Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 543 · 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.🌍 Why does the stick’s shadow move during the day? (a) the ground slides (b) the stick grows (c) Earth keeps spinning (d) the stick walks
2. 2.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a clock to check (c) a balloon (d) chalk to mark shadows
3. 3.⚖️ 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) False (b) True
4. 4.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) coloured (b) brighter (c) bigger (d) smaller
5. 5.True or false: clear plastic film is transparent. (a) True (b) False
6. 6.🧺 Do we need a battery cell for the shadow clock? (a) needed (b) not needed
7. 7.🕰️ What is a sundial used for? (a) making rainbows (b) measuring rain (c) weighing things (d) telling the time
8. 8.🔦 Is a book opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
9. 9.🔍 Which is the odd one out? (a) frosted glass (b) clear plastic film (c) oily paper (d) butter paper
10. 10.🔍 Which is the odd one out? (a) clean water (b) tissue paper (c) clear glass (d) clear plastic film
11. 11.🔍 Which is the odd one out? (a) clear glass (b) a book (c) air (d) clear plastic film
12. 12.🛟 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
13. 13.🧺 Do we need chalk to mark shadows for the shadow clock? (a) not needed (b) needed
14. 14.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a clock to check (c) yeast (d) a straight stick
15. 15.⚖️ 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
16. 16.🧺 Do we need a balloon for the shadow clock? (a) needed (b) not needed
17. 17.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a battery cell (c) a clock to check (d) a sunny open place
18. 18.🔦 Is clean water opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
19. 19.True or false: a mirror is needed for the shadow clock. (a) True (b) False
20. 20.🧺 Do we need a clock to check for the shadow clock? (a) not needed (b) needed
21. 21.🔮 Predict: on a fully cloudy day, the sundial ___. (a) works better (b) does not work well (c) shows two times (d) runs faster
22. 22.🌞 When is a stick’s shadow the shortest? (a) around noon (b) early morning (c) late evening (d) at night
23. 23.⚖️ 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
24. 24.🧺 Which of these is needed for the shadow clock? (a) a magnet (b) turmeric powder (c) a sunny open place (d) yeast
25. 25.True or false: turmeric powder is not needed for the shadow clock. (a) False (b) True
26. 26.🧺 Do we need a magnet for the shadow clock? (a) not needed (b) needed
27. 27.True or false: a straight stick is not needed for the shadow clock. (a) True (b) False
28. 28.⚖️ 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
29. 29.True or false: a sunny open place is not needed for the shadow clock. (a) False (b) True
30. 30.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) chalk to mark shadows (c) a sunny open place (d) turmeric powder
31. 31.🔦 Which of these is opaque? (a) oily paper (b) air (c) your hand (d) butter paper
32. 32.⚖️ 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
33. 33.🔦 Is your hand opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
34. 34.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is what we measure. (a) True (b) False
35. 35.⚖️ 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) the stick kept upright (c) the time of day (d) shadow length
36. 36.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) chalk to mark shadows (c) a clock to check (d) a magnet
37. 37.True or false: a brick is translucent. (a) True (b) False
38. 38.🔦 Which of these is transparent? (a) a brick (b) oily paper (c) clean water (d) butter paper
39. 39.🧺 Which of these is needed for the shadow clock? (a) turmeric powder (b) a balloon (c) a straight stick (d) a magnet
40. 40.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) the time of day (b) the stick kept upright (c) the same spot (d) shadow length

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