Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 815 · 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.True or false: a mirror is needed for the shadow clock. (a) False (b) True
2. 2.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) the time of day (b) the same stick (c) shadow length
3. 3.⚖️ 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
4. 4.True or false: oily paper is transparent. (a) True (b) False
5. 5.🧺 Do we need a sunny open place for the shadow clock? (a) needed (b) not needed
6. 6.True or false: chalk to mark shadows is not needed for the shadow clock. (a) False (b) True
7. 7.🔦 Is frosted glass opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
8. 8.⚖️ 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 change it (c) we measure it
9. 9.🛟 What should you wear for a long time in the hot sun? (a) a woollen sweater (b) nothing on your head (c) a raincoat (d) a cap or hat
10. 10.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a sunny open place (c) a battery cell (d) a clock to check
11. 11.📘 Why does a shadow form? (a) light bends round it (b) the object is cold (c) an object blocks light (d) the ground is dark
12. 12.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) the same spot (b) the same stick (c) the stick kept upright (d) shadow length
13. 13.🔦 Is clean water opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
14. 14.🧺 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) chalk to mark shadows
15. 15.⚖️ 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
16. 16.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) the same spot (b) the time of day (c) shadow length
17. 17.🛟 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
18. 18.True or false: clear plastic film is translucent. (a) True (b) False
19. 19.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a sunny open place (c) yeast (d) a straight stick
20. 20.True or false: a straight stick is not needed for the shadow clock. (a) True (b) False
21. 21.True or false: frosted glass is translucent. (a) False (b) True
22. 22.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a mirror (c) a sunny open place (d) a clock to check
23. 23.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) bigger (b) coloured (c) brighter (d) smaller
24. 24.⚖️ 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
25. 25.⚖️ 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) False (b) True
26. 26.True or false: yeast is needed for the shadow clock. (a) False (b) True
27. 27.True or false: a battery cell is needed for the shadow clock. (a) True (b) False
28. 28.True or false: your hand is transparent. (a) True (b) False
29. 29.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a straight stick (c) chalk to mark shadows (d) a balloon
30. 30.🔍 Which is the odd one out? (a) air (b) clear glass (c) frosted glass (d) clean water
31. 31.⚖️ 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
32. 32.🔦 Is clear glass opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
33. 33.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is what we measure. (a) False (b) True
34. 34.🌞 When is a stick’s shadow the shortest? (a) early morning (b) late evening (c) at night (d) around noon
35. 35.True or false: a sunny open place is needed for the shadow clock. (a) False (b) True
36. 36.🔦 Which of these is translucent? (a) your hand (b) frosted glass (c) a book (d) a wooden board
37. 37.🔍 Which is the odd one out? (a) clean water (b) a book (c) a steel plate (d) your hand
38. 38.True or false: a magnet is not needed for the shadow clock. (a) True (b) False
39. 39.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) short (b) missing (c) round (d) long
40. 40.True or false: a balloon is not needed for the shadow clock. (a) True (b) False

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