Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 362 · 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.🛟 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
2. 2.⚖️ 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
3. 3.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a magnet (c) a clock to check (d) a sunny open place
4. 4.⚖️ 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
5. 5.True or false: frosted glass is transparent. (a) True (b) False
6. 6.🔦 Which of these is opaque? (a) clear glass (b) a book (c) tissue paper (d) butter paper
7. 7.⚖️ 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 stick kept upright (c) the time of day
8. 8.🔦 Is clean water opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
9. 9.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is what we measure. (a) False (b) True
10. 10.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is the one thing we change. (a) True (b) False
11. 11.🧺 Do we need turmeric powder for the shadow clock? (a) needed (b) not needed
12. 12.True or false: turmeric powder is needed for the shadow clock. (a) False (b) True
13. 13.True or false: a balloon is needed for the shadow clock. (a) False (b) True
14. 14.⚖️ 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) True (b) False
15. 15.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is kept the same. (a) True (b) False
16. 16.🧺 Which of these is needed for the shadow clock? (a) a battery cell (b) turmeric powder (c) a clock to check (d) a magnet
17. 17.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) a straight stick (c) chalk to mark shadows (d) a mirror
18. 18.🔍 Which is the odd one out? (a) frosted glass (b) butter paper (c) a steel plate (d) tissue paper
19. 19.True or false: a battery cell is not needed for the shadow clock. (a) False (b) True
20. 20.🔦 Is a steel plate opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
21. 21.🧺 Do we need a sunny open place for the shadow clock? (a) needed (b) not needed
22. 22.🧺 Which of these is needed for the shadow clock? (a) a magnet (b) a battery cell (c) a straight stick (d) turmeric powder
23. 23.True or false: a sunny open place is needed for the shadow clock. (a) False (b) True
24. 24.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) east (b) north (c) up (d) west
25. 25.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) brighter (b) smaller (c) coloured (d) bigger
26. 26.True or false: a book is transparent. (a) False (b) True
27. 27.🔦 Is tissue paper opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
28. 28.🧺 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) yeast (d) chalk to mark shadows
29. 29.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) chalk to mark shadows (c) turmeric powder (d) a sunny open place
30. 30.⚖️ 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) False (b) True
31. 31.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) missing (b) round (c) short (d) long
32. 32.🔦 Is clear plastic film opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
33. 33.🔍 Which is the odd one out? (a) a brick (b) air (c) clean water (d) clear plastic film
34. 34.🧺 Which of these is needed for the shadow clock? (a) a balloon (b) a sunny open place (c) yeast (d) turmeric powder
35. 35.🔦 Is air opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
36. 36.🛟 While watching shadows outdoors, what must you never do? (a) wear a cap (b) mark with chalk (c) look straight at the Sun (d) sit in the shade
37. 37.🔦 Which of these is transparent? (a) oily paper (b) clear glass (c) your hand (d) a book
38. 38.📘 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
39. 39.🌞 When is a stick’s shadow the shortest? (a) at night (b) around noon (c) early morning (d) late evening
40. 40.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the time of day”? (a) we change it (b) we measure it (c) we keep it the same

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