Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 62 · 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 a battery cell for the shadow clock? (a) not needed (b) needed
2. 2.🧺 Do we need a sunny open place for the shadow clock? (a) needed (b) not needed
3. 3.🛟 What should you wear for a long time in the hot sun? (a) a raincoat (b) a cap or hat (c) nothing on your head (d) a woollen sweater
4. 4.🔦 Which of these is translucent? (a) clear glass (b) a brick (c) a steel plate (d) butter paper
5. 5.🌞 When is a stick’s shadow the shortest? (a) late evening (b) around noon (c) early morning (d) at night
6. 6.🧺 Which of these is needed for the shadow clock? (a) a balloon (b) a clock to check (c) a mirror (d) a battery cell
7. 7.🧺 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
8. 8.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) east (b) up (c) west (d) north
9. 9.🧺 Do we need yeast for the shadow clock? (a) not needed (b) needed
10. 10.🔮 Predict: on a fully cloudy day, the sundial ___. (a) runs faster (b) does not work well (c) works better (d) shows two times
11. 11.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) yeast (b) a sunny open place (c) chalk to mark shadows (d) a clock to check
12. 12.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a battery cell (c) a clock to check (d) chalk to mark shadows
13. 13.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) brighter (b) bigger (c) smaller (d) coloured
14. 14.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a straight stick (c) yeast (d) a sunny open place
15. 15.🔦 Is frosted glass opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
16. 16.🔦 Which of these is opaque? (a) clean water (b) clear plastic film (c) a wooden board (d) air
17. 17.🧺 Do we need a straight stick for the shadow clock? (a) needed (b) not needed
18. 18.True or false: chalk to mark shadows is needed for the shadow clock. (a) False (b) True
19. 19.🛟 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
20. 20.True or false: a magnet is needed for the shadow clock. (a) True (b) False
21. 21.True or false: a battery cell is not needed for the shadow clock. (a) False (b) True
22. 22.⚖️ 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 same spot (c) the stick kept upright (d) the time of day
23. 23.🔦 Is clear plastic film opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
24. 24.🧺 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
25. 25.🧺 Do we need turmeric powder for the shadow clock? (a) needed (b) not needed
26. 26.🔦 Is a brick opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
27. 27.📘 Why does a shadow form? (a) the object is cold (b) light bends round it (c) an object blocks light (d) the ground is dark
28. 28.True or false: a clock to check is not needed for the shadow clock. (a) False (b) True
29. 29.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) long (b) missing (c) round (d) short
30. 30.True or false: a brick is transparent. (a) True (b) False
31. 31.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the time of day”? (a) we keep it the same (b) we change it (c) we measure it
32. 32.True or false: a balloon is not needed for the shadow clock. (a) False (b) True
33. 33.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) the stick kept upright (b) the same stick (c) shadow length (d) the same spot
34. 34.🧺 Which of these is not needed for the shadow clock? (a) a magnet (b) a clock to check (c) chalk to mark shadows (d) a straight stick
35. 35.🧺 Which of these is not needed for the shadow clock? (a) turmeric powder (b) chalk to mark shadows (c) a clock to check (d) a sunny open place
36. 36.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same spot”? (a) we change it (b) we measure it (c) we keep it the same
37. 37.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is what we measure. (a) False (b) True
38. 38.🧺 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 mirror
39. 39.True or false: a straight stick is needed for the shadow clock. (a) False (b) True
40. 40.🧺 Which of these is needed for the shadow clock? (a) a battery cell (b) a straight stick (c) yeast (d) a balloon

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