Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 865 · 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.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) missing (b) short (c) long (d) round
2. 2.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a straight stick (c) a clock to check (d) turmeric powder
3. 3.🛟 What should you wear for a long time in the hot sun? (a) a woollen sweater (b) a raincoat (c) nothing on your head (d) a cap or hat
4. 4.True or false: yeast is needed for the shadow clock. (a) False (b) True
5. 5.🛟 While watching shadows outdoors, what must you never do? (a) mark with chalk (b) look straight at the Sun (c) wear a cap (d) sit in the shade
6. 6.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the time of day is the one thing we change. (a) False (b) True
7. 7.🧺 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
8. 8.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) brighter (b) smaller (c) bigger (d) coloured
9. 9.🔦 Which of these is transparent? (a) frosted glass (b) a brick (c) tissue paper (d) clean water
10. 10.⚖️ 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
11. 11.🧺 Do we need a straight stick for the shadow clock? (a) needed (b) not needed
12. 12.True or false: clear glass is translucent. (a) True (b) False
13. 13.🔦 Is clear glass opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
14. 14.True or false: oily paper is opaque. (a) False (b) True
15. 15.⚖️ 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
16. 16.🧺 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
17. 17.🔮 Predict: on a fully cloudy day, the sundial ___. (a) shows two times (b) runs faster (c) does not work well (d) works better
18. 18.⚖️ 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 time of day (c) shadow length (d) the same spot
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) False (b) True
20. 20.True or false: frosted glass is translucent. (a) True (b) False
21. 21.🧺 Do we need chalk to mark shadows for the shadow clock? (a) not needed (b) needed
22. 22.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) turmeric powder (b) a clock to check (c) chalk to mark shadows (d) a straight stick
23. 23.🧺 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 clock to check (d) a balloon
24. 24.True or false: oily paper is translucent. (a) False (b) True
25. 25.🔍 Which is the odd one out? (a) oily paper (b) frosted glass (c) clear glass (d) butter paper
26. 26.🕰️ What is a sundial used for? (a) making rainbows (b) measuring rain (c) weighing things (d) telling the time
27. 27.🔍 Which is the odd one out? (a) frosted glass (b) a wooden board (c) oily paper (d) butter paper
28. 28.True or false: a mirror is not needed for the shadow clock. (a) False (b) True
29. 29.🔍 Which is the odd one out? (a) a brick (b) a wooden board (c) a steel plate (d) clean water
30. 30.📘 Why does a shadow form? (a) an object blocks light (b) the ground is dark (c) the object is cold (d) light bends round it
31. 31.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the time of day is kept the same. (a) True (b) False
32. 32.True or false: a straight stick is not needed for the shadow clock. (a) True (b) False
33. 33.⚖️ 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
34. 34.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) a clock to check (c) a balloon (d) chalk to mark shadows
35. 35.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is what we measure. (a) False (b) True
36. 36.🧺 Which of these is needed for the shadow clock? (a) a straight stick (b) yeast (c) a battery cell (d) a balloon
37. 37.🧺 Which of these is needed for the shadow clock? (a) a magnet (b) a clock to check (c) yeast (d) turmeric powder
38. 38.🧺 Which of these is needed for the shadow clock? (a) a mirror (b) chalk to mark shadows (c) a battery cell (d) a magnet
39. 39.🌞 When is a stick’s shadow the shortest? (a) late evening (b) at night (c) around noon (d) early morning
40. 40.🔦 Which of these is transparent? (a) a steel plate (b) tissue paper (c) clear plastic film (d) a book

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