Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 565 · 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.⚖️ 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) True (b) False
2. 2.🧺 Do we need a straight stick for the shadow clock? (a) not needed (b) needed
3. 3.📘 Why does a shadow form? (a) the object is cold (b) an object blocks light (c) the ground is dark (d) light bends round it
4. 4.True or false: chalk to mark shadows is not needed for the shadow clock. (a) True (b) False
5. 5.🕰️ What is a sundial used for? (a) making rainbows (b) measuring rain (c) telling the time (d) weighing things
6. 6.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) a sunny open place (c) chalk to mark shadows (d) a mirror
7. 7.🔦 Is air opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
8. 8.🔦 Which of these is opaque? (a) air (b) butter paper (c) a brick (d) clear glass
9. 9.🔦 Which of these is transparent? (a) a steel plate (b) oily paper (c) clear plastic film (d) a brick
10. 10.🔮 Predict: on a fully cloudy day, the sundial ___. (a) does not work well (b) shows two times (c) runs faster (d) works better
11. 11.🔦 Is clear plastic film opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
12. 12.🔍 Which is the odd one out? (a) clean water (b) butter paper (c) clear glass (d) clear plastic film
13. 13.True or false: a brick is translucent. (a) True (b) False
14. 14.🧺 Do we need a battery cell for the shadow clock? (a) needed (b) not needed
15. 15.⚖️ 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 spot (c) the same stick (d) the stick kept upright
16. 16.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) short (b) missing (c) round (d) long
17. 17.True or false: a clock to check is not needed for the shadow clock. (a) False (b) True
18. 18.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the stick kept upright”? (a) we change it (b) we keep it the same (c) we measure it
19. 19.🧺 Which of these is not needed for the shadow clock? (a) a clock to check (b) a straight stick (c) a magnet (d) a sunny open place
20. 20.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) the stick kept upright (b) shadow length (c) the time of day
21. 21.🔦 Is oily paper opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
22. 22.🛟 While watching shadows outdoors, what must you never do? (a) wear a cap (b) sit in the shade (c) look straight at the Sun (d) mark with chalk
23. 23.🧺 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 clock to check (d) yeast
24. 24.True or false: a sunny open place is needed for the shadow clock. (a) False (b) True
25. 25.True or false: clear glass is transparent. (a) True (b) False
26. 26.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) a sunny open place (c) a mirror (d) chalk to mark shadows
27. 27.🔦 Which of these is opaque? (a) frosted glass (b) clear glass (c) your hand (d) oily paper
28. 28.🌞 When is a stick’s shadow the shortest? (a) at night (b) around noon (c) late evening (d) early morning
29. 29.🧺 Which of these is needed for the shadow clock? (a) a balloon (b) a mirror (c) a straight stick (d) a magnet
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 change it (b) we measure it (c) we keep it the same
31. 31.True or false: clear plastic film is transparent. (a) False (b) True
32. 32.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a sunny open place (c) chalk to mark shadows (d) a battery cell
33. 33.⚖️ 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
34. 34.🧺 Which of these is needed for the shadow clock? (a) a clock to check (b) yeast (c) a balloon (d) a magnet
35. 35.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) the same stick (b) the time of day (c) shadow length
36. 36.🔍 Which is the odd one out? (a) clear glass (b) your hand (c) clear plastic film (d) air
37. 37.🧺 Which of these is needed for the shadow clock? (a) a battery cell (b) yeast (c) chalk to mark shadows (d) a magnet
38. 38.🌍 Why does the stick’s shadow move during the day? (a) the stick grows (b) the ground slides (c) the stick walks (d) Earth keeps spinning
39. 39.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) smaller (b) coloured (c) brighter (d) bigger
40. 40.🧺 Do we need a balloon for the shadow clock? (a) not needed (b) needed

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