Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 506 · 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.🧺 Which of these is needed for the shadow clock? (a) a balloon (b) yeast (c) a straight stick (d) a magnet
2. 2.🔍 Which is the odd one out? (a) air (b) clear glass (c) clean water (d) butter paper
3. 3.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) coloured (b) brighter (c) bigger (d) smaller
4. 4.🔮 Predict: on a fully cloudy day, the sundial ___. (a) runs faster (b) shows two times (c) does not work well (d) works better
5. 5.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “shadow length”? (a) we measure it (b) we change it (c) we keep it the same
6. 6.🧺 Do we need chalk to mark shadows for the shadow clock? (a) not needed (b) needed
7. 7.True or false: a mirror is not needed for the shadow clock. (a) False (b) True
8. 8.True or false: air is opaque. (a) False (b) True
9. 9.🔦 Is clear plastic film opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
10. 10.🧺 Which of these is needed for the shadow clock? (a) a battery cell (b) a magnet (c) yeast (d) chalk to mark shadows
11. 11.True or false: a brick is opaque. (a) True (b) False
12. 12.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) round (b) short (c) missing (d) long
13. 13.True or false: chalk to mark shadows is not needed for the shadow clock. (a) False (b) True
14. 14.True or false: a steel plate is translucent. (a) False (b) True
15. 15.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) the same stick (b) the same spot (c) shadow length (d) the time of day
16. 16.⚖️ 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
17. 17.⚖️ 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
18. 18.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a mirror (b) a sunny open place (c) a straight stick (d) a clock to check
19. 19.🔦 Is butter paper opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
20. 20.⚖️ 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
21. 21.True or false: a sunny open place is not needed for the shadow clock. (a) True (b) False
22. 22.🧺 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 magnet (d) a clock to check
23. 23.🔦 Which of these is opaque? (a) a brick (b) air (c) clear glass (d) tissue paper
24. 24.True or false: clean water is opaque. (a) True (b) False
25. 25.⚖️ 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
26. 26.⚖️ 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 time of day (c) the same spot (d) the same stick
27. 27.🌍 Why does the stick’s shadow move during the day? (a) Earth keeps spinning (b) the stick grows (c) the ground slides (d) the stick walks
28. 28.⚖️ 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
29. 29.True or false: clear glass is transparent. (a) True (b) False
30. 30.🔦 Which of these is translucent? (a) frosted glass (b) your hand (c) clear plastic film (d) clear glass
31. 31.🛟 While watching shadows outdoors, what must you never do? (a) wear a cap (b) sit in the shade (c) mark with chalk (d) look straight at the Sun
32. 32.🔦 Is a wooden board opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
33. 33.📘 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
34. 34.🧺 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) a balloon
35. 35.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) up (b) north (c) east (d) west
36. 36.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a clock to check (c) a battery cell (d) a sunny open place
37. 37.⚖️ 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 measure it (c) we change it
38. 38.True or false: a book is transparent. (a) False (b) True
39. 39.🔍 Which is the odd one out? (a) butter paper (b) tissue paper (c) clear plastic film (d) frosted glass
40. 40.True or false: yeast is not needed for the shadow clock. (a) False (b) True

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