Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 1 · 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.🔍 Which is the odd one out? (a) a wooden board (b) a book (c) clear glass (d) your hand
2. 2.True or false: clean water is transparent. (a) False (b) True
3. 3.🔮 Predict: on a fully cloudy day, the sundial ___. (a) works better (b) runs faster (c) shows two times (d) does not work well
4. 4.🛟 What should you wear for a long time in the hot sun? (a) nothing on your head (b) a woollen sweater (c) a raincoat (d) a cap or hat
5. 5.True or false: turmeric powder is needed for the shadow clock. (a) False (b) True
6. 6.🔦 Is a book opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
7. 7.🧺 Which of these is needed for the shadow clock? (a) yeast (b) a balloon (c) a battery cell (d) a clock to check
8. 8.🌍 Why does the stick’s shadow move during the day? (a) the stick grows (b) Earth keeps spinning (c) the stick walks (d) the ground slides
9. 9.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the stick kept upright is the one thing we change. (a) False (b) True
10. 10.🧺 Do we need chalk to mark shadows for the shadow clock? (a) needed (b) not needed
11. 11.🛟 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
12. 12.🔦 Which of these is translucent? (a) a book (b) clear glass (c) butter paper (d) clear plastic film
13. 13.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) a battery cell (c) chalk to mark shadows (d) a straight stick
14. 14.🧺 Which of these is not needed for the shadow clock? (a) a mirror (b) a clock to check (c) chalk to mark shadows (d) a straight stick
15. 15.🔦 Is a steel plate opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
16. 16.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the time of day”? (a) we keep it the same (b) we change it (c) we measure it
17. 17.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) brighter (b) bigger (c) smaller (d) coloured
18. 18.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) the time of day (b) shadow length (c) the same stick (d) the stick kept upright
19. 19.🧺 Do we need turmeric powder for the shadow clock? (a) not needed (b) needed
20. 20.⚖️ 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
21. 21.True or false: a balloon is needed for the shadow clock. (a) False (b) True
22. 22.🌞 When is a stick’s shadow the shortest? (a) early morning (b) late evening (c) around noon (d) at night
23. 23.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the stick kept upright”? (a) we change it (b) we keep it the same (c) we measure it
24. 24.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a balloon (c) chalk to mark shadows (d) a clock to check
25. 25.🔦 Which of these is transparent? (a) clear plastic film (b) a book (c) tissue paper (d) your hand
26. 26.🔦 Which of these is opaque? (a) a book (b) oily paper (c) frosted glass (d) clean water
27. 27.⚖️ 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
28. 28.⚖️ 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) True (b) False
29. 29.🧺 Which of these is needed for the shadow clock? (a) turmeric powder (b) a magnet (c) a sunny open place (d) a mirror
30. 30.🧺 Do we need a balloon for the shadow clock? (a) not needed (b) needed
31. 31.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is what we measure. (a) False (b) True
32. 32.⚖️ 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
33. 33.🔦 Which of these is translucent? (a) clean water (b) tissue paper (c) a steel plate (d) a book
34. 34.🧺 Which of these is not needed for the shadow clock? (a) a clock to check (b) a sunny open place (c) a straight stick (d) yeast
35. 35.True or false: a wooden board is translucent. (a) True (b) False
36. 36.⚖️ 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 same stick (c) the stick kept upright (d) the time of day
37. 37.🧺 Do we need a sunny open place for the shadow clock? (a) not needed (b) needed
38. 38.🔍 Which is the odd one out? (a) tissue paper (b) a brick (c) frosted glass (d) butter paper
39. 39.🧺 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) turmeric powder (d) a straight stick
40. 40.🧺 Do we need yeast for the shadow clock? (a) not needed (b) needed

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