Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 737 · 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 change it (b) we keep it the same (c) we measure it
2. 2.🧺 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 balloon (d) a clock to check
3. 3.🧺 Do we need a clock to check for the shadow clock? (a) not needed (b) needed
4. 4.⚖️ 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
5. 5.🛟 What should you wear for a long time in the hot sun? (a) a woollen sweater (b) a raincoat (c) nothing on your head (d) a cap or hat
6. 6.True or false: a sunny open place is needed for the shadow clock. (a) True (b) False
7. 7.⚖️ 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
8. 8.📘 Why does a shadow form? (a) the ground is dark (b) the object is cold (c) an object blocks light (d) light bends round it
9. 9.True or false: chalk to mark shadows is needed for the shadow clock. (a) False (b) True
10. 10.True or false: a straight stick is needed for the shadow clock. (a) True (b) False
11. 11.⚖️ 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
12. 12.🧺 Which of these is needed for the shadow clock? (a) a sunny open place (b) a magnet (c) a battery cell (d) a mirror
13. 13.⚖️ 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
14. 14.🔦 Is a steel plate opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
15. 15.🔦 Is clear glass opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
16. 16.True or false: your hand is opaque. (a) False (b) True
17. 17.⚖️ 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 stick kept upright
18. 18.🧺 Do we need a battery cell for the shadow clock? (a) needed (b) not needed
19. 19.🧺 Do we need yeast for the shadow clock? (a) not needed (b) needed
20. 20.⚖️ 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
21. 21.🧺 Do we need a sunny open place for the shadow clock? (a) needed (b) not needed
22. 22.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) a straight stick (c) a clock to check (d) turmeric powder
23. 23.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a magnet (b) a sunny open place (c) a clock to check (d) a straight stick
24. 24.🧺 Which of these is not needed for the shadow clock? (a) a mirror (b) a clock to check (c) a straight stick (d) chalk to mark shadows
25. 25.🛟 While watching shadows outdoors, what must you never do? (a) look straight at the Sun (b) wear a cap (c) mark with chalk (d) sit in the shade
26. 26.🧺 Do we need turmeric powder for the shadow clock? (a) not needed (b) needed
27. 27.🔍 Which is the odd one out? (a) butter paper (b) a wooden board (c) your hand (d) a book
28. 28.🔮 Predict: on a fully cloudy day, the sundial ___. (a) shows two times (b) runs faster (c) works better (d) does not work well
29. 29.True or false: frosted glass is translucent. (a) True (b) False
30. 30.🔦 Is a brick opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
31. 31.🧺 Which of these is not needed for the shadow clock? (a) a magnet (b) a clock to check (c) chalk to mark shadows (d) a straight stick
32. 32.True or false: turmeric powder is needed for the shadow clock. (a) False (b) True
33. 33.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a straight stick (c) a clock to check (d) a balloon
34. 34.True or false: a wooden board is translucent. (a) False (b) True
35. 35.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) shadow length (b) the same stick (c) the time of day
36. 36.🔦 Which of these is opaque? (a) a wooden board (b) butter paper (c) tissue paper (d) frosted glass
37. 37.🔦 Is oily paper opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
38. 38.⚖️ 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
39. 39.⚖️ 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 same spot (c) the stick kept upright (d) the time of day
40. 40.🔍 Which is the odd one out? (a) your hand (b) a brick (c) clear glass (d) a wooden board

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