Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 669 · 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.🧺 Do we need chalk to mark shadows for the shadow clock? (a) not needed (b) needed
2. 2.📘 Why does a shadow form? (a) light bends round it (b) the ground is dark (c) the object is cold (d) an object blocks light
3. 3.⚖️ 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
4. 4.🔦 Which of these is opaque? (a) a brick (b) frosted glass (c) oily paper (d) clear plastic film
5. 5.True or false: a wooden board is opaque. (a) False (b) True
6. 6.🧺 Do we need a balloon for the shadow clock? (a) not needed (b) needed
7. 7.⚖️ 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
8. 8.🧺 Do we need a straight stick for the shadow clock? (a) needed (b) not needed
9. 9.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “shadow length”? (a) we keep it the same (b) we change it (c) we measure it
10. 10.True or false: turmeric powder is not needed for the shadow clock. (a) False (b) True
11. 11.🌍 Why does the stick’s shadow move during the day? (a) the stick walks (b) the ground slides (c) the stick grows (d) Earth keeps spinning
12. 12.🌞 When is a stick’s shadow the shortest? (a) at night (b) early morning (c) late evening (d) around noon
13. 13.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) the same stick (b) shadow length (c) the stick kept upright (d) the same spot
14. 14.True or false: a balloon is needed for the shadow clock. (a) False (b) True
15. 15.🧺 Which of these is not needed for the shadow clock? (a) a clock to check (b) a magnet (c) a sunny open place (d) a straight stick
16. 16.⚖️ 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
17. 17.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) round (b) missing (c) short (d) long
18. 18.⚖️ 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) shadow length (d) the time of day
19. 19.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a battery cell (c) a straight stick (d) a sunny open place
20. 20.🧺 Which of these is not needed for the shadow clock? (a) yeast (b) a straight stick (c) a sunny open place (d) chalk to mark shadows
21. 21.🔍 Which is the odd one out? (a) clear glass (b) clear plastic film (c) clean water (d) tissue paper
22. 22.⚖️ 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 time of day (c) the same stick
23. 23.⚖️ 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
24. 24.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) bigger (b) coloured (c) smaller (d) brighter
25. 25.🔦 Which of these is transparent? (a) frosted glass (b) a wooden board (c) clear plastic film (d) a brick
26. 26.True or false: a brick is translucent. (a) False (b) True
27. 27.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) north (b) up (c) east (d) west
28. 28.🧺 Which of these is needed for the shadow clock? (a) yeast (b) chalk to mark shadows (c) turmeric powder (d) a balloon
29. 29.🧺 Do we need yeast for the shadow clock? (a) needed (b) not needed
30. 30.🔍 Which is the odd one out? (a) butter paper (b) frosted glass (c) oily paper (d) a book
31. 31.True or false: tissue paper is translucent. (a) False (b) True
32. 32.True or false: clear glass is opaque. (a) True (b) False
33. 33.True or false: clean water is translucent. (a) False (b) True
34. 34.True or false: butter paper is translucent. (a) True (b) False
35. 35.⚖️ 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 time of day (c) the stick kept upright
36. 36.🔦 Is air opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
37. 37.🛟 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
38. 38.🧺 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) yeast
39. 39.🔮 Predict: on a fully cloudy day, the sundial ___. (a) works better (b) runs faster (c) does not work well (d) shows two times
40. 40.🧺 Do we need a mirror for the shadow clock? (a) needed (b) not needed

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