Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 314 · 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: on a fully cloudy day, the sundial ___. (a) works better (b) shows two times (c) runs faster (d) does not work well
2. 2.🔍 Which is the odd one out? (a) a brick (b) a steel plate (c) a wooden board (d) air
3. 3.🔦 Which of these is opaque? (a) your hand (b) oily paper (c) tissue paper (d) frosted glass
4. 4.🔦 Is clear glass opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
5. 5.🧺 Which of these is needed for the shadow clock? (a) a straight stick (b) a battery cell (c) a magnet (d) a balloon
6. 6.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) a sunny open place (c) a mirror (d) chalk to mark shadows
7. 7.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the time of day”? (a) we keep it the same (b) we change it (c) we measure it
8. 8.🔦 Which of these is transparent? (a) butter paper (b) a steel plate (c) a wooden board (d) clear plastic film
9. 9.⚖️ 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) shadow length (d) the time of day
10. 10.🧺 Do we need a battery cell for the shadow clock? (a) needed (b) not needed
11. 11.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same spot”? (a) we measure it (b) we change it (c) we keep it the same
12. 12.🔦 Is oily paper opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
13. 13.⚖️ 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 stick kept upright (c) the same stick (d) the same spot
14. 14.🔦 Is clean water opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
15. 15.🧺 Do we need a magnet for the shadow clock? (a) needed (b) not needed
16. 16.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) short (b) missing (c) round (d) long
17. 17.🔦 Is frosted glass opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
18. 18.🛟 What should you wear for a long time in the hot sun? (a) a woollen sweater (b) nothing on your head (c) a cap or hat (d) a raincoat
19. 19.📘 Why does a shadow form? (a) the object is cold (b) light bends round it (c) the ground is dark (d) an object blocks light
20. 20.True or false: chalk to mark shadows is needed for the shadow clock. (a) False (b) True
21. 21.True or false: yeast is not needed for the shadow clock. (a) True (b) False
22. 22.True or false: clean water is opaque. (a) True (b) False
23. 23.🔦 Is a wooden board opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
24. 24.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “shadow length”? (a) we change it (b) we keep it the same (c) we measure it
25. 25.🔦 Which of these is translucent? (a) your hand (b) a wooden board (c) a book (d) frosted glass
26. 26.⚖️ 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) False (b) True
27. 27.🛟 While watching shadows outdoors, what must you never do? (a) look straight at the Sun (b) sit in the shade (c) wear a cap (d) mark with chalk
28. 28.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a clock to check (c) yeast (d) chalk to mark shadows
29. 29.🔦 Which of these is opaque? (a) clear plastic film (b) air (c) clear glass (d) a brick
30. 30.🧺 Do we need a balloon for the shadow clock? (a) not needed (b) needed
31. 31.True or false: clear glass is transparent. (a) True (b) False
32. 32.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a clock to check (c) turmeric powder (d) a straight stick
33. 33.True or false: a battery cell is not needed for the shadow clock. (a) True (b) False
34. 34.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) coloured (b) brighter (c) bigger (d) smaller
35. 35.⚖️ 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
36. 36.🌍 Why does the stick’s shadow move during the day? (a) the stick walks (b) the ground slides (c) the stick grows (d) Earth keeps spinning
37. 37.🧺 Which of these is needed for the shadow clock? (a) a magnet (b) a battery cell (c) chalk to mark shadows (d) yeast
38. 38.🔦 Is air opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
39. 39.🔦 Which of these is transparent? (a) a wooden board (b) frosted glass (c) a brick (d) clean water
40. 40.🔍 Which is the odd one out? (a) clear plastic film (b) clear glass (c) clean water (d) oily paper

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