Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 130 · 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.True or false: a sunny open place is not needed for the shadow clock. (a) False (b) True
2. 2.⚖️ 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
3. 3.🧺 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 straight stick (d) a battery cell
4. 4.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “shadow length”? (a) we measure it (b) we keep it the same (c) we change it
5. 5.🔍 Which is the odd one out? (a) butter paper (b) frosted glass (c) oily paper (d) a book
6. 6.🛟 While watching shadows outdoors, what must you never do? (a) mark with chalk (b) sit in the shade (c) look straight at the Sun (d) wear a cap
7. 7.⚖️ 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 keep it the same (c) we change it
8. 8.🔦 Which of these is opaque? (a) a wooden board (b) clear plastic film (c) oily paper (d) frosted glass
9. 9.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) bigger (b) brighter (c) coloured (d) smaller
10. 10.🌍 Why does the stick’s shadow move during the day? (a) the stick grows (b) the ground slides (c) the stick walks (d) Earth keeps spinning
11. 11.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a sunny open place (c) a straight stick (d) a magnet
12. 12.🧺 Which of these is not needed for the shadow clock? (a) a balloon (b) a straight stick (c) a sunny open place (d) chalk to mark shadows
13. 13.🌞 When is a stick’s shadow the shortest? (a) early morning (b) late evening (c) at night (d) around noon
14. 14.🔍 Which is the odd one out? (a) clear plastic film (b) frosted glass (c) clear glass (d) air
15. 15.⚖️ 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
16. 16.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the stick kept upright is what we measure. (a) True (b) False
17. 17.True or false: a magnet is not needed for the shadow clock. (a) False (b) True
18. 18.🧺 Do we need turmeric powder for the shadow clock? (a) needed (b) not needed
19. 19.🔦 Is clean water opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
20. 20.⚖️ 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
21. 21.⚖️ 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 stick kept upright (c) the time of day (d) the same spot
22. 22.⚖️ 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
23. 23.🔦 Is oily paper opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
24. 24.True or false: a balloon is not needed for the shadow clock. (a) False (b) True
25. 25.True or false: a straight stick is not needed for the shadow clock. (a) False (b) True
26. 26.True or false: a brick is translucent. (a) True (b) False
27. 27.🔦 Is a brick opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
28. 28.🛟 What should you wear for a long time in the hot sun? (a) a woollen sweater (b) nothing on your head (c) a cap or hat (d) a raincoat
29. 29.🔦 Is air opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
30. 30.True or false: a steel plate is opaque. (a) False (b) True
31. 31.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) a straight stick (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 time of day is kept the same. (a) True (b) False
33. 33.🔍 Which is the odd one out? (a) clean water (b) butter paper (c) tissue paper (d) oily paper
34. 34.⚖️ 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
35. 35.🔦 Which of these is translucent? (a) a wooden board (b) frosted glass (c) clear plastic film (d) a steel plate
36. 36.True or false: air is transparent. (a) False (b) True
37. 37.🕰️ What is a sundial used for? (a) measuring rain (b) making rainbows (c) weighing things (d) telling the time
38. 38.⚖️ 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
39. 39.True or false: a sunny open place is needed for the shadow clock. (a) False (b) True
40. 40.🔦 Is tissue paper opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent

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