Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 53 · 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.🛟 While watching shadows outdoors, what must you never do? (a) look straight at the Sun (b) mark with chalk (c) wear a cap (d) sit in the shade
2. 2.True or false: a balloon is needed for the shadow clock. (a) False (b) True
3. 3.🧺 Which of these is not needed for the shadow clock? (a) a clock to check (b) a magnet (c) a straight stick (d) chalk to mark shadows
4. 4.🧺 Which of these is needed for the shadow clock? (a) yeast (b) a magnet (c) a clock to check (d) a battery cell
5. 5.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) bigger (b) smaller (c) brighter (d) coloured
6. 6.🔦 Is clear plastic film opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
7. 7.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a balloon (c) a sunny open place (d) a clock to check
8. 8.🧺 Which of these is needed for the shadow clock? (a) yeast (b) a sunny open place (c) a mirror (d) a battery cell
9. 9.🔍 Which is the odd one out? (a) clear plastic film (b) air (c) clean water (d) a wooden board
10. 10.🔍 Which is the odd one out? (a) a steel plate (b) frosted glass (c) tissue paper (d) oily paper
11. 11.⚖️ 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 time of day (c) the stick kept upright (d) the same spot
12. 12.⚖️ 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
13. 13.🔍 Which is the odd one out? (a) a steel plate (b) a book (c) tissue paper (d) a wooden board
14. 14.True or false: a book is opaque. (a) False (b) True
15. 15.📘 Why does a shadow form? (a) the ground is dark (b) light bends round it (c) the object is cold (d) an object blocks light
16. 16.True or false: chalk to mark shadows is needed for the shadow clock. (a) False (b) True
17. 17.🔍 Which is the odd one out? (a) oily paper (b) air (c) clean water (d) clear plastic film
18. 18.🔍 Which is the odd one out? (a) your hand (b) a book (c) a brick (d) clear plastic film
19. 19.⚖️ 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 keep it the same (c) we change it
20. 20.True or false: a sunny open place is not needed for the shadow clock. (a) False (b) True
21. 21.⚖️ 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 same stick
22. 22.🔦 Is tissue paper opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
23. 23.🌞 When is a stick’s shadow the shortest? (a) at night (b) around noon (c) early morning (d) late evening
24. 24.🌍 Why does the stick’s shadow move during the day? (a) the stick grows (b) the stick walks (c) Earth keeps spinning (d) the ground slides
25. 25.True or false: a steel plate is opaque. (a) True (b) False
26. 26.🔍 Which is the odd one out? (a) a steel plate (b) butter paper (c) a wooden board (d) a brick
27. 27.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) long (b) short (c) round (d) missing
28. 28.True or false: turmeric powder is not needed for the shadow clock. (a) False (b) True
29. 29.True or false: a magnet is needed for the shadow clock. (a) False (b) True
30. 30.🔦 Which of these is opaque? (a) air (b) clear plastic film (c) tissue paper (d) your hand
31. 31.🔦 Is a book opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
32. 32.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the stick kept upright is the one thing we change. (a) True (b) False
33. 33.🔮 Predict: on a fully cloudy day, the sundial ___. (a) works better (b) does not work well (c) runs faster (d) shows two times
34. 34.⚖️ 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
35. 35.🔦 Is your hand opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
36. 36.True or false: tissue paper is translucent. (a) False (b) True
37. 37.🧺 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 battery cell (d) a clock to check
38. 38.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a mirror (b) a sunny open place (c) chalk to mark shadows (d) a straight stick
39. 39.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is kept the same. (a) True (b) False
40. 40.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) a mirror (c) chalk to mark shadows (d) a sunny open place

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