Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 852 · 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 mirror for the shadow clock? (a) needed (b) not needed
2. 2.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the time of day”? (a) we keep it the same (b) we change it (c) we measure it
3. 3.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) short (b) long (c) missing (d) round
4. 4.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) bigger (b) coloured (c) brighter (d) smaller
5. 5.🔦 Which of these is opaque? (a) oily paper (b) clear glass (c) a steel plate (d) butter paper
6. 6.🔦 Which of these is opaque? (a) your hand (b) tissue paper (c) clear plastic film (d) frosted glass
7. 7.🧺 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
8. 8.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a balloon (b) chalk to mark shadows (c) a clock to check (d) a straight stick
9. 9.True or false: clear glass is opaque. (a) True (b) False
10. 10.True or false: a magnet is not needed for the shadow clock. (a) False (b) True
11. 11.🧺 Which of these is needed for the shadow clock? (a) a balloon (b) turmeric powder (c) chalk to mark shadows (d) a mirror
12. 12.True or false: a straight stick is not needed for the shadow clock. (a) True (b) False
13. 13.🔦 Is clear plastic film opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
14. 14.🛟 What should you wear for a long time in the hot sun? (a) a raincoat (b) nothing on your head (c) a cap or hat (d) a woollen sweater
15. 15.🔮 Predict: on a fully cloudy day, the sundial ___. (a) works better (b) runs faster (c) does not work well (d) shows two times
16. 16.🔦 Which of these is opaque? (a) a brick (b) tissue paper (c) air (d) clean water
17. 17.🔦 Is tissue paper opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
18. 18.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “shadow length”? (a) we change it (b) we measure it (c) we keep it the same
19. 19.True or false: turmeric powder is not needed for the shadow clock. (a) True (b) False
20. 20.True or false: a balloon is not needed for the shadow clock. (a) False (b) True
21. 21.🔦 Is a book opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
22. 22.🧺 Which of these is needed for the shadow clock? (a) a balloon (b) a straight stick (c) a mirror (d) yeast
23. 23.🔍 Which is the odd one out? (a) oily paper (b) butter paper (c) clear plastic film (d) frosted glass
24. 24.🧺 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 sunny open place
25. 25.🧺 Which of these is needed for the shadow clock? (a) turmeric powder (b) a balloon (c) a battery cell (d) a sunny open place
26. 26.⚖️ 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 change it (c) we measure it
27. 27.🔍 Which is the odd one out? (a) a brick (b) butter paper (c) your hand (d) a book
28. 28.⚖️ 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
29. 29.⚖️ 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
30. 30.⚖️ 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
31. 31.🛟 While watching shadows outdoors, what must you never do? (a) mark with chalk (b) look straight at the Sun (c) wear a cap (d) sit in the shade
32. 32.🔍 Which is the odd one out? (a) clean water (b) clear glass (c) a book (d) clear plastic film
33. 33.🔦 Is your hand opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
34. 34.🧺 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 battery cell (d) a straight stick
35. 35.⚖️ 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 measure it (c) we keep it the same
36. 36.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) the same spot (b) the same stick (c) shadow length (d) the stick kept upright
37. 37.🔍 Which is the odd one out? (a) oily paper (b) butter paper (c) air (d) frosted glass
38. 38.🌞 When is a stick’s shadow the shortest? (a) late evening (b) at night (c) around noon (d) early morning
39. 39.📘 Why does a shadow form? (a) an object blocks light (b) the ground is dark (c) light bends round it (d) the object is cold
40. 40.🌍 Why does the stick’s shadow move during the day? (a) the ground slides (b) the stick grows (c) the stick walks (d) Earth keeps spinning

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