Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 177 · 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? What do we do with “the time of day”? (a) we measure it (b) we change it (c) we keep it the same
2. 2.True or false: oily paper is translucent. (a) False (b) True
3. 3.True or false: air is transparent. (a) False (b) True
4. 4.🔦 Is a steel plate opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
5. 5.🔦 Is air opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
6. 6.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) up (b) north (c) west (d) east
7. 7.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) chalk to mark shadows (c) yeast (d) a straight stick
8. 8.⚖️ 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 same stick (c) the time of day (d) the same spot
9. 9.🔍 Which is the odd one out? (a) tissue paper (b) a wooden board (c) oily paper (d) frosted glass
10. 10.🔦 Is a brick opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
11. 11.🔦 Is a wooden board opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
12. 12.🔮 Predict: on a fully cloudy day, the sundial ___. (a) runs faster (b) shows two times (c) does not work well (d) works better
13. 13.True or false: clear plastic film is transparent. (a) False (b) True
14. 14.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a straight stick (c) a clock to check (d) a mirror
15. 15.⚖️ 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
16. 16.🛟 What should you wear for a long time in the hot sun? (a) a cap or hat (b) nothing on your head (c) a raincoat (d) a woollen sweater
17. 17.⚖️ 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 time of day (c) the same spot (d) the same stick
18. 18.🛟 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
19. 19.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) round (b) missing (c) long (d) short
20. 20.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a straight stick (c) a battery cell (d) a clock to check
21. 21.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) a straight stick (c) a balloon (d) a sunny open place
22. 22.🔦 Is oily paper opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
23. 23.True or false: butter paper is translucent. (a) False (b) True
24. 24.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) chalk to mark shadows (c) a sunny open place (d) turmeric powder
25. 25.🔦 Which of these is transparent? (a) a steel plate (b) a book (c) clear plastic film (d) your hand
26. 26.True or false: a steel plate is opaque. (a) True (b) False
27. 27.True or false: chalk to mark shadows is needed for the shadow clock. (a) False (b) True
28. 28.🌞 When is a stick’s shadow the shortest? (a) at night (b) late evening (c) around noon (d) early morning
29. 29.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is what we measure. (a) False (b) True
30. 30.🧺 Which of these is not needed for the shadow clock? (a) a clock to check (b) a sunny open place (c) yeast (d) chalk to mark shadows
31. 31.True or false: a straight stick is not needed for the shadow clock. (a) True (b) False
32. 32.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) bigger (b) coloured (c) brighter (d) smaller
33. 33.📘 Why does a shadow form? (a) light bends round it (b) the object is cold (c) the ground is dark (d) an object blocks light
34. 34.True or false: yeast is needed for the shadow clock. (a) True (b) False
35. 35.🕰️ What is a sundial used for? (a) measuring rain (b) making rainbows (c) weighing things (d) telling the time
36. 36.True or false: a sunny open place is not needed for the shadow clock. (a) False (b) True
37. 37.🌍 Why does the stick’s shadow move during the day? (a) Earth keeps spinning (b) the ground slides (c) the stick walks (d) the stick grows
38. 38.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a clock to check (c) a magnet (d) a sunny open place
39. 39.True or false: a book is transparent. (a) True (b) False
40. 40.🧺 Which of these is needed for the shadow clock? (a) turmeric powder (b) a mirror (c) a battery cell (d) a clock to check

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