Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 903 · 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 opaque? (a) clear glass (b) butter paper (c) oily paper (d) your hand
2. 2.🔦 Is a steel plate opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
3. 3.⚖️ 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 same stick
4. 4.⚖️ 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 time of day (c) the same stick (d) the stick kept upright
5. 5.📘 Why does a shadow form? (a) the object is cold (b) light bends round it (c) the ground is dark (d) an object blocks light
6. 6.🔦 Which of these is opaque? (a) a book (b) clear glass (c) frosted glass (d) oily paper
7. 7.🧺 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 clock to check (d) yeast
8. 8.🧺 Do we need a clock to check for the shadow clock? (a) not needed (b) needed
9. 9.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a balloon (b) a sunny open place (c) a clock to check (d) chalk to mark shadows
10. 10.🧺 Do we need a straight stick for the shadow clock? (a) not needed (b) needed
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 keep it the same (c) we change it
12. 12.🧺 Which of these is needed for the shadow clock? (a) a mirror (b) a battery cell (c) a magnet (d) chalk to mark shadows
13. 13.True or false: a battery cell is not needed for the shadow clock. (a) True (b) False
14. 14.🔦 Is oily paper opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
15. 15.🛟 What should you wear for a long time in the hot sun? (a) a woollen sweater (b) a raincoat (c) nothing on your head (d) a cap or hat
16. 16.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) short (b) missing (c) round (d) long
17. 17.🧺 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 magnet
18. 18.🔍 Which is the odd one out? (a) a steel plate (b) clear plastic film (c) clear glass (d) air
19. 19.🔦 Is your hand opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
20. 20.🔦 Is a brick opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
21. 21.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) coloured (b) brighter (c) bigger (d) smaller
22. 22.🧺 Do we need yeast for the shadow clock? (a) not needed (b) needed
23. 23.🧺 Do we need chalk to mark shadows for the shadow clock? (a) needed (b) not needed
24. 24.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) a mirror (c) a clock to check (d) a straight stick
25. 25.🌍 Why does the stick’s shadow move during the day? (a) the stick walks (b) Earth keeps spinning (c) the ground slides (d) the stick grows
26. 26.🔦 Which of these is transparent? (a) a book (b) frosted glass (c) tissue paper (d) clean water
27. 27.⚖️ 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 measure it (c) we change it
28. 28.True or false: a wooden board is opaque. (a) True (b) False
29. 29.True or false: tissue paper is opaque. (a) False (b) True
30. 30.⚖️ 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
31. 31.🔍 Which is the odd one out? (a) clean water (b) a wooden board (c) clear plastic film (d) air
32. 32.🛟 While watching shadows outdoors, what must you never do? (a) sit in the shade (b) look straight at the Sun (c) wear a cap (d) mark with chalk
33. 33.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “shadow length”? (a) we change it (b) we measure it (c) we keep it the same
34. 34.🧺 Do we need a balloon for the shadow clock? (a) not needed (b) needed
35. 35.🔮 Predict: on a fully cloudy day, the sundial ___. (a) runs faster (b) shows two times (c) works better (d) does not work well
36. 36.🧺 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) turmeric powder
37. 37.🔦 Which of these is opaque? (a) frosted glass (b) tissue paper (c) clear glass (d) a steel plate
38. 38.⚖️ 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 same spot (c) the time of day
39. 39.True or false: a magnet is not needed for the shadow clock. (a) True (b) False
40. 40.🔦 Is clean water opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent

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