Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 837 · 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.🧺 Do we need a balloon for the shadow clock? (a) needed (b) not needed
2. 2.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) short (b) missing (c) long (d) round
3. 3.🧺 Do we need a clock to check for the shadow clock? (a) not needed (b) needed
4. 4.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) bigger (b) brighter (c) coloured (d) smaller
5. 5.🧺 Do we need a magnet for the shadow clock? (a) needed (b) not needed
6. 6.🧺 Do we need yeast for the shadow clock? (a) needed (b) not needed
7. 7.🔍 Which is the odd one out? (a) clear plastic film (b) tissue paper (c) air (d) clean water
8. 8.🧺 Which of these is not needed for the shadow clock? (a) a clock to check (b) a mirror (c) chalk to mark shadows (d) a sunny open place
9. 9.⚖️ 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
10. 10.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a mirror (b) a straight stick (c) a sunny open place (d) chalk to mark shadows
11. 11.⚖️ 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 stick kept upright (c) the same stick (d) the time of day
12. 12.🧺 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 clock to check (d) a battery cell
13. 13.🌞 When is a stick’s shadow the shortest? (a) late evening (b) at night (c) early morning (d) around noon
14. 14.🧺 Which of these is needed for the shadow clock? (a) a magnet (b) chalk to mark shadows (c) a mirror (d) yeast
15. 15.🛟 While watching shadows outdoors, what must you never do? (a) sit in the shade (b) look straight at the Sun (c) mark with chalk (d) wear a cap
16. 16.🔮 Predict: on a fully cloudy day, the sundial ___. (a) works better (b) shows two times (c) does not work well (d) runs faster
17. 17.True or false: a straight stick is not needed for the shadow clock. (a) False (b) True
18. 18.🧺 Do we need a battery cell for the shadow clock? (a) not needed (b) needed
19. 19.🔦 Is a book opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
20. 20.🔍 Which is the odd one out? (a) clear plastic film (b) clear glass (c) a wooden board (d) clean water
21. 21.True or false: clean water is transparent. (a) False (b) True
22. 22.🔦 Which of these is translucent? (a) a book (b) frosted glass (c) a wooden board (d) air
23. 23.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same stick”? (a) we change it (b) we measure it (c) we keep it the same
24. 24.True or false: butter paper is transparent. (a) False (b) True
25. 25.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) yeast (c) a straight stick (d) a sunny open place
26. 26.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) the stick kept upright (b) the same spot (c) shadow length (d) the time of day
27. 27.🔦 Which of these is transparent? (a) frosted glass (b) a wooden board (c) butter paper (d) clean water
28. 28.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) up (b) west (c) east (d) north
29. 29.🌍 Why does the stick’s shadow move during the day? (a) Earth keeps spinning (b) the stick walks (c) the stick grows (d) the ground slides
30. 30.True or false: a battery cell is not needed for the shadow clock. (a) True (b) False
31. 31.⚖️ 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) True (b) False
32. 32.🔦 Is butter paper opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
33. 33.⚖️ 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 stick
34. 34.⚖️ 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
35. 35.🔦 Is a steel plate opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
36. 36.🧺 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 balloon (d) a clock to check
37. 37.True or false: yeast is needed for the shadow clock. (a) True (b) False
38. 38.🔦 Is clear plastic film opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
39. 39.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) yeast (c) a clock to check (d) a sunny open place
40. 40.🔍 Which is the odd one out? (a) a book (b) a steel plate (c) frosted glass (d) a brick

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