Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 721 · 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 needed for the shadow clock? (a) a battery cell (b) a mirror (c) a balloon (d) a clock to check
2. 2.📘 Why does a shadow form? (a) the ground is dark (b) light bends round it (c) the object is cold (d) an object blocks light
3. 3.🔍 Which is the odd one out? (a) butter paper (b) frosted glass (c) a wooden board (d) oily paper
4. 4.🧺 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
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.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is what we measure. (a) True (b) False
7. 7.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) long (b) missing (c) round (d) short
8. 8.🔦 Is a steel plate opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
9. 9.🔦 Is a wooden board opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
10. 10.⚖️ 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) the time of day (c) shadow length
11. 11.🕰️ What is a sundial used for? (a) weighing things (b) making rainbows (c) measuring rain (d) telling the time
12. 12.⚖️ 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 time of day (c) shadow length (d) the same spot
13. 13.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) a clock to check (c) a mirror (d) a straight stick
14. 14.True or false: butter paper is opaque. (a) False (b) True
15. 15.🛟 While watching shadows outdoors, what must you never do? (a) sit in the shade (b) wear a cap (c) mark with chalk (d) look straight at the Sun
16. 16.🧺 Do we need a mirror for the shadow clock? (a) not needed (b) needed
17. 17.True or false: clear plastic film is transparent. (a) False (b) True
18. 18.🔍 Which is the odd one out? (a) clear plastic film (b) butter paper (c) frosted glass (d) tissue paper
19. 19.⚖️ 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 keep it the same (c) we change it
20. 20.🧺 Which of these is not needed for the shadow clock? (a) a balloon (b) a straight stick (c) chalk to mark shadows (d) a sunny open place
21. 21.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) yeast (c) a straight stick (d) chalk to mark shadows
22. 22.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a battery cell (b) chalk to mark shadows (c) a straight stick (d) a sunny open place
23. 23.🔦 Is clear glass opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
24. 24.🧺 Do we need a magnet for the shadow clock? (a) needed (b) not needed
25. 25.🛟 What should you wear for a long time in the hot sun? (a) nothing on your head (b) a raincoat (c) a cap or hat (d) a woollen sweater
26. 26.True or false: a sunny open place is needed for the shadow clock. (a) False (b) True
27. 27.🧺 Which of these is needed for the shadow clock? (a) yeast (b) chalk to mark shadows (c) a mirror (d) turmeric powder
28. 28.🧺 Do we need a clock to check for the shadow clock? (a) needed (b) not needed
29. 29.⚖️ 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
30. 30.True or false: clear glass is transparent. (a) True (b) False
31. 31.🧺 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 magnet (d) a sunny open place
32. 32.True or false: tissue paper is translucent. (a) True (b) False
33. 33.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the time of day”? (a) we change it (b) we measure it (c) we keep it the same
34. 34.🔦 Is clean water opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
35. 35.🧺 Do we need a sunny open place for the shadow clock? (a) not needed (b) needed
36. 36.True or false: a battery cell is not needed for the shadow clock. (a) True (b) False
37. 37.🔦 Which of these is opaque? (a) a steel plate (b) oily paper (c) butter paper (d) clear glass
38. 38.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a straight stick (c) turmeric powder (d) a sunny open place
39. 39.🌍 Why does the stick’s shadow move during the day? (a) the stick walks (b) the stick grows (c) the ground slides (d) Earth keeps spinning
40. 40.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is kept the same. (a) False (b) True

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