Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 680 · 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.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) missing (b) round (c) short (d) long
2. 2.⚖️ 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) the stick kept upright (c) the time of day (d) shadow length
3. 3.⚖️ 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
4. 4.🔦 Which of these is transparent? (a) frosted glass (b) air (c) a book (d) butter paper
5. 5.🧺 Do we need chalk to mark shadows for the shadow clock? (a) not needed (b) needed
6. 6.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a magnet (c) a clock to check (d) chalk to mark shadows
7. 7.📘 Why does a shadow form? (a) an object blocks light (b) the object is cold (c) light bends round it (d) the ground is dark
8. 8.🧺 Do we need a balloon for the shadow clock? (a) needed (b) not needed
9. 9.🧺 Do we need a clock to check for the shadow clock? (a) not needed (b) needed
10. 10.🌞 When is a stick’s shadow the shortest? (a) at night (b) around noon (c) late evening (d) early morning
11. 11.🧺 Which of these is not needed for the shadow clock? (a) a clock to check (b) a straight stick (c) a battery cell (d) chalk to mark shadows
12. 12.True or false: clear glass is transparent. (a) False (b) True
13. 13.🛟 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
14. 14.🔮 Predict: on a fully cloudy day, the sundial ___. (a) runs faster (b) works better (c) shows two times (d) does not work well
15. 15.🧺 Do we need a straight stick for the shadow clock? (a) not needed (b) needed
16. 16.True or false: yeast is not needed for the shadow clock. (a) False (b) True
17. 17.🔦 Is tissue paper opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
18. 18.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is the one thing we change. (a) False (b) True
19. 19.🔦 Which of these is translucent? (a) air (b) a steel plate (c) frosted glass (d) a wooden board
20. 20.🔍 Which is the odd one out? (a) clean water (b) a book (c) clear glass (d) air
21. 21.True or false: a steel plate is transparent. (a) True (b) False
22. 22.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) bigger (b) smaller (c) brighter (d) coloured
23. 23.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) the stick kept upright (b) the same stick (c) the time of day (d) shadow length
24. 24.🧺 Do we need a battery cell for the shadow clock? (a) not needed (b) needed
25. 25.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) chalk to mark shadows (c) turmeric powder (d) a straight stick
26. 26.True or false: a wooden board is transparent. (a) False (b) True
27. 27.⚖️ 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
28. 28.🧺 Which of these is needed for the shadow clock? (a) a clock to check (b) turmeric powder (c) yeast (d) a battery cell
29. 29.🕰️ What is a sundial used for? (a) making rainbows (b) weighing things (c) measuring rain (d) telling the time
30. 30.True or false: your hand is translucent. (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) a clock to check (c) a sunny open place (d) a balloon
32. 32.🛟 While watching shadows outdoors, what must you never do? (a) look straight at the Sun (b) mark with chalk (c) sit in the shade (d) wear a cap
33. 33.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same stick”? (a) we keep it the same (b) we measure it (c) we change it
34. 34.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) yeast (c) a straight stick (d) chalk to mark shadows
35. 35.🧺 Do we need turmeric powder for the shadow clock? (a) not needed (b) needed
36. 36.🧺 Do we need a sunny open place for the shadow clock? (a) needed (b) not needed
37. 37.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “shadow length”? (a) we measure it (b) we change it (c) we keep it the same
38. 38.🔦 Is a brick opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
39. 39.🧺 Which of these is needed for the shadow clock? (a) turmeric powder (b) a battery cell (c) chalk to mark shadows (d) a balloon
40. 40.🧺 Do we need a magnet for the shadow clock? (a) not needed (b) needed

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