Shadow and Sundial Experiment Worksheet

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

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