Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 141 · 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.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) missing (b) round (c) long (d) short
2. 2.🔦 Is your hand opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
3. 3.True or false: a clock to check is needed for the shadow clock. (a) True (b) False
4. 4.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) smaller (b) brighter (c) coloured (d) bigger
5. 5.🔦 Is clear glass opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
6. 6.🔦 Which of these is transparent? (a) a steel plate (b) tissue paper (c) frosted glass (d) clear plastic film
7. 7.⚖️ 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
8. 8.🛟 What should you wear for a long time in the hot sun? (a) a cap or hat (b) a woollen sweater (c) a raincoat (d) nothing on your head
9. 9.🧺 Do we need a magnet for the shadow clock? (a) needed (b) not needed
10. 10.🔦 Is air opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
11. 11.🔮 Predict: on a fully cloudy day, the sundial ___. (a) works better (b) does not work well (c) runs faster (d) shows two times
12. 12.🔦 Which of these is translucent? (a) clean water (b) your hand (c) clear glass (d) butter paper
13. 13.🧺 Do we need chalk to mark shadows for the shadow clock? (a) not needed (b) needed
14. 14.🔦 Which of these is opaque? (a) clear glass (b) a book (c) clear plastic film (d) air
15. 15.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) yeast (c) a clock to check (d) a straight stick
16. 16.🔦 Which of these is opaque? (a) air (b) a brick (c) clear glass (d) clear plastic film
17. 17.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a straight stick (c) a clock to check (d) a balloon
18. 18.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a straight stick (c) a battery cell (d) a clock to check
19. 19.True or false: a balloon is needed for the shadow clock. (a) False (b) True
20. 20.True or false: a straight stick is not needed for the shadow clock. (a) False (b) True
21. 21.🧺 Which of these is not needed for the shadow clock? (a) a clock to check (b) yeast (c) a straight stick (d) a sunny open place
22. 22.🛟 While watching shadows outdoors, what must you never do? (a) wear a cap (b) sit in the shade (c) look straight at the Sun (d) mark with chalk
23. 23.True or false: chalk to mark shadows is not needed for the shadow clock. (a) True (b) False
24. 24.⚖️ 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
25. 25.⚖️ 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
26. 26.⚖️ 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 stick kept upright (c) shadow length
27. 27.🔦 Is frosted glass opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
28. 28.True or false: air is transparent. (a) False (b) True
29. 29.🧺 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 sunny open place (d) a magnet
30. 30.🔦 Which of these is transparent? (a) a book (b) a brick (c) air (d) oily paper
31. 31.📘 Why does a shadow form? (a) the ground is dark (b) the object is cold (c) an object blocks light (d) light bends round it
32. 32.True or false: a balloon is not needed for the shadow clock. (a) False (b) True
33. 33.🔦 Is a book opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
34. 34.⚖️ 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
35. 35.⚖️ 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) shadow length (c) the same stick
36. 36.⚖️ 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) shadow length (c) the stick kept upright (d) the time of day
37. 37.🌞 When is a stick’s shadow the shortest? (a) early morning (b) around noon (c) at night (d) late evening
38. 38.🔍 Which is the odd one out? (a) a book (b) a wooden board (c) a brick (d) clear plastic film
39. 39.🧺 Do we need a sunny open place for the shadow clock? (a) needed (b) not needed
40. 40.🕰️ What is a sundial used for? (a) weighing things (b) measuring rain (c) making rainbows (d) telling the time

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