Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 895 · 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 translucent? (a) air (b) a wooden board (c) clean water (d) oily paper
2. 2.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “shadow length”? (a) we measure it (b) we keep it the same (c) we change it
3. 3.🔍 Which is the odd one out? (a) a steel plate (b) tissue paper (c) butter paper (d) oily paper
4. 4.🛟 While watching shadows outdoors, what must you never do? (a) sit in the shade (b) look straight at the Sun (c) wear a cap (d) mark with chalk
5. 5.True or false: a magnet is needed for the shadow clock. (a) False (b) True
6. 6.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a mirror (c) a clock to check (d) chalk to mark shadows
7. 7.🧺 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 sunny open place
8. 8.True or false: clear glass is opaque. (a) False (b) True
9. 9.⚖️ 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
10. 10.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is the one thing we change. (a) True (b) False
11. 11.⚖️ 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 change it (c) we keep it the same
12. 12.🧺 Do we need chalk to mark shadows for the shadow clock? (a) not needed (b) needed
13. 13.🔍 Which is the odd one out? (a) a steel plate (b) your hand (c) clean water (d) a book
14. 14.True or false: chalk to mark shadows is needed for the shadow clock. (a) False (b) True
15. 15.🔮 Predict: on a fully cloudy day, the sundial ___. (a) shows two times (b) runs faster (c) works better (d) does not work well
16. 16.🧺 Do we need a battery cell for the shadow clock? (a) needed (b) not needed
17. 17.🧺 Do we need a straight stick for the shadow clock? (a) needed (b) not needed
18. 18.🔦 Is clean water opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
19. 19.True or false: clear plastic film is translucent. (a) True (b) False
20. 20.True or false: a sunny open place is needed for the shadow clock. (a) False (b) True
21. 21.📘 Why does a shadow form? (a) light bends round it (b) an object blocks light (c) the object is cold (d) the ground is dark
22. 22.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) turmeric powder (b) a sunny open place (c) chalk to mark shadows (d) a straight stick
23. 23.🌍 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
24. 24.🧺 Do we need a mirror for the shadow clock? (a) needed (b) not needed
25. 25.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a straight stick (c) yeast (d) a clock to check
26. 26.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) a sunny open place (c) a magnet (d) a clock to check
27. 27.⚖️ 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 measure it (c) we change it
28. 28.⚖️ 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
29. 29.⚖️ 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) the time of day (c) shadow length (d) the same stick
30. 30.True or false: tissue paper is translucent. (a) False (b) True
31. 31.🌞 When is a stick’s shadow the shortest? (a) early morning (b) late evening (c) around noon (d) at night
32. 32.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a sunny open place (c) chalk to mark shadows (d) a balloon
33. 33.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is the one thing we change. (a) True (b) False
34. 34.True or false: oily paper is translucent. (a) True (b) False
35. 35.🔦 Is air opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
36. 36.True or false: a straight stick is needed for the shadow clock. (a) False (b) True
37. 37.🧺 Do we need a clock to check for the shadow clock? (a) needed (b) not needed
38. 38.🔦 Is your hand opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
39. 39.🔦 Is oily paper opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
40. 40.🔦 Which of these is transparent? (a) tissue paper (b) air (c) a book (d) butter paper

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