Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 699 · 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.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a clock to check (c) a sunny open place (d) a battery cell
2. 2.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the time of day”? (a) we measure it (b) we keep it the same (c) we change it
3. 3.🔦 Is clear plastic film opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
4. 4.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a sunny open place (c) yeast (d) a clock to check
5. 5.🔮 Predict: on a fully cloudy day, the sundial ___. (a) shows two times (b) works better (c) runs faster (d) does not work well
6. 6.🧺 Do we need a straight stick for the shadow clock? (a) not needed (b) needed
7. 7.🔦 Is clear glass opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
8. 8.📘 Why does a shadow form? (a) light bends round it (b) the object is cold (c) the ground is dark (d) an object blocks light
9. 9.🌞 When is a stick’s shadow the shortest? (a) around noon (b) early morning (c) at night (d) late evening
10. 10.🔦 Which of these is translucent? (a) a book (b) a steel plate (c) tissue paper (d) your hand
11. 11.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) a clock to check (c) a sunny open place (d) yeast
12. 12.⚖️ 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 stick kept upright (c) the time of day
13. 13.True or false: chalk to mark shadows is needed for the shadow clock. (a) False (b) True
14. 14.🕰️ What is a sundial used for? (a) measuring rain (b) making rainbows (c) weighing things (d) telling the time
15. 15.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a magnet (b) a straight stick (c) a clock to check (d) a sunny open place
16. 16.True or false: a battery cell is needed for the shadow clock. (a) False (b) True
17. 17.True or false: a straight stick is not needed for the shadow clock. (a) False (b) True
18. 18.🔍 Which is the odd one out? (a) butter paper (b) clear plastic film (c) tissue paper (d) oily paper
19. 19.True or false: turmeric powder is not needed for the shadow clock. (a) True (b) False
20. 20.True or false: turmeric powder is needed for the shadow clock. (a) False (b) True
21. 21.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a battery cell (c) a straight stick (d) chalk to mark shadows
22. 22.🛟 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
23. 23.🧺 Which of these is needed for the shadow clock? (a) turmeric powder (b) a magnet (c) a balloon (d) a sunny open place
24. 24.⚖️ 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
25. 25.True or false: a mirror is needed for the shadow clock. (a) True (b) False
26. 26.🛟 While watching shadows outdoors, what must you never do? (a) look straight at the Sun (b) mark with chalk (c) sit in the shade (d) wear a cap
27. 27.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) chalk to mark shadows (c) a clock to check (d) a balloon
28. 28.🔦 Is air opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
29. 29.⚖️ 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) False (b) True
30. 30.🔦 Is clean water opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
31. 31.⚖️ 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
32. 32.True or false: a book is opaque. (a) True (b) False
33. 33.🧺 Do we need a clock to check for the shadow clock? (a) not needed (b) needed
34. 34.True or false: a straight stick is needed for the shadow clock. (a) True (b) False
35. 35.🔦 Which of these is opaque? (a) clear glass (b) a wooden board (c) oily paper (d) air
36. 36.⚖️ 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
37. 37.⚖️ 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) False (b) True
38. 38.🧺 Do we need a mirror for the shadow clock? (a) not needed (b) needed
39. 39.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a mirror (c) a clock to check (d) a straight stick
40. 40.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) smaller (b) brighter (c) coloured (d) bigger

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