Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 207 · 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.🧺 Do we need chalk to mark shadows for the shadow clock? (a) not needed (b) needed
2. 2.🔦 Is clear glass opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
3. 3.🔮 Predict: on a fully cloudy day, the sundial ___. (a) works better (b) runs faster (c) shows two times (d) does not work well
4. 4.⚖️ 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
5. 5.🛟 While watching shadows outdoors, what must you never do? (a) look straight at the Sun (b) wear a cap (c) sit in the shade (d) mark with chalk
6. 6.⚖️ 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 stick kept upright (c) the time of day
7. 7.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a balloon (b) a clock to check (c) a straight stick (d) a sunny open place
8. 8.True or false: a brick is opaque. (a) True (b) False
9. 9.⚖️ 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 keep it the same (c) we measure it
10. 10.🧺 Which of these is needed for the shadow clock? (a) a battery cell (b) a sunny open place (c) turmeric powder (d) a mirror
11. 11.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the time of day is kept the same. (a) True (b) False
12. 12.🔍 Which is the odd one out? (a) clean water (b) clear glass (c) tissue paper (d) clear plastic film
13. 13.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a magnet (b) a straight stick (c) a sunny open place (d) chalk to mark shadows
14. 14.🔍 Which is the odd one out? (a) a steel plate (b) a wooden board (c) frosted glass (d) your hand
15. 15.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a sunny open place (c) a clock to check (d) a balloon
16. 16.🌞 When is a stick’s shadow the shortest? (a) around noon (b) late evening (c) at night (d) early morning
17. 17.⚖️ 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
18. 18.🔦 Which of these is opaque? (a) air (b) a wooden board (c) oily paper (d) clean water
19. 19.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) yeast (c) a sunny open place (d) a straight stick
20. 20.🔦 Is air opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
21. 21.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is kept the same. (a) False (b) True
22. 22.⚖️ 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 measure it (c) we keep it the same
23. 23.🔦 Which of these is translucent? (a) a brick (b) clear plastic film (c) a wooden board (d) tissue paper
24. 24.⚖️ 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
25. 25.⚖️ 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
26. 26.🔦 Is frosted glass opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
27. 27.True or false: tissue paper is translucent. (a) False (b) True
28. 28.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) a straight stick (c) yeast (d) a sunny open place
29. 29.🔍 Which is the odd one out? (a) clear glass (b) oily paper (c) clean water (d) air
30. 30.True or false: a steel plate is translucent. (a) False (b) True
31. 31.🛟 What should you wear for a long time in the hot sun? (a) a cap or hat (b) a raincoat (c) nothing on your head (d) a woollen sweater
32. 32.🔦 Is tissue paper opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
33. 33.🧺 Do we need a straight stick for the shadow clock? (a) not needed (b) needed
34. 34.True or false: butter paper is translucent. (a) False (b) True
35. 35.True or false: frosted glass is translucent. (a) True (b) False
36. 36.🔦 Is your hand opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
37. 37.True or false: yeast is not needed for the shadow clock. (a) True (b) False
38. 38.True or false: a mirror is not needed for the shadow clock. (a) False (b) True
39. 39.🧺 Which of these is needed for the shadow clock? (a) chalk to mark shadows (b) a magnet (c) a battery cell (d) a mirror
40. 40.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is the one thing we change. (a) True (b) False

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