Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 840 · 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: the Sun is low in the evening sky. The stick’s shadow is ___. (a) short (b) round (c) long (d) missing
2. 2.⚖️ 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 same spot
3. 3.🧺 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 battery cell (d) a straight stick
4. 4.🧺 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 clock to check (d) a mirror
5. 5.True or false: turmeric powder is needed for the shadow clock. (a) False (b) True
6. 6.🌞 When is a stick’s shadow the shortest? (a) early morning (b) late evening (c) around noon (d) at night
7. 7.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) the time of day (b) the same stick (c) shadow length (d) the stick kept upright
8. 8.True or false: a clock to check is not needed for the shadow clock. (a) True (b) False
9. 9.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) smaller (b) brighter (c) bigger (d) coloured
10. 10.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a clock to check (c) chalk to mark shadows (d) a magnet
11. 11.🔦 Is frosted glass opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
12. 12.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) shadow length (b) the same spot (c) the stick kept upright (d) the time of day
13. 13.True or false: a battery cell is not needed for the shadow clock. (a) True (b) False
14. 14.True or false: a sunny open place is needed for the shadow clock. (a) False (b) True
15. 15.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a balloon (b) a clock to check (c) a sunny open place (d) chalk to mark shadows
16. 16.⚖️ 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 keep it the same (c) we change it
17. 17.True or false: butter paper is opaque. (a) True (b) False
18. 18.🔦 Is a brick opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
19. 19.True or false: frosted glass is opaque. (a) False (b) True
20. 20.🛟 While watching shadows outdoors, what must you never do? (a) wear a cap (b) look straight at the Sun (c) sit in the shade (d) mark with chalk
21. 21.True or false: a straight stick is needed for the shadow clock. (a) True (b) False
22. 22.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) east (b) west (c) north (d) up
23. 23.🔦 Is air opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
24. 24.⚖️ 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
25. 25.🧺 Which of these is needed for the shadow clock? (a) a magnet (b) a straight stick (c) turmeric powder (d) a battery cell
26. 26.True or false: a steel plate is transparent. (a) False (b) True
27. 27.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is kept the same. (a) True (b) False
28. 28.True or false: clear plastic film is translucent. (a) False (b) True
29. 29.True or false: clear glass is opaque. (a) False (b) True
30. 30.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the time of day”? (a) we measure it (b) we keep it the same (c) we change it
31. 31.🔦 Is clear plastic film opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
32. 32.🔮 Predict: on a fully cloudy day, the sundial ___. (a) runs faster (b) shows two times (c) works better (d) does not work well
33. 33.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is the one thing we change. (a) True (b) False
34. 34.⚖️ 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
35. 35.🔍 Which is the odd one out? (a) a brick (b) a book (c) frosted glass (d) your hand
36. 36.⚖️ 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
37. 37.🧺 Which of these is not needed for the shadow clock? (a) a clock to check (b) a straight stick (c) a sunny open place (d) a mirror
38. 38.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) shadow length (b) the time of day (c) the stick kept upright
39. 39.True or false: air is translucent. (a) True (b) False
40. 40.🧺 Do we need yeast for the shadow clock? (a) needed (b) not needed

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