Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 548 · 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 not needed for the shadow clock? (a) a straight stick (b) a battery cell (c) a clock to check (d) a sunny open place
2. 2.True or false: turmeric powder is not needed for the shadow clock. (a) True (b) False
3. 3.🛟 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
4. 4.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) smaller (b) coloured (c) brighter (d) bigger
5. 5.🔦 Is a steel plate opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
6. 6.⚖️ 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 stick kept upright (c) the time of day (d) the same spot
7. 7.⚖️ 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
8. 8.🔦 Is a book opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
9. 9.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the stick kept upright is what we measure. (a) True (b) False
10. 10.🛟 What should you wear for a long time in the hot sun? (a) a woollen sweater (b) nothing on your head (c) a raincoat (d) a cap or hat
11. 11.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the time of day”? (a) we change it (b) we measure it (c) we keep it the same
12. 12.🔍 Which is the odd one out? (a) frosted glass (b) a book (c) a brick (d) a wooden board
13. 13.🌞 When is a stick’s shadow the shortest? (a) around noon (b) early morning (c) at night (d) late evening
14. 14.True or false: a straight stick is needed for the shadow clock. (a) True (b) False
15. 15.True or false: a steel plate is transparent. (a) True (b) False
16. 16.True or false: chalk to mark shadows is not needed for the shadow clock. (a) True (b) False
17. 17.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a clock to check (c) a balloon (d) a sunny open place
18. 18.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a sunny open place (c) a straight stick (d) a mirror
19. 19.🔦 Which of these is translucent? (a) a brick (b) a steel plate (c) your hand (d) butter paper
20. 20.True or false: yeast is not needed for the shadow clock. (a) False (b) True
21. 21.True or false: clear glass is translucent. (a) False (b) True
22. 22.🧺 Which of these is needed for the shadow clock? (a) a battery cell (b) a magnet (c) a clock to check (d) a balloon
23. 23.🔍 Which is the odd one out? (a) a book (b) a steel plate (c) a brick (d) butter paper
24. 24.⚖️ 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
25. 25.True or false: a straight stick is not needed for the shadow clock. (a) False (b) True
26. 26.📘 Why does a shadow form? (a) light bends round it (b) the ground is dark (c) an object blocks light (d) the object is cold
27. 27.⚖️ 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 change it (c) we keep it the same
28. 28.🔮 Predict: on a fully cloudy day, the sundial ___. (a) runs faster (b) shows two times (c) works better (d) does not work well
29. 29.True or false: a brick is opaque. (a) True (b) False
30. 30.🧺 Do we need yeast for the shadow clock? (a) not needed (b) needed
31. 31.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a magnet (b) chalk to mark shadows (c) a clock to check (d) a straight stick
32. 32.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) turmeric powder (c) chalk to mark shadows (d) a sunny open place
33. 33.🔍 Which is the odd one out? (a) butter paper (b) tissue paper (c) a brick (d) oily paper
34. 34.🧺 Which of these is needed for the shadow clock? (a) a mirror (b) a magnet (c) a battery cell (d) a straight stick
35. 35.⚖️ 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 keep it the same (c) we change it
36. 36.🔍 Which is the odd one out? (a) a steel plate (b) a book (c) a brick (d) clean water
37. 37.True or false: a balloon is not needed for the shadow clock. (a) False (b) True
38. 38.🧺 Do we need a sunny open place for the shadow clock? (a) not needed (b) needed
39. 39.True or false: a battery cell is needed for the shadow clock. (a) False (b) True
40. 40.🌍 Why does the stick’s shadow move during the day? (a) the stick grows (b) Earth keeps spinning (c) the ground slides (d) the stick walks

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