Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 812 · 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.True or false: a book is translucent. (a) True (b) False
2. 2.🔍 Which is the odd one out? (a) a book (b) a brick (c) air (d) your hand
3. 3.True or false: clean water is translucent. (a) True (b) False
4. 4.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) yeast (b) a straight stick (c) a clock to check (d) chalk to mark shadows
5. 5.🔍 Which is the odd one out? (a) clear glass (b) clean water (c) frosted glass (d) air
6. 6.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) a clock to check (c) yeast (d) chalk to mark shadows
7. 7.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) bigger (b) coloured (c) smaller (d) brighter
8. 8.🧺 Do we need a battery cell for the shadow clock? (a) not needed (b) needed
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 spot (b) shadow length (c) the time of day (d) the same stick
10. 10.True or false: clear glass is opaque. (a) False (b) True
11. 11.True or false: turmeric powder is not needed for the shadow clock. (a) False (b) True
12. 12.True or false: a battery cell is needed for the shadow clock. (a) True (b) False
13. 13.⚖️ 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
14. 14.True or false: a clock to check is needed for the shadow clock. (a) False (b) True
15. 15.🔦 Which of these is transparent? (a) a book (b) clear glass (c) tissue paper (d) your hand
16. 16.🔦 Is clean water opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
17. 17.🕰️ What is a sundial used for? (a) making rainbows (b) measuring rain (c) weighing things (d) telling the time
18. 18.🔦 Is oily paper opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
19. 19.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) the same spot (b) shadow length (c) the time of day
20. 20.⚖️ 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
21. 21.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same spot”? (a) we keep it the same (b) we change it (c) we measure it
22. 22.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the time of day is the one thing we change. (a) False (b) True
23. 23.🔦 Is a brick opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
24. 24.⚖️ 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) the same spot (d) the same stick
25. 25.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) the time of day (b) shadow length (c) the stick kept upright
26. 26.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the stick kept upright is the one thing we change. (a) True (b) False
27. 27.🔮 Predict: on a fully cloudy day, the sundial ___. (a) works better (b) shows two times (c) runs faster (d) does not work well
28. 28.🧺 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) a magnet (d) a straight stick
29. 29.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is kept the same. (a) True (b) False
30. 30.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a mirror (c) a straight stick (d) a clock to check
31. 31.🔦 Which of these is translucent? (a) a steel plate (b) tissue paper (c) clear glass (d) clean water
32. 32.⚖️ 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 keep it the same (c) we measure it
33. 33.🔦 Which of these is transparent? (a) a book (b) clear plastic film (c) a wooden board (d) a steel plate
34. 34.🛟 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
35. 35.True or false: a balloon is not needed for the shadow clock. (a) True (b) False
36. 36.True or false: a magnet is not needed for the shadow clock. (a) True (b) False
37. 37.🔦 Is tissue paper opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
38. 38.🔦 Is frosted glass opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
39. 39.🧺 Do we need chalk to mark shadows for the shadow clock? (a) needed (b) not needed
40. 40.🔦 Is clear glass opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque

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