Shadow and Sundial Experiment Worksheet

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

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