Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 110 · 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? True or false: the same spot is kept the same. (a) False (b) True
2. 2.🔦 Which of these is opaque? (a) tissue paper (b) oily paper (c) a wooden board (d) clean water
3. 3.🔦 Which of these is transparent? (a) a brick (b) a book (c) frosted glass (d) clear plastic film
4. 4.🧺 Do we need a mirror for the shadow clock? (a) not needed (b) needed
5. 5.⚖️ 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
6. 6.🛟 What should you wear for a long time in the hot sun? (a) a woollen sweater (b) nothing on your head (c) a raincoat (d) a cap or hat
7. 7.🧺 Which of these is not needed for the shadow clock? (a) a mirror (b) chalk to mark shadows (c) a sunny open place (d) a clock to check
8. 8.⚖️ 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 change it (c) we keep it the same
9. 9.🔦 Is frosted glass opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
10. 10.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) brighter (b) smaller (c) bigger (d) coloured
11. 11.🔍 Which is the odd one out? (a) frosted glass (b) a book (c) a brick (d) a wooden board
12. 12.🔦 Which of these is opaque? (a) oily paper (b) butter paper (c) frosted glass (d) your hand
13. 13.True or false: a clock to check is not needed for the shadow clock. (a) False (b) True
14. 14.🧺 Do we need a sunny open place for the shadow clock? (a) needed (b) not needed
15. 15.🧺 Do we need a battery cell for the shadow clock? (a) needed (b) not needed
16. 16.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) north (b) west (c) east (d) up
17. 17.🔦 Which of these is translucent? (a) clean water (b) clear plastic film (c) clear glass (d) tissue paper
18. 18.🧺 Do we need a clock to check for the shadow clock? (a) needed (b) not needed
19. 19.🧺 Which of these is needed for the shadow clock? (a) a magnet (b) a straight stick (c) a balloon (d) turmeric powder
20. 20.True or false: a sunny open place is needed for the shadow clock. (a) True (b) False
21. 21.🌞 When is a stick’s shadow the shortest? (a) late evening (b) around noon (c) at night (d) early morning
22. 22.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a sunny open place (c) chalk to mark shadows (d) a magnet
23. 23.🛟 While watching shadows outdoors, what must you never do? (a) wear a cap (b) mark with chalk (c) sit in the shade (d) look straight at the Sun
24. 24.🔮 Predict: on a fully cloudy day, the sundial ___. (a) does not work well (b) shows two times (c) works better (d) runs faster
25. 25.🔦 Which of these is opaque? (a) clean water (b) air (c) a book (d) butter paper
26. 26.🕰️ What is a sundial used for? (a) making rainbows (b) weighing things (c) telling the time (d) measuring rain
27. 27.🧺 Which of these is needed for the shadow clock? (a) turmeric powder (b) yeast (c) a balloon (d) chalk to mark shadows
28. 28.True or false: your hand is transparent. (a) True (b) False
29. 29.🧺 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 straight stick (d) a battery cell
30. 30.True or false: chalk to mark shadows is needed for the shadow clock. (a) False (b) True
31. 31.🔦 Is a steel plate opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
32. 32.⚖️ 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
33. 33.True or false: turmeric powder is not needed for the shadow clock. (a) True (b) False
34. 34.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) a clock to check (c) a balloon (d) a sunny open place
35. 35.⚖️ 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) shadow length (c) the time of day (d) the stick kept upright
36. 36.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a straight stick (c) yeast (d) a sunny open place
37. 37.🧺 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 mirror (d) a straight stick
38. 38.🌍 Why does the stick’s shadow move during the day? (a) Earth keeps spinning (b) the stick walks (c) the stick grows (d) the ground slides
39. 39.🔦 Is clean water opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
40. 40.⚖️ 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

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