Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 847 · 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 clock to check (b) a straight stick (c) a sunny open place (d) yeast
2. 2.🔦 Which of these is translucent? (a) a wooden board (b) air (c) butter paper (d) clear glass
3. 3.🧺 Do we need a clock to check for the shadow clock? (a) needed (b) not needed
4. 4.True or false: air is transparent. (a) True (b) False
5. 5.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a battery cell (b) a straight stick (c) chalk to mark shadows (d) a clock to check
6. 6.🌞 When is a stick’s shadow the shortest? (a) at night (b) early morning (c) late evening (d) around noon
7. 7.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) short (b) long (c) round (d) missing
8. 8.🧺 Do we need yeast for the shadow clock? (a) needed (b) not needed
9. 9.🔦 Is oily paper opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
10. 10.🔦 Which of these is translucent? (a) frosted glass (b) your hand (c) a book (d) air
11. 11.🧺 Do we need a magnet for the shadow clock? (a) not needed (b) needed
12. 12.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “shadow length”? (a) we keep it the same (b) we measure it (c) we change it
13. 13.🔦 Which of these is transparent? (a) a steel plate (b) tissue paper (c) air (d) a brick
14. 14.True or false: clear plastic film is translucent. (a) False (b) True
15. 15.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) smaller (b) bigger (c) coloured (d) brighter
16. 16.True or false: a balloon is not needed for the shadow clock. (a) False (b) True
17. 17.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the stick kept upright”? (a) we measure it (b) we change it (c) we keep it the same
18. 18.🧺 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 clock to check (d) turmeric powder
19. 19.True or false: air is opaque. (a) True (b) False
20. 20.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) a clock to check (c) chalk to mark shadows (d) a balloon
21. 21.True or false: a battery cell is needed for the shadow clock. (a) True (b) False
22. 22.True or false: a mirror is not needed for the shadow clock. (a) False (b) True
23. 23.True or false: clear plastic film is transparent. (a) True (b) False
24. 24.🔍 Which is the odd one out? (a) clear glass (b) air (c) a steel plate (d) clean water
25. 25.🔦 Is air opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
26. 26.🧺 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 clock to check (d) a magnet
27. 27.🧺 Do we need a sunny open place for the shadow clock? (a) needed (b) not needed
28. 28.🧺 Do we need a battery cell for the shadow clock? (a) not needed (b) needed
29. 29.🔦 Is clear glass opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
30. 30.🌍 Why does the stick’s shadow move during the day? (a) the stick walks (b) the ground slides (c) the stick grows (d) Earth keeps spinning
31. 31.⚖️ 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
32. 32.🔦 Which of these is opaque? (a) frosted glass (b) clear plastic film (c) clear glass (d) a steel plate
33. 33.True or false: clear glass is transparent. (a) False (b) True
34. 34.🛟 While watching shadows outdoors, what must you never do? (a) sit in the shade (b) mark with chalk (c) wear a cap (d) look straight at the Sun
35. 35.🔦 Which of these is opaque? (a) butter paper (b) clear glass (c) clear plastic film (d) a brick
36. 36.🔦 Is butter paper opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
37. 37.True or false: turmeric powder is not needed for the shadow clock. (a) False (b) True
38. 38.⚖️ 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
39. 39.True or false: a book is opaque. (a) False (b) True
40. 40.True or false: air is translucent. (a) False (b) True

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