Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 406 · 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.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a mirror (b) a straight stick (c) a sunny open place (d) chalk to mark shadows
2. 2.🧺 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 magnet (d) a straight stick
3. 3.⚖️ 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
4. 4.True or false: a battery cell is needed for the shadow clock. (a) True (b) False
5. 5.🧺 Which of these is not needed for the shadow clock? (a) a clock to check (b) yeast (c) chalk to mark shadows (d) a straight stick
6. 6.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) chalk to mark shadows (c) a battery cell (d) a straight stick
7. 7.🧺 Do we need yeast for the shadow clock? (a) not needed (b) needed
8. 8.🛟 What should you wear for a long time in the hot sun? (a) a woollen sweater (b) a raincoat (c) nothing on your head (d) a cap or hat
9. 9.🔍 Which is the odd one out? (a) oily paper (b) butter paper (c) a wooden board (d) frosted glass
10. 10.⚖️ 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) False (b) True
11. 11.🔍 Which is the odd one out? (a) a wooden board (b) a steel plate (c) clear glass (d) a brick
12. 12.🧺 Do we need a straight stick for the shadow clock? (a) not needed (b) needed
13. 13.🧺 Which of these is not needed for the shadow clock? (a) a clock to check (b) a mirror (c) a sunny open place (d) chalk to mark shadows
14. 14.🔮 Predict: on a fully cloudy day, the sundial ___. (a) works better (b) shows two times (c) does not work well (d) runs faster
15. 15.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) bigger (b) brighter (c) smaller (d) coloured
16. 16.⚖️ 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) False (b) True
17. 17.True or false: air is transparent. (a) False (b) True
18. 18.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) round (b) short (c) missing (d) long
19. 19.🔦 Which of these is translucent? (a) clear glass (b) a book (c) your hand (d) butter paper
20. 20.True or false: chalk to mark shadows is needed for the shadow clock. (a) False (b) True
21. 21.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same spot”? (a) we keep it the same (b) we change it (c) we measure it
22. 22.🔦 Is frosted glass opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
23. 23.⚖️ 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
24. 24.🧺 Do we need turmeric powder for the shadow clock? (a) not needed (b) needed
25. 25.🔦 Which of these is opaque? (a) a brick (b) frosted glass (c) clear plastic film (d) oily paper
26. 26.🧺 Which of these is not needed for the shadow clock? (a) a clock to check (b) a sunny open place (c) chalk to mark shadows (d) a magnet
27. 27.True or false: chalk to mark shadows is not needed for the shadow clock. (a) True (b) False
28. 28.True or false: turmeric powder is needed for the shadow clock. (a) True (b) False
29. 29.🧺 Do we need a sunny open place for the shadow clock? (a) needed (b) not needed
30. 30.⚖️ 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
31. 31.True or false: a balloon is needed for the shadow clock. (a) False (b) True
32. 32.⚖️ 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
33. 33.🧺 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 clock to check
34. 34.🔍 Which is the odd one out? (a) clean water (b) a brick (c) a steel plate (d) your hand
35. 35.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) the same spot (b) the stick kept upright (c) the time of day (d) the same stick
36. 36.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) the same stick (b) shadow length (c) the time of day
37. 37.🔦 Is clear plastic film opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
38. 38.True or false: a brick is opaque. (a) False (b) True
39. 39.🔦 Which of these is opaque? (a) clean water (b) oily paper (c) a book (d) air
40. 40.⚖️ 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

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