Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 630 · 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: you move a torch closer to your hand. The shadow on the wall gets ___. (a) smaller (b) coloured (c) brighter (d) bigger
2. 2.🧺 Do we need a straight stick for the shadow clock? (a) not needed (b) needed
3. 3.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is kept the same. (a) False (b) True
4. 4.🔦 Which of these is translucent? (a) a steel plate (b) oily paper (c) a wooden board (d) air
5. 5.True or false: chalk to mark shadows is not needed for the shadow clock. (a) True (b) False
6. 6.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a sunny open place (c) a straight stick (d) a mirror
7. 7.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) missing (b) long (c) round (d) short
8. 8.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is kept the same. (a) False (b) True
9. 9.🧺 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) yeast (d) a straight stick
10. 10.🔦 Which of these is opaque? (a) clean water (b) air (c) clear glass (d) your hand
11. 11.🧺 Which of these is needed for the shadow clock? (a) a balloon (b) chalk to mark shadows (c) a magnet (d) a mirror
12. 12.🔮 Predict: on a fully cloudy day, the sundial ___. (a) shows two times (b) works better (c) runs faster (d) does not work well
13. 13.🧺 Do we need a battery cell for the shadow clock? (a) not needed (b) needed
14. 14.🧺 Do we need chalk to mark shadows for the shadow clock? (a) not needed (b) needed
15. 15.🧺 Which of these is not needed for the shadow clock? (a) a balloon (b) a clock to check (c) a straight stick (d) chalk to mark shadows
16. 16.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the stick kept upright is kept the same. (a) False (b) True
17. 17.⚖️ 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) shadow length (c) the same spot (d) the same stick
18. 18.🔍 Which is the odd one out? (a) tissue paper (b) air (c) frosted glass (d) oily paper
19. 19.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) a magnet (c) chalk to mark shadows (d) a straight stick
20. 20.🕰️ What is a sundial used for? (a) telling the time (b) making rainbows (c) weighing things (d) measuring rain
21. 21.True or false: a battery cell is not needed for the shadow clock. (a) False (b) True
22. 22.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) the time of day (b) the same stick (c) the stick kept upright (d) shadow length
23. 23.🛟 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
24. 24.🔦 Is clean water opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
25. 25.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) chalk to mark shadows (c) a mirror (d) a straight stick
26. 26.📘 Why does a shadow form? (a) an object blocks light (b) the object is cold (c) light bends round it (d) the ground is dark
27. 27.⚖️ 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
28. 28.⚖️ 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) False (b) True
29. 29.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) up (b) east (c) west (d) north
30. 30.⚖️ 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 keep it the same (c) we change it
31. 31.True or false: your hand is transparent. (a) True (b) False
32. 32.🔦 Which of these is translucent? (a) air (b) tissue paper (c) your hand (d) a book
33. 33.🔦 Is oily paper opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
34. 34.🌞 When is a stick’s shadow the shortest? (a) early morning (b) at night (c) late evening (d) around noon
35. 35.⚖️ 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
36. 36.🧺 Which of these is needed for the shadow clock? (a) a magnet (b) a straight stick (c) yeast (d) a battery cell
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 stick
38. 38.🔦 Which of these is transparent? (a) butter paper (b) clean water (c) your hand (d) frosted glass
39. 39.🧺 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 sunny open place (d) a battery cell
40. 40.True or false: a balloon is not needed for the shadow clock. (a) False (b) True

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