Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 685 · 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.True or false: tissue paper is opaque. (a) True (b) False
2. 2.⚖️ 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 measure it (c) we change it
3. 3.🧺 Do we need a battery cell for the shadow clock? (a) needed (b) not needed
4. 4.🔦 Which of these is opaque? (a) clear plastic film (b) tissue paper (c) your hand (d) clean water
5. 5.🧺 Which of these is needed for the shadow clock? (a) chalk to mark shadows (b) a mirror (c) a balloon (d) a magnet
6. 6.🕰️ What is a sundial used for? (a) weighing things (b) telling the time (c) measuring rain (d) making rainbows
7. 7.🧺 Do we need a sunny open place for the shadow clock? (a) needed (b) not needed
8. 8.🔦 Which of these is opaque? (a) a steel plate (b) clear plastic film (c) butter paper (d) air
9. 9.True or false: a sunny open place is needed for the shadow clock. (a) False (b) True
10. 10.🧺 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 straight stick (d) a magnet
11. 11.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) turmeric powder (c) a straight stick (d) chalk to mark shadows
12. 12.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a clock to check (c) a battery cell (d) a sunny open place
13. 13.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) coloured (b) brighter (c) bigger (d) smaller
14. 14.🛟 While watching shadows outdoors, what must you never do? (a) sit in the shade (b) look straight at the Sun (c) wear a cap (d) mark with chalk
15. 15.🧺 Which of these is needed for the shadow clock? (a) a mirror (b) yeast (c) a magnet (d) a sunny open place
16. 16.🔦 Is clean water opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
17. 17.True or false: clear glass is transparent. (a) True (b) False
18. 18.🔍 Which is the odd one out? (a) frosted glass (b) butter paper (c) oily paper (d) a steel plate
19. 19.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) missing (b) short (c) long (d) round
20. 20.🌞 When is a stick’s shadow the shortest? (a) early morning (b) late evening (c) around noon (d) at night
21. 21.True or false: clean water is transparent. (a) True (b) False
22. 22.True or false: yeast is not needed for the shadow clock. (a) False (b) True
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 keep it the same (c) we measure it
24. 24.⚖️ 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
25. 25.⚖️ 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
26. 26.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) yeast (c) a clock to check (d) chalk to mark shadows
27. 27.🔦 Is clear glass opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
28. 28.🧺 Which of these is needed for the shadow clock? (a) yeast (b) a mirror (c) a straight stick (d) turmeric powder
29. 29.🧺 Do we need a mirror for the shadow clock? (a) needed (b) not needed
30. 30.⚖️ 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 time of day (c) the same stick (d) shadow length
31. 31.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) the stick kept upright (b) the same stick (c) the time of day (d) the same spot
32. 32.📘 Why does a shadow form? (a) light bends round it (b) the ground is dark (c) the object is cold (d) an object blocks light
33. 33.🧺 Do we need turmeric powder for the shadow clock? (a) needed (b) not needed
34. 34.🔦 Which of these is opaque? (a) tissue paper (b) a book (c) frosted glass (d) air
35. 35.🔦 Is a book opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
36. 36.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same spot”? (a) we change it (b) we keep it the same (c) we measure it
37. 37.🔦 Which of these is transparent? (a) clean water (b) a steel plate (c) your hand (d) butter paper
38. 38.🧺 Do we need a balloon for the shadow clock? (a) needed (b) not needed
39. 39.True or false: a book is opaque. (a) False (b) True
40. 40.⚖️ 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

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