Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 642 · 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 of these is not needed for the shadow clock? (a) a sunny open place (b) a clock to check (c) chalk to mark shadows (d) turmeric powder
2. 2.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a clock to check (c) a sunny open place (d) yeast
3. 3.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a straight stick (c) a battery cell (d) a clock to check
4. 4.⚖️ 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 stick
5. 5.📘 Why does a shadow form? (a) light bends round it (b) the ground is dark (c) the object is cold (d) an object blocks light
6. 6.True or false: tissue paper is opaque. (a) True (b) False
7. 7.🧺 Do we need a battery cell for the shadow clock? (a) needed (b) not needed
8. 8.🧺 Do we need turmeric powder for the shadow clock? (a) not needed (b) needed
9. 9.⚖️ 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 spot (b) shadow length (c) the same stick (d) the time of day
10. 10.🔦 Is a steel plate opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
11. 11.🔦 Which of these is transparent? (a) tissue paper (b) frosted glass (c) clear glass (d) a brick
12. 12.True or false: your hand is opaque. (a) False (b) True
13. 13.🛟 While watching shadows outdoors, what must you never do? (a) sit in the shade (b) wear a cap (c) look straight at the Sun (d) mark with chalk
14. 14.🔦 Which of these is opaque? (a) frosted glass (b) a steel plate (c) tissue paper (d) oily paper
15. 15.🔦 Which of these is opaque? (a) a book (b) clean water (c) tissue paper (d) oily paper
16. 16.🔍 Which is the odd one out? (a) clean water (b) butter paper (c) air (d) clear plastic film
17. 17.🔦 Is air opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
18. 18.🔍 Which is the odd one out? (a) oily paper (b) butter paper (c) frosted glass (d) clear plastic film
19. 19.True or false: a straight stick is needed for the shadow clock. (a) False (b) True
20. 20.🛟 What should you wear for a long time in the hot sun? (a) a woollen sweater (b) a cap or hat (c) nothing on your head (d) a raincoat
21. 21.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a balloon (b) a sunny open place (c) a straight stick (d) chalk to mark shadows
22. 22.True or false: chalk to mark shadows is needed for the shadow clock. (a) False (b) True
23. 23.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) smaller (b) coloured (c) brighter (d) bigger
24. 24.🔮 Predict: on a fully cloudy day, the sundial ___. (a) shows two times (b) works better (c) runs faster (d) does not work well
25. 25.🧺 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
26. 26.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a clock to check (c) a mirror (d) a straight stick
27. 27.🔦 Is clean water opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
28. 28.🔦 Is a brick opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
29. 29.True or false: a book is opaque. (a) True (b) False
30. 30.🔍 Which is the odd one out? (a) tissue paper (b) your hand (c) frosted glass (d) oily paper
31. 31.🌞 When is a stick’s shadow the shortest? (a) early morning (b) at night (c) around noon (d) late evening
32. 32.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) the time of day (b) shadow length (c) the stick kept upright
33. 33.🧺 Which of these is needed for the shadow clock? (a) a balloon (b) chalk to mark shadows (c) yeast (d) a battery cell
34. 34.True or false: air is translucent. (a) False (b) True
35. 35.⚖️ 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
36. 36.🕰️ What is a sundial used for? (a) measuring rain (b) telling the time (c) making rainbows (d) weighing things
37. 37.True or false: a clock to check is not needed for the shadow clock. (a) False (b) True
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 measure it (b) we change it (c) we keep it the same
39. 39.🧺 Do we need a clock to check for the shadow clock? (a) needed (b) not needed
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 measure it (b) we keep it the same (c) we change it

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