Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 453 · 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 battery cell (b) chalk to mark shadows (c) a straight stick (d) a clock to check
2. 2.🧺 Do we need a straight stick for the shadow clock? (a) not needed (b) needed
3. 3.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a magnet (c) chalk to mark shadows (d) a straight stick
4. 4.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) chalk to mark shadows (c) a mirror (d) a clock to check
5. 5.🧺 Do we need a battery cell for the shadow clock? (a) needed (b) not needed
6. 6.⚖️ 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) the same spot (c) shadow length (d) the stick kept upright
7. 7.True or false: a mirror is not needed for the shadow clock. (a) False (b) True
8. 8.🔦 Is clear plastic film opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
9. 9.True or false: clear glass is opaque. (a) True (b) False
10. 10.🧺 Do we need a magnet for the shadow clock? (a) needed (b) not needed
11. 11.🧺 Which of these is needed for the shadow clock? (a) yeast (b) turmeric powder (c) a mirror (d) chalk to mark shadows
12. 12.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) short (b) long (c) missing (d) round
13. 13.🧺 Do we need chalk to mark shadows for the shadow clock? (a) not needed (b) needed
14. 14.⚖️ 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) shadow length (c) the time of day
15. 15.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same stick”? (a) we keep it the same (b) we change it (c) we measure it
16. 16.🔍 Which is the odd one out? (a) a book (b) frosted glass (c) a wooden board (d) a brick
17. 17.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) smaller (b) bigger (c) brighter (d) coloured
18. 18.True or false: air is transparent. (a) False (b) True
19. 19.⚖️ 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 same stick (c) the same spot (d) the stick kept upright
20. 20.True or false: a book is transparent. (a) True (b) False
21. 21.🔦 Which of these is opaque? (a) butter paper (b) clear plastic film (c) clear glass (d) your hand
22. 22.True or false: frosted glass is translucent. (a) False (b) True
23. 23.🌞 When is a stick’s shadow the shortest? (a) early morning (b) around noon (c) at night (d) late evening
24. 24.🛟 While watching shadows outdoors, what must you never do? (a) sit in the shade (b) wear a cap (c) mark with chalk (d) look straight at the Sun
25. 25.🔦 Which of these is transparent? (a) clean water (b) a steel plate (c) butter paper (d) a wooden board
26. 26.🔦 Which of these is translucent? (a) clean water (b) oily paper (c) clear glass (d) a book
27. 27.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) turmeric powder (c) chalk to mark shadows (d) a clock to check
28. 28.⚖️ 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
29. 29.🔮 Predict: on a fully cloudy day, the sundial ___. (a) does not work well (b) shows two times (c) works better (d) runs faster
30. 30.🔍 Which is the odd one out? (a) clear glass (b) air (c) clear plastic film (d) a book
31. 31.⚖️ 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 measure it (c) we keep it the same
32. 32.🧺 Do we need a clock to check for the shadow clock? (a) not needed (b) needed
33. 33.🛟 What should you wear for a long time in the hot sun? (a) a woollen sweater (b) a raincoat (c) a cap or hat (d) nothing on your head
34. 34.⚖️ 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 keep it the same (c) we measure it
35. 35.🔍 Which is the odd one out? (a) frosted glass (b) butter paper (c) clear glass (d) tissue paper
36. 36.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) a balloon (c) a clock to check (d) chalk to mark shadows
37. 37.🔍 Which is the odd one out? (a) clean water (b) clear glass (c) tissue paper (d) clear plastic film
38. 38.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a sunny open place (c) yeast (d) a straight stick
39. 39.⚖️ 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
40. 40.🔦 Which of these is opaque? (a) butter paper (b) oily paper (c) clean water (d) a book

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