Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 738 · 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? True or false: the time of day is the one thing we change. (a) False (b) True
2. 2.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a mirror (c) chalk to mark shadows (d) a straight stick
3. 3.🔦 Is clear plastic film opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
4. 4.🔦 Which of these is transparent? (a) clean water (b) a book (c) a brick (d) your hand
5. 5.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “shadow length”? (a) we measure it (b) we keep it the same (c) we change it
6. 6.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a balloon (b) a sunny open place (c) a clock to check (d) chalk to mark shadows
7. 7.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) the same stick (b) the stick kept upright (c) shadow length (d) the same spot
8. 8.⚖️ 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
9. 9.⚖️ 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
10. 10.🔍 Which is the odd one out? (a) clear plastic film (b) clear glass (c) a book (d) clean water
11. 11.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) a straight stick (c) a battery cell (d) a clock to check
12. 12.🧺 Which of these is needed for the shadow clock? (a) a magnet (b) turmeric powder (c) a battery cell (d) a straight stick
13. 13.🧺 Do we need a straight stick for the shadow clock? (a) not needed (b) needed
14. 14.🧺 Which of these is needed for the shadow clock? (a) turmeric powder (b) chalk to mark shadows (c) a magnet (d) a battery cell
15. 15.🔦 Is your hand opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
16. 16.⚖️ 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
17. 17.🧺 Which of these is needed for the shadow clock? (a) a magnet (b) turmeric powder (c) a battery cell (d) a clock to check
18. 18.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a clock to check (c) a sunny open place (d) a battery cell
19. 19.True or false: your hand is opaque. (a) True (b) False
20. 20.🔮 Predict: on a fully cloudy day, the sundial ___. (a) runs faster (b) does not work well (c) works better (d) shows two times
21. 21.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) a balloon (c) a straight stick (d) a clock to check
22. 22.🌞 When is a stick’s shadow the shortest? (a) around noon (b) early morning (c) late evening (d) at night
23. 23.True or false: a book is opaque. (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 time of day”? (a) we measure it (b) we keep it the same (c) we change it
25. 25.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) the stick kept upright (b) the same stick (c) shadow length (d) the time of day
26. 26.🔦 Which of these is transparent? (a) butter paper (b) air (c) a wooden board (d) frosted glass
27. 27.🔍 Which is the odd one out? (a) clean water (b) a brick (c) clear plastic film (d) clear glass
28. 28.⚖️ 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
29. 29.🛟 What should you wear for a long time in the hot sun? (a) nothing on your head (b) a raincoat (c) a woollen sweater (d) a cap or hat
30. 30.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) chalk to mark shadows (c) yeast (d) a sunny open place
31. 31.🧺 Which of these is needed for the shadow clock? (a) yeast (b) a battery cell (c) turmeric powder (d) a sunny open place
32. 32.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a magnet (c) a clock to check (d) a straight stick
33. 33.🔍 Which is the odd one out? (a) a book (b) air (c) a steel plate (d) a wooden board
34. 34.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) coloured (b) bigger (c) brighter (d) smaller
35. 35.True or false: a balloon is needed for the shadow clock. (a) True (b) False
36. 36.⚖️ 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 change it (c) we keep it the same
37. 37.True or false: a sunny open place is not needed for the shadow clock. (a) True (b) False
38. 38.True or false: a brick is transparent. (a) False (b) True
39. 39.🔦 Is frosted glass opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
40. 40.🛟 While watching shadows outdoors, what must you never do? (a) mark with chalk (b) look straight at the Sun (c) wear a cap (d) sit in the shade

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