Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 768 · 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 mirror is needed for the shadow clock. (a) False (b) True
2. 2.True or false: a battery cell is needed for the shadow clock. (a) False (b) True
3. 3.True or false: frosted glass is transparent. (a) True (b) False
4. 4.True or false: clear glass is transparent. (a) False (b) True
5. 5.🔦 Which of these is translucent? (a) a wooden board (b) clear plastic film (c) a brick (d) tissue paper
6. 6.True or false: a sunny open place is not needed for the shadow clock. (a) False (b) True
7. 7.True or false: a clock to check is not needed for the shadow clock. (a) False (b) True
8. 8.🔦 Is oily paper opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
9. 9.🔦 Is air opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
10. 10.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) chalk to mark shadows (c) a balloon (d) a straight stick
11. 11.True or false: a steel plate is opaque. (a) False (b) True
12. 12.🔍 Which is the odd one out? (a) clear glass (b) frosted glass (c) air (d) clean water
13. 13.⚖️ 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
14. 14.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a magnet (c) a clock to check (d) a straight stick
15. 15.🔦 Is clean water opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
16. 16.⚖️ 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
17. 17.📘 Why does a shadow form? (a) an object blocks light (b) the object is cold (c) the ground is dark (d) light bends round it
18. 18.True or false: clear plastic film is opaque. (a) True (b) False
19. 19.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same spot”? (a) we change it (b) we measure it (c) we keep it the same
20. 20.🔦 Which of these is transparent? (a) frosted glass (b) a book (c) tissue paper (d) clear glass
21. 21.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) the time of day (b) shadow length (c) the same spot (d) the same stick
22. 22.🔮 Predict: on a fully cloudy day, the sundial ___. (a) does not work well (b) runs faster (c) shows two times (d) works better
23. 23.🛟 While watching shadows outdoors, what must you never do? (a) wear a cap (b) sit in the shade (c) mark with chalk (d) look straight at the Sun
24. 24.🔦 Is your hand opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
25. 25.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) a clock to check (c) a straight stick (d) yeast
26. 26.🔦 Which of these is opaque? (a) clear glass (b) clear plastic film (c) air (d) a wooden board
27. 27.🧺 Do we need chalk to mark shadows for the shadow clock? (a) not needed (b) needed
28. 28.🧺 Do we need a balloon for the shadow clock? (a) not needed (b) needed
29. 29.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a straight stick (c) a battery cell (d) a clock to check
30. 30.🕰️ What is a sundial used for? (a) telling the time (b) weighing things (c) making rainbows (d) measuring rain
31. 31.🧺 Which of these is needed for the shadow clock? (a) a battery cell (b) turmeric powder (c) a straight stick (d) yeast
32. 32.🧺 Which of these is needed for the shadow clock? (a) a magnet (b) turmeric powder (c) a sunny open place (d) a balloon
33. 33.🧺 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 mirror (d) chalk to mark shadows
34. 34.🧺 Do we need a straight stick for the shadow clock? (a) not needed (b) needed
35. 35.🌞 When is a stick’s shadow the shortest? (a) early morning (b) around noon (c) at night (d) late evening
36. 36.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) the stick kept upright (b) the time of day (c) shadow length
37. 37.🛟 What should you wear for a long time in the hot sun? (a) a raincoat (b) a woollen sweater (c) nothing on your head (d) a cap or hat
38. 38.🔍 Which is the odd one out? (a) a wooden board (b) air (c) clean water (d) clear glass
39. 39.⚖️ 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
40. 40.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a straight stick (c) turmeric powder (d) a clock to check

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