Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 139 · 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.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) yeast (c) a sunny open place (d) a clock to check
2. 2.📘 Why does a shadow form? (a) light bends round it (b) the ground is dark (c) the object is cold (d) an object blocks light
3. 3.⚖️ 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) False (b) True
4. 4.🧺 Do we need a sunny open place for the shadow clock? (a) needed (b) not needed
5. 5.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) shadow length (b) the same stick (c) the stick kept upright (d) the same spot
6. 6.True or false: a sunny open place is needed for the shadow clock. (a) True (b) False
7. 7.True or false: a clock to check is needed for the shadow clock. (a) False (b) True
8. 8.🔦 Is a brick opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
9. 9.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) north (b) east (c) up (d) west
10. 10.🔍 Which is the odd one out? (a) a brick (b) a steel plate (c) butter paper (d) a book
11. 11.🔦 Which of these is translucent? (a) a brick (b) your hand (c) clear glass (d) oily paper
12. 12.🔦 Is oily paper opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
13. 13.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the stick kept upright”? (a) we change it (b) we keep it the same (c) we measure it
14. 14.🛟 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
15. 15.🔮 Predict: on a fully cloudy day, the sundial ___. (a) does not work well (b) works better (c) shows two times (d) runs faster
16. 16.🔦 Which of these is transparent? (a) your hand (b) a book (c) oily paper (d) clean water
17. 17.True or false: a wooden board is opaque. (a) True (b) False
18. 18.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is the one thing we change. (a) True (b) False
19. 19.🧺 Which of these is needed for the shadow clock? (a) turmeric powder (b) a magnet (c) chalk to mark shadows (d) a battery cell
20. 20.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) the same stick (b) shadow length (c) the time of day
21. 21.🔍 Which is the odd one out? (a) clean water (b) clear glass (c) clear plastic film (d) a brick
22. 22.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the stick kept upright is the one thing we change. (a) False (b) True
23. 23.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) brighter (b) smaller (c) coloured (d) bigger
24. 24.🔦 Which of these is translucent? (a) clear glass (b) clear plastic film (c) tissue paper (d) clean water
25. 25.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) the time of day (b) the same spot (c) shadow length
26. 26.True or false: a brick is opaque. (a) True (b) False
27. 27.🛟 While watching shadows outdoors, what must you never do? (a) mark with chalk (b) sit in the shade (c) wear a cap (d) look straight at the Sun
28. 28.🔍 Which is the odd one out? (a) tissue paper (b) oily paper (c) frosted glass (d) a book
29. 29.🔦 Which of these is translucent? (a) a book (b) clear plastic film (c) frosted glass (d) a wooden board
30. 30.🔦 Is clear glass opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
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) the same stick (b) the same spot (c) the stick kept upright (d) the time of day
32. 32.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) short (b) missing (c) long (d) round
33. 33.🔍 Which is the odd one out? (a) clear plastic film (b) a book (c) a steel plate (d) your hand
34. 34.True or false: a magnet is not needed for the shadow clock. (a) False (b) True
35. 35.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the time of day is kept the same. (a) True (b) False
36. 36.True or false: a mirror is needed for the shadow clock. (a) True (b) False
37. 37.True or false: your hand is opaque. (a) False (b) True
38. 38.⚖️ 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
39. 39.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “shadow length”? (a) we change it (b) we keep it the same (c) we measure it
40. 40.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is kept the same. (a) False (b) True

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