25. 25.🛟 While watching shadows outdoors, what must you never do? (a) mark with chalk (b) wear a cap (c) sit in the shade (d) look straight at the Sun
26. 26.🔦 Is a book opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
27. 27.🔍 Which is the odd one out? (a) clean water (b) clear glass (c) your hand (d) air
28. 28.True or false: a straight stick is needed for the shadow clock. (a) False (b) True
29. 29.🔦 Which of these is opaque? (a) clear plastic film (b) a wooden board (c) frosted glass (d) clear glass
30. 30.🧺 Which of these is needed for the shadow clock? (a) yeast (b) a magnet (c) a clock to check (d) a balloon
31. 31.True or false: clean water is transparent. (a) True (b) False
32. 32.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) up (b) west (c) north (d) east
33. 33.🧺 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 straight stick (d) yeast
34. 34.True or false: a straight stick 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) a balloon (b) chalk to mark shadows (c) a clock to check (d) a sunny open place
36. 36.🔍 Which is the odd one out? (a) your hand (b) clear glass (c) a brick (d) a book
37. 37.True or false: frosted glass is opaque. (a) False (b) True
38. 38.🔮 Predict: on a fully cloudy day, the sundial ___. (a) works better (b) runs faster (c) does not work well (d) shows two times
39. 39.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is kept the same. (a) False (b) True
40. 40.🔍 Which is the odd one out? (a) clean water (b) clear glass (c) clear plastic film (d) tissue paper

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