Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 886 · 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? What do we do with “the time of day”? (a) we keep it the same (b) we measure it (c) we change it
2. 2.🧺 Which of these is not needed for the shadow clock? (a) a mirror (b) a straight stick (c) a sunny open place (d) a clock to check
3. 3.🌞 When is a stick’s shadow the shortest? (a) around noon (b) at night (c) early morning (d) late evening
4. 4.🔦 Which of these is opaque? (a) butter paper (b) clean water (c) a book (d) air
5. 5.🛟 What should you wear for a long time in the hot sun? (a) a raincoat (b) nothing on your head (c) a woollen sweater (d) a cap or hat
6. 6.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a straight stick (c) turmeric powder (d) a sunny open place
7. 7.🔍 Which is the odd one out? (a) a brick (b) a steel plate (c) oily paper (d) your hand
8. 8.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same stick”? (a) we keep it the same (b) we measure it (c) we change it
9. 9.⚖️ 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
10. 10.True or false: your hand is translucent. (a) True (b) False
11. 11.🧺 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 mirror (d) a sunny open place
12. 12.🧺 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) a balloon (d) a straight stick
13. 13.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is the one thing we change. (a) False (b) True
14. 14.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) brighter (b) bigger (c) smaller (d) coloured
15. 15.⚖️ 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) the time of day (c) shadow length
16. 16.🧺 Do we need a magnet for the shadow clock? (a) not needed (b) needed
17. 17.True or false: a wooden board is transparent. (a) False (b) True
18. 18.True or false: a sunny open place is needed for the shadow clock. (a) False (b) True
19. 19.🔍 Which is the odd one out? (a) butter paper (b) a book (c) your hand (d) a steel plate
20. 20.True or false: clear plastic film is transparent. (a) True (b) False
21. 21.🧺 Do we need a straight stick for the shadow clock? (a) not needed (b) needed
22. 22.True or false: a battery cell is not needed for the shadow clock. (a) False (b) True
23. 23.🧺 Do we need turmeric powder for the shadow clock? (a) needed (b) not needed
24. 24.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) round (b) long (c) short (d) missing
25. 25.⚖️ 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) shadow length (d) the stick kept upright
26. 26.⚖️ 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) the same stick (c) shadow length
27. 27.🧺 Which of these is needed for the shadow clock? (a) a balloon (b) a mirror (c) a sunny open place (d) turmeric powder
28. 28.True or false: a sunny open place is not needed for the shadow clock. (a) True (b) False
29. 29.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the time of day is kept the same. (a) True (b) False
30. 30.True or false: yeast is not needed for the shadow clock. (a) True (b) False
31. 31.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a battery cell (c) a straight stick (d) a sunny open place
32. 32.⚖️ 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
33. 33.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) turmeric powder (b) a sunny open place (c) chalk to mark shadows (d) a straight stick
34. 34.True or false: a clock to check is needed for the shadow clock. (a) True (b) False
35. 35.🔦 Is a steel plate opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
36. 36.🔦 Is your hand opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
37. 37.🛟 While watching shadows outdoors, what must you never do? (a) wear a cap (b) look straight at the Sun (c) sit in the shade (d) mark with chalk
38. 38.🧺 Do we need a battery cell for the shadow clock? (a) needed (b) not needed
39. 39.📘 Why does a shadow form? (a) the ground is dark (b) an object blocks light (c) the object is cold (d) light bends round it
40. 40.🔮 Predict: on a fully cloudy day, the sundial ___. (a) shows two times (b) works better (c) does not work well (d) runs faster

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