Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 176 · 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.🛟 What should you wear for a long time in the hot sun? (a) a woollen sweater (b) a cap or hat (c) nothing on your head (d) a raincoat
2. 2.🔦 Which of these is opaque? (a) clean water (b) air (c) clear plastic film (d) a wooden board
3. 3.⚖️ 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 keep it the same (c) we measure it
4. 4.True or false: a balloon is not needed for the shadow clock. (a) True (b) False
5. 5.⚖️ 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) True (b) False
6. 6.True or false: turmeric powder is needed for the shadow clock. (a) False (b) True
7. 7.📘 Why does a shadow form? (a) the object is cold (b) an object blocks light (c) light bends round it (d) the ground is dark
8. 8.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) brighter (b) smaller (c) coloured (d) bigger
9. 9.🧺 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 mirror
10. 10.🔦 Which of these is translucent? (a) butter paper (b) a wooden board (c) a steel plate (d) your hand
11. 11.True or false: clear plastic film is translucent. (a) True (b) False
12. 12.🔍 Which is the odd one out? (a) oily paper (b) butter paper (c) frosted glass (d) air
13. 13.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the time of day”? (a) we keep it the same (b) we measure it (c) we change it
14. 14.🔍 Which is the odd one out? (a) frosted glass (b) air (c) clear plastic film (d) clear glass
15. 15.True or false: a sunny open place is needed for the shadow clock. (a) False (b) True
16. 16.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) the time of day (b) shadow length (c) the same spot (d) the stick kept upright
17. 17.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “shadow length”? (a) we change it (b) we measure it (c) we keep it the same
18. 18.🧺 Do we need a sunny open place for the shadow clock? (a) not needed (b) needed
19. 19.🌞 When is a stick’s shadow the shortest? (a) early morning (b) late evening (c) around noon (d) at night
20. 20.⚖️ 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) False (b) True
21. 21.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) chalk to mark shadows (c) a battery cell (d) a sunny open place
22. 22.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) a sunny open place (c) a clock to check (d) a mirror
23. 23.🔦 Is a book opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
24. 24.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is what we measure. (a) True (b) False
25. 25.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is kept the same. (a) False (b) True
26. 26.True or false: a clock to check is needed for the shadow clock. (a) False (b) True
27. 27.🧺 Do we need a balloon for the shadow clock? (a) not needed (b) needed
28. 28.⚖️ 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 same spot (c) the same stick (d) shadow length
29. 29.🔍 Which is the odd one out? (a) air (b) clear glass (c) clean water (d) a book
30. 30.True or false: turmeric powder is not needed for the shadow clock. (a) False (b) True
31. 31.True or false: your hand is opaque. (a) True (b) False
32. 32.True or false: a wooden board is translucent. (a) True (b) False
33. 33.True or false: oily paper is translucent. (a) True (b) False
34. 34.🔦 Is air opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
35. 35.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) turmeric powder (b) a sunny open place (c) a straight stick (d) a clock to check
36. 36.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) chalk to mark shadows (c) a balloon (d) a straight stick
37. 37.🛟 While watching shadows outdoors, what must you never do? (a) wear a cap (b) mark with chalk (c) look straight at the Sun (d) sit in the shade
38. 38.🌍 Why does the stick’s shadow move during the day? (a) the stick walks (b) the stick grows (c) Earth keeps spinning (d) the ground slides
39. 39.True or false: clean water is translucent. (a) False (b) True
40. 40.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the stick kept upright is what we measure. (a) False (b) True

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