Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 922 · 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? What do we do with “the stick kept upright”? (a) we change it (b) we measure it (c) we keep it the same
2. 2.🔦 Is air opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
3. 3.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) a straight stick (c) a balloon (d) a sunny open place
4. 4.True or false: frosted glass is translucent. (a) False (b) True
5. 5.True or false: turmeric powder is not needed for the shadow clock. (a) True (b) False
6. 6.🧺 Which of these is needed for the shadow clock? (a) yeast (b) a mirror (c) a straight stick (d) a magnet
7. 7.🔦 Which of these is translucent? (a) clean water (b) air (c) tissue paper (d) a brick
8. 8.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a sunny open place (c) a straight stick (d) a magnet
9. 9.🧺 Which of these is needed for the shadow clock? (a) a mirror (b) chalk to mark shadows (c) yeast (d) a magnet
10. 10.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) smaller (b) coloured (c) bigger (d) brighter
11. 11.⚖️ 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 time of day (d) the same spot
12. 12.🧺 Do we need a straight stick for the shadow clock? (a) not needed (b) needed
13. 13.🌍 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
14. 14.True or false: a sunny open place is not needed for the shadow clock. (a) True (b) False
15. 15.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) the time of day (b) shadow length (c) the same stick
16. 16.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a straight stick (c) turmeric powder (d) a clock to check
17. 17.🕰️ What is a sundial used for? (a) weighing things (b) telling the time (c) measuring rain (d) making rainbows
18. 18.🔍 Which is the odd one out? (a) frosted glass (b) air (c) tissue paper (d) butter paper
19. 19.True or false: oily paper is translucent. (a) False (b) True
20. 20.⚖️ 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 same spot (c) the time of day
21. 21.🧺 Do we need a clock to check for the shadow clock? (a) needed (b) not needed
22. 22.🔮 Predict: on a fully cloudy day, the sundial ___. (a) works better (b) does not work well (c) runs faster (d) shows two times
23. 23.🔦 Which of these is translucent? (a) your hand (b) a brick (c) butter paper (d) clean water
24. 24.🛟 While watching shadows outdoors, what must you never do? (a) mark with chalk (b) wear a cap (c) sit in the shade (d) look straight at the Sun
25. 25.🌞 When is a stick’s shadow the shortest? (a) at night (b) around noon (c) late evening (d) early morning
26. 26.🔍 Which is the odd one out? (a) clean water (b) clear glass (c) your hand (d) air
27. 27.📘 Why does a shadow form? (a) the object is cold (b) the ground is dark (c) light bends round it (d) an object blocks light
28. 28.🔦 Is a brick opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
29. 29.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) the time of day (b) shadow length (c) the stick kept upright (d) the same spot
30. 30.🧺 Do we need a battery cell for the shadow clock? (a) needed (b) not needed
31. 31.True or false: a sunny open place is needed for the shadow clock. (a) False (b) True
32. 32.🛟 What should you wear for a long time in the hot sun? (a) a woollen sweater (b) a cap or hat (c) a raincoat (d) nothing on your head
33. 33.🔦 Which of these is opaque? (a) a steel plate (b) frosted glass (c) clear glass (d) oily paper
34. 34.🔦 Is clear glass opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
35. 35.🔦 Is your hand opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
36. 36.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) round (b) missing (c) long (d) short
37. 37.🧺 Which of these is needed for the shadow clock? (a) a sunny open place (b) turmeric powder (c) a balloon (d) a battery cell
38. 38.True or false: butter paper is translucent. (a) False (b) True
39. 39.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the stick kept upright is what we measure. (a) True (b) False
40. 40.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a sunny open place (c) a mirror (d) a clock to check

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