Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 703 · 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 of these is not needed for the shadow clock? (a) a straight stick (b) a mirror (c) a sunny open place (d) chalk to mark shadows
2. 2.🔍 Which is the odd one out? (a) clear glass (b) a brick (c) clear plastic film (d) clean water
3. 3.🔦 Is clean water opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
4. 4.⚖️ 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 time of day (d) the stick kept upright
5. 5.⚖️ 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 time of day (c) shadow length (d) the same stick
6. 6.🔍 Which is the odd one out? (a) a brick (b) a book (c) tissue paper (d) a wooden board
7. 7.True or false: a sunny open place is needed for the shadow clock. (a) True (b) False
8. 8.🧺 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 balloon
9. 9.⚖️ 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
10. 10.🔍 Which is the odd one out? (a) tissue paper (b) frosted glass (c) a wooden board (d) oily paper
11. 11.⚖️ 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
12. 12.🧺 Do we need a clock to check for the shadow clock? (a) not needed (b) needed
13. 13.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) missing (b) short (c) round (d) long
14. 14.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “shadow length”? (a) we keep it the same (b) we measure it (c) we change it
15. 15.True or false: chalk to mark shadows is needed for the shadow clock. (a) True (b) False
16. 16.🧺 Do we need a magnet for the shadow clock? (a) needed (b) not needed
17. 17.🔦 Is a wooden board opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
18. 18.🔍 Which is the odd one out? (a) oily paper (b) clear glass (c) air (d) clean water
19. 19.🔮 Predict: on a fully cloudy day, the sundial ___. (a) shows two times (b) works better (c) runs faster (d) does not work well
20. 20.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) west (b) north (c) east (d) up
21. 21.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) shadow length (b) the time of day (c) the same spot
22. 22.True or false: air is opaque. (a) False (b) True
23. 23.🧺 Do we need turmeric powder for the shadow clock? (a) needed (b) not needed
24. 24.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) a sunny open place (c) a magnet (d) chalk to mark shadows
25. 25.🧺 Do we need yeast for the shadow clock? (a) not needed (b) needed
26. 26.True or false: a brick is translucent. (a) True (b) False
27. 27.True or false: a book is transparent. (a) False (b) True
28. 28.True or false: a wooden board is translucent. (a) False (b) True
29. 29.🛟 While watching shadows outdoors, what must you never do? (a) mark with chalk (b) sit in the shade (c) look straight at the Sun (d) wear a cap
30. 30.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) brighter (b) bigger (c) coloured (d) smaller
31. 31.True or false: a straight stick is needed for the shadow clock. (a) False (b) True
32. 32.True or false: a mirror is needed for the shadow clock. (a) False (b) True
33. 33.🧺 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 magnet (d) a sunny open place
34. 34.🔍 Which is the odd one out? (a) frosted glass (b) clean water (c) butter paper (d) tissue paper
35. 35.True or false: oily paper is opaque. (a) False (b) True
36. 36.⚖️ 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
37. 37.🧺 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 straight stick (d) a clock to check
38. 38.🕰️ What is a sundial used for? (a) making rainbows (b) weighing things (c) measuring rain (d) telling the time
39. 39.True or false: clean water is transparent. (a) True (b) False
40. 40.⚖️ 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

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