Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 88 · 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: the Sun is low in the evening sky. The stick’s shadow is ___. (a) missing (b) long (c) short (d) round
2. 2.True or false: a straight stick is needed for the shadow clock. (a) False (b) True
3. 3.🛟 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
4. 4.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a clock to check (c) chalk to mark shadows (d) a balloon
5. 5.🔍 Which is the odd one out? (a) tissue paper (b) oily paper (c) butter paper (d) your hand
6. 6.🔦 Is frosted glass opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
7. 7.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) the same spot (b) the time of day (c) shadow length
8. 8.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) coloured (b) smaller (c) brighter (d) bigger
9. 9.⚖️ 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
10. 10.🔍 Which is the odd one out? (a) air (b) clear plastic film (c) clean water (d) oily paper
11. 11.🧺 Do we need a straight stick for the shadow clock? (a) needed (b) not needed
12. 12.True or false: clean water is transparent. (a) False (b) True
13. 13.🧺 Which of these is not needed for the shadow clock? (a) a clock to check (b) chalk to mark shadows (c) a balloon (d) a sunny open place
14. 14.🧺 Do we need chalk to mark shadows for the shadow clock? (a) needed (b) not needed
15. 15.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is what we measure. (a) False (b) True
16. 16.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a straight stick (c) a sunny open place (d) a magnet
17. 17.🔦 Is a wooden board opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
18. 18.🔍 Which is the odd one out? (a) air (b) a wooden board (c) clear plastic film (d) clean water
19. 19.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) turmeric powder (c) a straight stick (d) chalk to mark shadows
20. 20.🛟 What should you wear for a long time in the hot sun? (a) a raincoat (b) a cap or hat (c) nothing on your head (d) a woollen sweater
21. 21.🌞 When is a stick’s shadow the shortest? (a) late evening (b) at night (c) early morning (d) around noon
22. 22.🧺 Do we need a battery cell for the shadow clock? (a) needed (b) not needed
23. 23.🧺 Which of these is needed for the shadow clock? (a) a balloon (b) turmeric powder (c) a clock to check (d) yeast
24. 24.⚖️ 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 stick (b) the time of day (c) the stick kept upright (d) shadow length
25. 25.🔦 Which of these is translucent? (a) a brick (b) your hand (c) butter paper (d) a book
26. 26.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a magnet (c) a clock to check (d) a sunny open place
27. 27.🔮 Predict: on a fully cloudy day, the sundial ___. (a) runs faster (b) does not work well (c) shows two times (d) works better
28. 28.🔍 Which is the odd one out? (a) clear glass (b) clean water (c) tissue paper (d) air
29. 29.🧺 Which of these is needed for the shadow clock? (a) yeast (b) a straight stick (c) a magnet (d) a mirror
30. 30.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is kept the same. (a) False (b) True
31. 31.🧺 Which of these is needed for the shadow clock? (a) turmeric powder (b) a magnet (c) a mirror (d) a sunny open place
32. 32.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is what we measure. (a) False (b) True
33. 33.True or false: clear plastic film is opaque. (a) True (b) False
34. 34.🧺 Which of these is needed for the shadow clock? (a) a balloon (b) a mirror (c) chalk to mark shadows (d) turmeric powder
35. 35.📘 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
36. 36.🔦 Which of these is translucent? (a) air (b) tissue paper (c) a steel plate (d) a book
37. 37.🔦 Is clear glass opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
38. 38.True or false: tissue paper is opaque. (a) False (b) True
39. 39.True or false: a wooden board is translucent. (a) False (b) True
40. 40.⚖️ 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) False (b) True

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