Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 706 · 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.🧺 Do we need a battery cell for the shadow clock? (a) needed (b) not needed
2. 2.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) brighter (b) bigger (c) smaller (d) coloured
3. 3.True or false: frosted glass is transparent. (a) False (b) True
4. 4.🔦 Which of these is transparent? (a) clear glass (b) butter paper (c) oily paper (d) your hand
5. 5.⚖️ 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
6. 6.🔦 Is air opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
7. 7.🧺 Do we need a straight stick for the shadow clock? (a) not needed (b) needed
8. 8.True or false: a straight stick is not needed for the shadow clock. (a) True (b) False
9. 9.True or false: yeast is not needed for the shadow clock. (a) True (b) False
10. 10.🔦 Is oily paper opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
11. 11.🔦 Which of these is translucent? (a) clean water (b) a steel plate (c) butter paper (d) air
12. 12.🔦 Which of these is transparent? (a) a wooden board (b) a brick (c) tissue paper (d) clean water
13. 13.🔦 Is a book opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
14. 14.🌞 When is a stick’s shadow the shortest? (a) early morning (b) around noon (c) at night (d) late evening
15. 15.🕰️ What is a sundial used for? (a) measuring rain (b) telling the time (c) making rainbows (d) weighing things
16. 16.True or false: a wooden board is transparent. (a) True (b) False
17. 17.⚖️ 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 stick kept upright (c) the time of day (d) shadow length
18. 18.🧺 Which of these is needed for the shadow clock? (a) a mirror (b) a battery cell (c) chalk to mark shadows (d) a balloon
19. 19.🔦 Which of these is translucent? (a) a steel plate (b) air (c) tissue paper (d) a brick
20. 20.🧺 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) turmeric powder (d) a clock to check
21. 21.🔍 Which is the odd one out? (a) tissue paper (b) butter paper (c) oily paper (d) a book
22. 22.🧺 Which of these is needed for the shadow clock? (a) a mirror (b) a straight stick (c) a magnet (d) turmeric powder
23. 23.True or false: a clock to check is not needed for the shadow clock. (a) False (b) True
24. 24.⚖️ 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
25. 25.🧺 Do we need a clock to check for the shadow clock? (a) needed (b) not needed
26. 26.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) short (b) missing (c) round (d) long
27. 27.📘 Why does a shadow form? (a) the ground is dark (b) the object is cold (c) light bends round it (d) an object blocks light
28. 28.🔦 Which of these is translucent? (a) clean water (b) a wooden board (c) frosted glass (d) clear glass
29. 29.🛟 What should you wear for a long time in the hot sun? (a) a woollen sweater (b) a cap or hat (c) nothing on your head (d) a raincoat
30. 30.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) west (b) east (c) north (d) up
31. 31.🔮 Predict: on a fully cloudy day, the sundial ___. (a) does not work well (b) works better (c) shows two times (d) runs faster
32. 32.🔦 Is a steel plate opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
33. 33.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) chalk to mark shadows (c) a balloon (d) a sunny open place
34. 34.🔍 Which is the odd one out? (a) a book (b) a wooden board (c) a brick (d) tissue paper
35. 35.🌍 Why does the stick’s shadow move during the day? (a) the ground slides (b) the stick grows (c) Earth keeps spinning (d) the stick walks
36. 36.⚖️ 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) False (b) True
37. 37.⚖️ 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
38. 38.🛟 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
39. 39.🔦 Is butter paper opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
40. 40.🔦 Which of these is translucent? (a) clear glass (b) clear plastic film (c) a book (d) oily paper

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