Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 483 · 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.⚖️ 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 keep it the same (c) we measure it
2. 2.🛟 What should you wear for a long time in the hot sun? (a) a woollen sweater (b) a cap or hat (c) a raincoat (d) nothing on your head
3. 3.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) yeast (b) a straight stick (c) a sunny open place (d) a clock to check
4. 4.🔍 Which is the odd one out? (a) a book (b) a wooden board (c) clear plastic film (d) a steel plate
5. 5.True or false: clear glass is transparent. (a) False (b) True
6. 6.⚖️ 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
7. 7.🔮 Predict: on a fully cloudy day, the sundial ___. (a) shows two times (b) runs faster (c) works better (d) does not work well
8. 8.⚖️ 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
9. 9.⚖️ 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 same stick (c) the same spot (d) the stick kept upright
10. 10.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is what we measure. (a) False (b) True
11. 11.True or false: your hand is opaque. (a) True (b) False
12. 12.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) shadow length (b) the same stick (c) the time of day (d) the stick kept upright
13. 13.🧺 Which of these is not needed for the shadow clock? (a) yeast (b) a sunny open place (c) a straight stick (d) a clock to check
14. 14.🧺 Do we need chalk to mark shadows for the shadow clock? (a) not needed (b) needed
15. 15.🕰️ What is a sundial used for? (a) weighing things (b) measuring rain (c) making rainbows (d) telling the time
16. 16.🛟 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
17. 17.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) round (b) missing (c) long (d) short
18. 18.🔦 Is butter paper opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
19. 19.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a balloon (c) chalk to mark shadows (d) a clock to check
20. 20.🔍 Which is the odd one out? (a) butter paper (b) oily paper (c) a book (d) frosted glass
21. 21.True or false: a sunny open place is needed for the shadow clock. (a) False (b) True
22. 22.⚖️ 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
23. 23.True or false: a book is translucent. (a) False (b) True
24. 24.True or false: clean water is transparent. (a) True (b) False
25. 25.🧺 Which of these is needed for the shadow clock? (a) a mirror (b) yeast (c) a clock to check (d) a balloon
26. 26.🧺 Which of these is needed for the shadow clock? (a) yeast (b) a magnet (c) a battery cell (d) a straight stick
27. 27.⚖️ 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
28. 28.🧺 Do we need a magnet for the shadow clock? (a) not needed (b) needed
29. 29.True or false: a balloon is needed for the shadow clock. (a) True (b) False
30. 30.🌞 When is a stick’s shadow the shortest? (a) early morning (b) around noon (c) late evening (d) at night
31. 31.🧺 Which of these is needed for the shadow clock? (a) a balloon (b) a mirror (c) a sunny open place (d) a battery cell
32. 32.True or false: clear glass is opaque. (a) False (b) True
33. 33.True or false: yeast is not needed for the shadow clock. (a) False (b) True
34. 34.⚖️ 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
35. 35.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is kept the same. (a) False (b) True
36. 36.True or false: a wooden board is translucent. (a) True (b) False
37. 37.⚖️ 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) True (b) False
38. 38.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) smaller (b) bigger (c) coloured (d) brighter
39. 39.🧺 Do we need yeast for the shadow clock? (a) not needed (b) needed
40. 40.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the time of day is the one thing we change. (a) True (b) False

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