Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 300 · 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.🔦 Is a brick opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
2. 2.True or false: air is translucent. (a) True (b) False
3. 3.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) chalk to mark shadows (c) a magnet (d) a straight stick
4. 4.🧺 Which of these is needed for the shadow clock? (a) a sunny open place (b) a battery cell (c) yeast (d) a magnet
5. 5.🧺 Do we need a magnet for the shadow clock? (a) not needed (b) needed
6. 6.🧺 Do we need a straight stick for the shadow clock? (a) not needed (b) needed
7. 7.🔍 Which is the odd one out? (a) frosted glass (b) oily paper (c) air (d) butter paper
8. 8.⚖️ 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 time of day (c) the same stick
9. 9.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) brighter (b) smaller (c) coloured (d) bigger
10. 10.🔦 Which of these is opaque? (a) oily paper (b) butter paper (c) a wooden board (d) air
11. 11.🌞 When is a stick’s shadow the shortest? (a) at night (b) around noon (c) early morning (d) late evening
12. 12.🔮 Predict: on a fully cloudy day, the sundial ___. (a) runs faster (b) works better (c) shows two times (d) does not work well
13. 13.🔦 Which of these is transparent? (a) a brick (b) a steel plate (c) air (d) tissue paper
14. 14.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) a mirror (c) chalk to mark shadows (d) a sunny open place
15. 15.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) shadow length (b) the stick kept upright (c) the same spot (d) the time of day
16. 16.🛟 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
17. 17.📘 Why does a shadow form? (a) the object is cold (b) an object blocks light (c) the ground is dark (d) light bends round it
18. 18.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) a sunny open place (c) chalk to mark shadows (d) a balloon
19. 19.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is kept the same. (a) True (b) False
20. 20.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a sunny open place (c) a balloon (d) chalk to mark shadows
21. 21.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) west (b) east (c) north (d) up
22. 22.🔦 Is butter paper opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
23. 23.True or false: yeast is needed for the shadow clock. (a) False (b) True
24. 24.⚖️ 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
25. 25.🔦 Which of these is translucent? (a) a wooden board (b) clear glass (c) a book (d) tissue paper
26. 26.🔦 Is clear glass opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
27. 27.True or false: a straight stick is not needed for the shadow clock. (a) True (b) False
28. 28.🔍 Which is the odd one out? (a) a brick (b) a steel plate (c) a wooden board (d) clean water
29. 29.⚖️ 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
30. 30.🧺 Do we need yeast for the shadow clock? (a) needed (b) not needed
31. 31.True or false: a battery cell is needed for the shadow clock. (a) False (b) True
32. 32.True or false: a sunny open place is needed for the shadow clock. (a) True (b) False
33. 33.True or false: oily paper is translucent. (a) True (b) False
34. 34.🛟 While watching shadows outdoors, what must you never do? (a) sit in the shade (b) wear a cap (c) mark with chalk (d) look straight at the Sun
35. 35.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) the same stick (b) the same spot (c) the stick kept upright (d) shadow length
36. 36.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a mirror (b) a sunny open place (c) a straight stick (d) chalk to mark shadows
37. 37.🔍 Which is the odd one out? (a) a book (b) clean water (c) clear glass (d) clear plastic film
38. 38.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the stick kept upright”? (a) we keep it the same (b) we change it (c) we measure it
39. 39.🧺 Which of these is needed for the shadow clock? (a) a balloon (b) a mirror (c) chalk to mark shadows (d) turmeric powder
40. 40.🧺 Which of these is needed for the shadow clock? (a) yeast (b) a magnet (c) a mirror (d) a straight stick

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