Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 580 · 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 clock to check (b) chalk to mark shadows (c) a sunny open place (d) turmeric powder
2. 2.🧺 Do we need turmeric powder for the shadow clock? (a) needed (b) not needed
3. 3.🔦 Is clear glass opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
4. 4.True or false: air is transparent. (a) True (b) False
5. 5.📘 Why does a shadow form? (a) the ground is dark (b) an object blocks light (c) light bends round it (d) the object is cold
6. 6.⚖️ 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 measure it (c) we change it
7. 7.True or false: clean water is translucent. (a) True (b) False
8. 8.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the time of day is what we measure. (a) True (b) False
9. 9.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) shadow length (b) the stick kept upright (c) the same spot (d) the time of day
10. 10.🔦 Which of these is transparent? (a) air (b) frosted glass (c) tissue paper (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 change it (b) we measure it (c) we keep it the same
12. 12.⚖️ 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) the same spot (c) shadow length
13. 13.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) yeast (c) a sunny open place (d) chalk to mark shadows
14. 14.🧺 Do we need a sunny open place for the shadow clock? (a) not needed (b) needed
15. 15.True or false: oily paper is opaque. (a) True (b) False
16. 16.🔦 Is tissue paper opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
17. 17.🧺 Do we need yeast for the shadow clock? (a) not needed (b) needed
18. 18.⚖️ 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
19. 19.⚖️ 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
20. 20.🔮 Predict: on a fully cloudy day, the sundial ___. (a) shows two times (b) does not work well (c) runs faster (d) works better
21. 21.True or false: a book is opaque. (a) False (b) True
22. 22.True or false: yeast is needed for the shadow clock. (a) False (b) True
23. 23.🛟 What should you wear for a long time in the hot sun? (a) a cap or hat (b) nothing on your head (c) a woollen sweater (d) a raincoat
24. 24.True or false: a battery cell is not needed for the shadow clock. (a) True (b) False
25. 25.🛟 While watching shadows outdoors, what must you never do? (a) mark with chalk (b) wear a cap (c) sit in the shade (d) look straight at the Sun
26. 26.🔦 Which of these is opaque? (a) frosted glass (b) clear plastic film (c) a brick (d) air
27. 27.🔍 Which is the odd one out? (a) air (b) clear glass (c) clean water (d) a book
28. 28.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) up (b) west (c) north (d) east
29. 29.🌞 When is a stick’s shadow the shortest? (a) around noon (b) at night (c) early morning (d) late evening
30. 30.🌍 Why does the stick’s shadow move during the day? (a) the stick grows (b) the ground slides (c) the stick walks (d) Earth keeps spinning
31. 31.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a mirror (c) a straight stick (d) a clock to check
32. 32.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the stick kept upright is kept the same. (a) False (b) True
33. 33.True or false: a magnet is needed for the shadow clock. (a) False (b) True
34. 34.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a sunny open place (c) a straight stick (d) a magnet
35. 35.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) a straight stick (c) a clock to check (d) a mirror
36. 36.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) long (b) round (c) missing (d) short
37. 37.True or false: a sunny open place is not needed for the shadow clock. (a) False (b) True
38. 38.⚖️ 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
39. 39.🧺 Which of these is needed for the shadow clock? (a) chalk to mark shadows (b) a magnet (c) yeast (d) a mirror
40. 40.🧺 Which of these is needed for the shadow clock? (a) a mirror (b) turmeric powder (c) a sunny open place (d) yeast

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