Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 780 · 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.🌍 Why does the stick’s shadow move during the day? (a) the stick walks (b) the stick grows (c) the ground slides (d) Earth keeps spinning
2. 2.🛟 While watching shadows outdoors, what must you never do? (a) wear a cap (b) mark with chalk (c) sit in the shade (d) look straight at the Sun
3. 3.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same stick”? (a) we keep it the same (b) we measure it (c) we change it
4. 4.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a battery cell (b) a sunny open place (c) a clock to check (d) chalk to mark shadows
5. 5.True or false: chalk to mark shadows is needed for the shadow clock. (a) True (b) False
6. 6.🔦 Which of these is transparent? (a) butter paper (b) frosted glass (c) clear glass (d) tissue paper
7. 7.🔦 Is clean water opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
8. 8.🧺 Which of these is not needed for the shadow clock? (a) a balloon (b) a straight stick (c) a clock to check (d) a sunny open place
9. 9.⚖️ 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 keep it the same (c) we measure it
10. 10.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) round (b) long (c) short (d) missing
11. 11.⚖️ 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
12. 12.🔍 Which is the odd one out? (a) a steel plate (b) oily paper (c) a brick (d) a wooden board
13. 13.⚖️ 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
14. 14.🔦 Which of these is opaque? (a) oily paper (b) clear glass (c) clean water (d) a book
15. 15.🔍 Which is the odd one out? (a) a brick (b) your hand (c) a wooden board (d) air
16. 16.⚖️ 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
17. 17.True or false: a balloon is needed for the shadow clock. (a) True (b) False
18. 18.🔍 Which is the odd one out? (a) air (b) clean water (c) clear glass (d) a wooden board
19. 19.🔦 Which of these is opaque? (a) air (b) tissue paper (c) butter paper (d) a wooden board
20. 20.🔦 Is clear plastic film opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
21. 21.🧺 Which of these is needed for the shadow clock? (a) a battery cell (b) turmeric powder (c) a clock to check (d) a mirror
22. 22.True or false: yeast is needed for the shadow clock. (a) False (b) True
23. 23.🔦 Is a steel plate opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
24. 24.🔦 Is a book opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
25. 25.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the time of day is what we measure. (a) True (b) False
26. 26.📘 Why does a shadow form? (a) an object blocks light (b) the ground is dark (c) light bends round it (d) the object is cold
27. 27.🌞 When is a stick’s shadow the shortest? (a) early morning (b) late evening (c) around noon (d) at night
28. 28.True or false: a sunny open place is not needed for the shadow clock. (a) True (b) False
29. 29.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a straight stick (c) a clock to check (d) yeast
30. 30.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) a sunny open place (c) chalk to mark shadows (d) turmeric powder
31. 31.🕰️ What is a sundial used for? (a) measuring rain (b) telling the time (c) making rainbows (d) weighing things
32. 32.True or false: oily paper is translucent. (a) True (b) False
33. 33.🔍 Which is the odd one out? (a) a brick (b) air (c) clear glass (d) clean water
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.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) chalk to mark shadows (c) a mirror (d) a sunny open place
36. 36.True or false: a battery cell is not needed for the shadow clock. (a) False (b) True
37. 37.🔍 Which is the odd one out? (a) a steel plate (b) clean water (c) a book (d) a wooden board
38. 38.⚖️ 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
39. 39.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) shadow length (b) the time of day (c) the stick kept upright
40. 40.🔮 Predict: on a fully cloudy day, the sundial ___. (a) shows two times (b) runs faster (c) works better (d) does not work well

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