Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 712 · 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 needed for the shadow clock? (a) turmeric powder (b) a magnet (c) chalk to mark shadows (d) a balloon
2. 2.True or false: clear plastic film is opaque. (a) False (b) True
3. 3.🔦 Which of these is opaque? (a) oily paper (b) your hand (c) tissue paper (d) frosted glass
4. 4.True or false: clean water is opaque. (a) False (b) True
5. 5.True or false: a battery cell is not needed for the shadow clock. (a) False (b) True
6. 6.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) the stick kept upright (b) the time of day (c) shadow length (d) the same stick
7. 7.🧺 Which of these is needed for the shadow clock? (a) a magnet (b) a straight stick (c) a battery cell (d) a mirror
8. 8.True or false: a magnet is needed for the shadow clock. (a) True (b) False
9. 9.🔦 Which of these is opaque? (a) a steel plate (b) butter paper (c) clear glass (d) clean water
10. 10.🔦 Is a book opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
11. 11.True or false: chalk to mark shadows is not needed for the shadow clock. (a) True (b) False
12. 12.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) a sunny open place (c) a mirror (d) a clock to check
13. 13.True or false: frosted glass is translucent. (a) True (b) False
14. 14.🔦 Which of these is transparent? (a) tissue paper (b) oily paper (c) clear glass (d) a wooden board
15. 15.🌍 Why does the stick’s shadow move during the day? (a) Earth keeps spinning (b) the stick walks (c) the ground slides (d) the stick grows
16. 16.🔦 Is butter paper opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
17. 17.⚖️ 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 change it (c) we measure it
18. 18.🔮 Predict: on a fully cloudy day, the sundial ___. (a) works better (b) runs faster (c) does not work well (d) shows two times
19. 19.True or false: a balloon is not needed for the shadow clock. (a) False (b) True
20. 20.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) bigger (b) smaller (c) brighter (d) coloured
21. 21.🛟 While watching shadows outdoors, what must you never do? (a) look straight at the Sun (b) sit in the shade (c) mark with chalk (d) wear a cap
22. 22.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the stick kept upright”? (a) we change it (b) we measure it (c) we keep it the same
23. 23.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) turmeric powder (c) chalk to mark shadows (d) a straight stick
24. 24.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is what we measure. (a) True (b) False
25. 25.🔦 Is clean water opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
26. 26.⚖️ 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
27. 27.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “shadow length”? (a) we keep it the same (b) we measure it (c) we change it
28. 28.📘 Why does a shadow form? (a) the ground is dark (b) the object is cold (c) an object blocks light (d) light bends round it
29. 29.🔦 Is clear glass opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
30. 30.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) long (b) missing (c) short (d) round
31. 31.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) east (b) north (c) west (d) up
32. 32.🔦 Which of these is translucent? (a) your hand (b) frosted glass (c) a book (d) clear glass
33. 33.🔦 Is clear plastic film opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
34. 34.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) the stick kept upright (b) the same spot (c) the same stick (d) shadow length
35. 35.🧺 Which of these is needed for the shadow clock? (a) a battery cell (b) a balloon (c) a magnet (d) a sunny open place
36. 36.🕰️ What is a sundial used for? (a) telling the time (b) weighing things (c) measuring rain (d) making rainbows
37. 37.True or false: a mirror is needed for the shadow clock. (a) True (b) False
38. 38.🧺 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 balloon (d) a clock to check
39. 39.⚖️ 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
40. 40.🌞 When is a stick’s shadow the shortest? (a) late evening (b) early morning (c) at night (d) around noon

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