Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 405 · 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) a sunny open place (b) a straight stick (c) a battery cell (d) chalk to mark shadows
2. 2.🔮 Predict: on a fully cloudy day, the sundial ___. (a) works better (b) does not work well (c) shows two times (d) runs faster
3. 3.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) west (b) up (c) north (d) east
4. 4.📘 Why does a shadow form? (a) light bends round it (b) an object blocks light (c) the object is cold (d) the ground is dark
5. 5.🧺 Which of these is not needed for the shadow clock? (a) a clock to check (b) a straight stick (c) a magnet (d) chalk to mark shadows
6. 6.🕰️ What is a sundial used for? (a) telling the time (b) making rainbows (c) weighing things (d) measuring rain
7. 7.🧺 Do we need a sunny open place for the shadow clock? (a) not needed (b) needed
8. 8.🔦 Is a wooden board opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
9. 9.🧺 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) yeast (d) a clock to check
10. 10.🛟 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
11. 11.🌍 Why does the stick’s shadow move during the day? (a) the stick grows (b) the ground slides (c) the stick walks (d) Earth keeps spinning
12. 12.🔦 Is a steel plate opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
13. 13.True or false: a steel plate is opaque. (a) False (b) True
14. 14.True or false: a clock to check is not needed for the shadow clock. (a) False (b) True
15. 15.🔦 Is your hand opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
16. 16.True or false: your hand is opaque. (a) True (b) False
17. 17.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) short (b) missing (c) round (d) long
18. 18.⚖️ 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
19. 19.🔍 Which is the odd one out? (a) tissue paper (b) oily paper (c) clear plastic film (d) butter paper
20. 20.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a sunny open place (c) a clock to check (d) turmeric powder
21. 21.🔦 Which of these is opaque? (a) clean water (b) your hand (c) butter paper (d) oily paper
22. 22.🔦 Which of these is transparent? (a) frosted glass (b) a steel plate (c) clean water (d) a wooden board
23. 23.⚖️ 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
24. 24.🔍 Which is the odd one out? (a) air (b) a wooden board (c) a steel plate (d) your hand
25. 25.🧺 Do we need a straight stick for the shadow clock? (a) needed (b) not needed
26. 26.🔦 Is air opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
27. 27.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) chalk to mark shadows (c) a battery cell (d) a straight stick
28. 28.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) the stick kept upright (b) the time of day (c) shadow length
29. 29.🔍 Which is the odd one out? (a) clear plastic film (b) air (c) clean water (d) frosted glass
30. 30.🔦 Which of these is opaque? (a) frosted glass (b) a brick (c) tissue paper (d) clear plastic film
31. 31.True or false: a straight stick is not needed for the shadow clock. (a) False (b) True
32. 32.⚖️ 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 stick kept upright (c) the time of day (d) the same stick
33. 33.🔍 Which is the odd one out? (a) a brick (b) your hand (c) clear glass (d) a wooden board
34. 34.🌞 When is a stick’s shadow the shortest? (a) around noon (b) early morning (c) at night (d) late evening
35. 35.⚖️ 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
36. 36.True or false: chalk to mark shadows is not needed for the shadow clock. (a) False (b) True
37. 37.🧺 Do we need yeast for the shadow clock? (a) needed (b) not needed
38. 38.True or false: a book is opaque. (a) True (b) False
39. 39.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a mirror (b) a clock to check (c) a straight stick (d) chalk to mark shadows
40. 40.🔍 Which is the odd one out? (a) oily paper (b) a steel plate (c) frosted glass (d) butter paper

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