Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 876 · 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 magnet (b) a sunny open place (c) a mirror (d) a balloon
2. 2.🌞 When is a stick’s shadow the shortest? (a) early morning (b) around noon (c) late evening (d) at night
3. 3.⚖️ 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
4. 4.🔮 Predict: on a fully cloudy day, the sundial ___. (a) works better (b) runs faster (c) does not work well (d) shows two times
5. 5.🧺 Do we need yeast for the shadow clock? (a) not needed (b) needed
6. 6.🔍 Which is the odd one out? (a) clean water (b) a steel plate (c) air (d) clear glass
7. 7.True or false: clear glass is translucent. (a) False (b) True
8. 8.🕰️ What is a sundial used for? (a) measuring rain (b) making rainbows (c) telling the time (d) weighing things
9. 9.🛟 While watching shadows outdoors, what must you never do? (a) look straight at the Sun (b) mark with chalk (c) wear a cap (d) sit in the shade
10. 10.🧺 Do we need a clock to check for the shadow clock? (a) not needed (b) needed
11. 11.True or false: a balloon is needed for the shadow clock. (a) True (b) False
12. 12.True or false: turmeric powder is not needed for the shadow clock. (a) True (b) False
13. 13.⚖️ 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
14. 14.🧺 Do we need a mirror for the shadow clock? (a) needed (b) not needed
15. 15.True or false: a straight stick is needed for the shadow clock. (a) True (b) False
16. 16.🌍 Why does the stick’s shadow move during the day? (a) the stick walks (b) the stick grows (c) Earth keeps spinning (d) the ground slides
17. 17.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) a sunny open place (c) chalk to mark shadows (d) yeast
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 spot (b) shadow length (c) the time of day (d) the stick kept upright
19. 19.🔍 Which is the odd one out? (a) clean water (b) air (c) frosted glass (d) clear plastic film
20. 20.True or false: a wooden board is transparent. (a) False (b) True
21. 21.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the stick kept upright”? (a) we measure it (b) we keep it the same (c) we change it
22. 22.🧺 Which of these is needed for the shadow clock? (a) turmeric powder (b) yeast (c) a straight stick (d) a magnet
23. 23.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) chalk to mark shadows (c) a clock to check (d) yeast
24. 24.⚖️ 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) True (b) False
25. 25.True or false: a mirror is needed for the shadow clock. (a) True (b) False
26. 26.True or false: yeast is needed for the shadow clock. (a) True (b) False
27. 27.🔦 Is frosted glass opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
28. 28.True or false: a balloon is not needed for the shadow clock. (a) True (b) False
29. 29.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) round (b) missing (c) long (d) short
30. 30.🔦 Is oily paper opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
31. 31.⚖️ 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) shadow length (c) the time of day
32. 32.📘 Why does a shadow form? (a) the ground is dark (b) an object blocks light (c) light bends round it (d) the object is cold
33. 33.🔦 Which of these is transparent? (a) tissue paper (b) clean water (c) a brick (d) a book
34. 34.🛟 What should you wear for a long time in the hot sun? (a) nothing on your head (b) a raincoat (c) a woollen sweater (d) a cap or hat
35. 35.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) brighter (b) bigger (c) smaller (d) coloured
36. 36.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) a battery cell (c) a straight stick (d) a sunny open place
37. 37.🧺 Which of these is not needed for the shadow clock? (a) turmeric powder (b) a clock to check (c) chalk to mark shadows (d) a sunny open place
38. 38.⚖️ 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
39. 39.🧺 Which of these is needed for the shadow clock? (a) a battery cell (b) turmeric powder (c) a magnet (d) a clock to check
40. 40.True or false: clean water is translucent. (a) True (b) False

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