Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 431 · 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.🔦 Is air opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
2. 2.⚖️ 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
3. 3.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) short (b) round (c) long (d) missing
4. 4.🔦 Which of these is opaque? (a) clear glass (b) a brick (c) oily paper (d) clean water
5. 5.🌞 When is a stick’s shadow the shortest? (a) around noon (b) late evening (c) early morning (d) at night
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 same spot (b) the time of day (c) the same stick (d) shadow length
7. 7.⚖️ 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 change it (c) we measure it
8. 8.🧺 Which of these is needed for the shadow clock? (a) a balloon (b) a magnet (c) a mirror (d) chalk to mark shadows
9. 9.True or false: a book is transparent. (a) False (b) True
10. 10.🛟 While watching shadows outdoors, what must you never do? (a) mark with chalk (b) sit in the shade (c) look straight at the Sun (d) wear a cap
11. 11.🔦 Is your hand opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
12. 12.🧺 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 sunny open place (d) a magnet
13. 13.True or false: a sunny open place is not needed for the shadow clock. (a) False (b) True
14. 14.🌍 Why does the stick’s shadow move during the day? (a) the ground slides (b) the stick grows (c) Earth keeps spinning (d) the stick walks
15. 15.⚖️ 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 measure it (c) we change it
16. 16.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a clock to check (c) a sunny open place (d) a balloon
17. 17.🔦 Is butter paper opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
18. 18.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) north (b) west (c) east (d) up
19. 19.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a clock to check (c) yeast (d) chalk to mark shadows
20. 20.🔦 Is a book opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
21. 21.🔍 Which is the odd one out? (a) a book (b) a brick (c) your hand (d) frosted glass
22. 22.True or false: a balloon is needed for the shadow clock. (a) True (b) False
23. 23.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) bigger (b) coloured (c) smaller (d) brighter
24. 24.🧺 Do we need a balloon for the shadow clock? (a) not needed (b) needed
25. 25.🔮 Predict: on a fully cloudy day, the sundial ___. (a) runs faster (b) does not work well (c) works better (d) shows two times
26. 26.🧺 Which of these is needed for the shadow clock? (a) a battery cell (b) a straight stick (c) yeast (d) a magnet
27. 27.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) yeast (c) a clock to check (d) a straight stick
28. 28.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) chalk to mark shadows (c) a mirror (d) a sunny open place
29. 29.True or false: tissue paper is transparent. (a) False (b) True
30. 30.🧺 Do we need a magnet for the shadow clock? (a) not needed (b) needed
31. 31.🔍 Which is the odd one out? (a) clear plastic film (b) air (c) clean water (d) a book
32. 32.🔍 Which is the odd one out? (a) a steel plate (b) your hand (c) butter paper (d) a book
33. 33.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is what we measure. (a) False (b) True
34. 34.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the stick kept upright”? (a) we keep it the same (b) we change it (c) we measure it
35. 35.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the time of day is what we measure. (a) False (b) True
36. 36.🧺 Do we need a mirror for the shadow clock? (a) needed (b) not needed
37. 37.⚖️ 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
38. 38.🧺 Do we need chalk to mark shadows for the shadow clock? (a) needed (b) not needed
39. 39.🧺 Do we need a clock to check for the shadow clock? (a) needed (b) not needed
40. 40.⚖️ 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

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