Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 443 · 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.⚖️ 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 spot (b) the same stick (c) the time of day (d) the stick kept upright
2. 2.🛟 While watching shadows outdoors, what must you never do? (a) wear a cap (b) sit in the shade (c) look straight at the Sun (d) mark with chalk
3. 3.True or false: a wooden board is opaque. (a) False (b) True
4. 4.🧺 Which of these is needed for the shadow clock? (a) a magnet (b) a straight stick (c) a mirror (d) a balloon
5. 5.🌞 When is a stick’s shadow the shortest? (a) around noon (b) early morning (c) at night (d) late evening
6. 6.🧺 Which of these is not needed for the shadow clock? (a) a balloon (b) chalk to mark shadows (c) a sunny open place (d) a straight stick
7. 7.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) north (b) east (c) west (d) up
8. 8.🧺 Do we need a mirror for the shadow clock? (a) needed (b) not needed
9. 9.🔍 Which is the odd one out? (a) oily paper (b) clear plastic film (c) butter paper (d) frosted glass
10. 10.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) missing (b) round (c) long (d) short
11. 11.🧺 Do we need yeast for the shadow clock? (a) needed (b) not needed
12. 12.True or false: chalk to mark shadows is needed for the shadow clock. (a) False (b) True
13. 13.🔍 Which is the odd one out? (a) clear glass (b) clean water (c) air (d) frosted glass
14. 14.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) chalk to mark shadows (c) a balloon (d) a straight stick
15. 15.🔍 Which is the odd one out? (a) clean water (b) clear plastic film (c) a wooden board (d) air
16. 16.True or false: a wooden board is translucent. (a) True (b) False
17. 17.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a straight stick (c) turmeric powder (d) a sunny open place
18. 18.🔦 Which of these is opaque? (a) air (b) butter paper (c) a brick (d) oily paper
19. 19.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is kept the same. (a) False (b) True
20. 20.📘 Why does a shadow form? (a) the ground is dark (b) the object is cold (c) an object blocks light (d) light bends round it
21. 21.🔦 Is clear glass opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
22. 22.⚖️ 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
23. 23.🔦 Is air opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
24. 24.⚖️ 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) False (b) True
25. 25.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a mirror (c) a straight stick (d) a sunny open place
26. 26.🧺 Do we need turmeric powder for the shadow clock? (a) needed (b) not needed
27. 27.🔦 Which of these is translucent? (a) a brick (b) clear glass (c) a book (d) tissue paper
28. 28.🌍 Why does the stick’s shadow move during the day? (a) the ground slides (b) the stick grows (c) Earth keeps spinning (d) the stick walks
29. 29.🔮 Predict: on a fully cloudy day, the sundial ___. (a) does not work well (b) runs faster (c) shows two times (d) works better
30. 30.🔍 Which is the odd one out? (a) air (b) butter paper (c) frosted glass (d) oily paper
31. 31.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) brighter (b) coloured (c) smaller (d) bigger
32. 32.⚖️ 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 measure it (c) we change it
33. 33.True or false: a brick is transparent. (a) True (b) False
34. 34.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) the time of day (b) the stick kept upright (c) shadow length (d) the same stick
35. 35.🧺 Which of these is needed for the shadow clock? (a) a balloon (b) a clock to check (c) a mirror (d) a magnet
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 measure it (b) we keep it the same (c) we change it
37. 37.True or false: a battery cell is not needed for the shadow clock. (a) False (b) True
38. 38.🔦 Is butter paper opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
39. 39.⚖️ 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
40. 40.🛟 What should you wear for a long time in the hot sun? (a) a cap or hat (b) a raincoat (c) a woollen sweater (d) nothing on your head

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