Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 417 · 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.True or false: air is opaque. (a) False (b) True
2. 2.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a balloon (c) a straight stick (d) a sunny open place
3. 3.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same spot”? (a) we keep it the same (b) we change it (c) we measure it
4. 4.🛟 While watching shadows outdoors, what must you never do? (a) sit in the shade (b) look straight at the Sun (c) wear a cap (d) mark with chalk
5. 5.True or false: a book is translucent. (a) False (b) True
6. 6.🛟 What should you wear for a long time in the hot sun? (a) a woollen sweater (b) a cap or hat (c) nothing on your head (d) a raincoat
7. 7.🔦 Is a wooden board opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
8. 8.📘 Why does a shadow form? (a) the object is cold (b) light bends round it (c) the ground is dark (d) an object blocks light
9. 9.True or false: a wooden board is translucent. (a) True (b) False
10. 10.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the time of day”? (a) we measure it (b) we keep it the same (c) we change it
11. 11.🔦 Is clear glass opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
12. 12.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) smaller (b) bigger (c) coloured (d) brighter
13. 13.🔦 Is a steel plate opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
14. 14.⚖️ 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 stick (c) the time of day
15. 15.True or false: chalk to mark shadows is not needed for the shadow clock. (a) True (b) False
16. 16.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a mirror (c) a sunny open place (d) a clock to check
17. 17.True or false: clear glass is transparent. (a) False (b) True
18. 18.True or false: a steel plate is transparent. (a) True (b) False
19. 19.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) east (b) up (c) north (d) west
20. 20.⚖️ 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 measure it (c) we keep it the same
21. 21.🧺 Which of these is needed for the shadow clock? (a) a mirror (b) a clock to check (c) a balloon (d) yeast
22. 22.True or false: a sunny open place is needed for the shadow clock. (a) True (b) False
23. 23.🔍 Which is the odd one out? (a) butter paper (b) clear plastic film (c) tissue paper (d) oily paper
24. 24.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a straight stick (c) a battery cell (d) a sunny open place
25. 25.🔮 Predict: on a fully cloudy day, the sundial ___. (a) runs faster (b) works better (c) does not work well (d) shows two times
26. 26.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) chalk to mark shadows (c) a sunny open place (d) yeast
27. 27.🔍 Which is the odd one out? (a) a wooden board (b) air (c) a steel plate (d) a book
28. 28.🧺 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 magnet (d) a sunny open place
29. 29.🔦 Is butter paper opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
30. 30.🔦 Which of these is transparent? (a) frosted glass (b) butter paper (c) air (d) a book
31. 31.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) shadow length (b) the stick kept upright (c) the time of day (d) the same spot
32. 32.🧺 Which of these is not needed for the shadow clock? (a) a clock to check (b) chalk to mark shadows (c) a straight stick (d) turmeric powder
33. 33.True or false: a battery cell is not needed for the shadow clock. (a) False (b) True
34. 34.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) round (b) long (c) missing (d) short
35. 35.🔦 Is air opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
36. 36.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) a straight stick (c) a clock to check (d) yeast
37. 37.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a balloon (c) a sunny open place (d) a clock to check
38. 38.🧺 Do we need a battery cell for the shadow clock? (a) not needed (b) needed
39. 39.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is kept the same. (a) True (b) False
40. 40.🔦 Which of these is translucent? (a) a wooden board (b) your hand (c) clear plastic film (d) frosted glass

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