Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 763 · 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.🔦 Is butter paper opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
2. 2.🔮 Predict: on a fully cloudy day, the sundial ___. (a) works better (b) runs faster (c) shows two times (d) does not work well
3. 3.🧺 Do we need chalk to mark shadows for the shadow clock? (a) needed (b) not needed
4. 4.🧺 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 clock to check
5. 5.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the stick kept upright”? (a) we keep it the same (b) we change it (c) we measure it
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) the stick kept upright (d) shadow length
7. 7.True or false: turmeric powder is needed for the shadow clock. (a) True (b) False
8. 8.🛟 While watching shadows outdoors, what must you never do? (a) wear a cap (b) mark with chalk (c) sit in the shade (d) look straight at the Sun
9. 9.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a magnet (c) a straight stick (d) a sunny open place
10. 10.🔦 Which of these is opaque? (a) frosted glass (b) oily paper (c) a wooden board (d) clear plastic film
11. 11.True or false: a straight stick is not needed for the shadow clock. (a) True (b) False
12. 12.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) north (b) east (c) west (d) up
13. 13.⚖️ 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 time of day (c) shadow length (d) the same stick
14. 14.🧺 Do we need a sunny open place for the shadow clock? (a) not needed (b) needed
15. 15.🕰️ What is a sundial used for? (a) weighing things (b) telling the time (c) making rainbows (d) measuring rain
16. 16.🔍 Which is the odd one out? (a) a steel plate (b) a book (c) a brick (d) butter paper
17. 17.🔦 Which of these is opaque? (a) oily paper (b) frosted glass (c) a book (d) clean water
18. 18.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) smaller (b) bigger (c) brighter (d) coloured
19. 19.🧺 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 straight stick (d) a balloon
20. 20.🧺 Which of these is not needed for the shadow clock? (a) a magnet (b) chalk to mark shadows (c) a clock to check (d) a straight stick
21. 21.True or false: clear plastic film is transparent. (a) False (b) True
22. 22.🌞 When is a stick’s shadow the shortest? (a) late evening (b) at night (c) around noon (d) early morning
23. 23.🔦 Which of these is transparent? (a) a steel plate (b) tissue paper (c) a book (d) air
24. 24.True or false: a battery cell is not needed for the shadow clock. (a) True (b) False
25. 25.True or false: a mirror is not needed for the shadow clock. (a) True (b) False
26. 26.True or false: air is transparent. (a) False (b) True
27. 27.⚖️ 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 change it (c) we keep it the same
28. 28.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a straight stick (c) yeast (d) chalk to mark shadows
29. 29.⚖️ 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
30. 30.🔦 Which of these is opaque? (a) clean water (b) butter paper (c) air (d) your hand
31. 31.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is the one thing we change. (a) False (b) True
32. 32.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) the time of day (b) shadow length (c) the stick kept upright
33. 33.🧺 Do we need a mirror for the shadow clock? (a) not needed (b) needed
34. 34.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is kept the same. (a) True (b) False
35. 35.🔦 Is a wooden board opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
36. 36.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a straight stick (c) a sunny open place (d) a mirror
37. 37.🧺 Do we need a straight stick for the shadow clock? (a) not needed (b) needed
38. 38.🔦 Is a book opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
39. 39.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) long (b) round (c) short (d) missing
40. 40.🧺 Which of these is not needed for the shadow clock? (a) a clock to check (b) a straight stick (c) chalk to mark shadows (d) a mirror

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