Shadow and Sundial Experiment Worksheet

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

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