Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 625 · 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 clock to check for the shadow clock? (a) not needed (b) needed
2. 2.True or false: clear glass is transparent. (a) True (b) False
3. 3.🌞 When is a stick’s shadow the shortest? (a) around noon (b) late evening (c) at night (d) early morning
4. 4.🧺 Which of these is needed for the shadow clock? (a) a battery cell (b) a magnet (c) a sunny open place (d) a mirror
5. 5.True or false: clear plastic film is translucent. (a) True (b) False
6. 6.True or false: a wooden board is opaque. (a) False (b) True
7. 7.🛟 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
8. 8.True or false: chalk to mark shadows is not needed for the shadow clock. (a) True (b) False
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 measure it (b) we change it (c) we keep it the same
10. 10.🧺 Do we need turmeric powder for the shadow clock? (a) needed (b) not needed
11. 11.🔮 Predict: on a fully cloudy day, the sundial ___. (a) shows two times (b) works better (c) runs faster (d) does not work well
12. 12.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a magnet (c) a sunny open place (d) chalk to mark shadows
13. 13.📘 Why does a shadow form? (a) the ground is dark (b) light bends round it (c) the object is cold (d) an object blocks light
14. 14.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the time of day is the one thing we change. (a) False (b) True
15. 15.True or false: butter paper is transparent. (a) False (b) True
16. 16.🔍 Which is the odd one out? (a) frosted glass (b) a wooden board (c) a steel plate (d) a book
17. 17.🔍 Which is the odd one out? (a) a steel plate (b) a brick (c) a wooden board (d) clear plastic film
18. 18.True or false: frosted glass is translucent. (a) False (b) True
19. 19.🔦 Is clean water opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
20. 20.🔍 Which is the odd one out? (a) your hand (b) butter paper (c) oily paper (d) frosted glass
21. 21.True or false: a straight stick is not needed for the shadow clock. (a) False (b) True
22. 22.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a mirror (b) a sunny open place (c) a straight stick (d) a clock to check
23. 23.⚖️ 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
24. 24.⚖️ 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 measure it (c) we change it
25. 25.⚖️ 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) shadow length (c) the same stick
26. 26.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a sunny open place (c) a battery cell (d) a clock to check
27. 27.⚖️ 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 keep it the same (c) we measure it
28. 28.⚖️ 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 measure it (c) we change it
29. 29.True or false: chalk to mark shadows is needed for the shadow clock. (a) True (b) False
30. 30.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) shadow length (b) the stick kept upright (c) the time of day (d) the same stick
31. 31.True or false: yeast is not needed for the shadow clock. (a) False (b) True
32. 32.True or false: a battery cell is needed for the shadow clock. (a) True (b) False
33. 33.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) coloured (b) bigger (c) smaller (d) brighter
34. 34.⚖️ 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
35. 35.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a battery cell (c) chalk to mark shadows (d) a clock to check
36. 36.True or false: a straight stick is needed for the shadow clock. (a) True (b) False
37. 37.🔦 Is a steel plate opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
38. 38.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is kept the same. (a) True (b) False
39. 39.True or false: a steel plate is transparent. (a) True (b) False
40. 40.🧺 Which of these is needed for the shadow clock? (a) a clock to check (b) a magnet (c) a mirror (d) turmeric powder

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