Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 312 · 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.⚖️ 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
2. 2.⚖️ 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
3. 3.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) the same stick (b) the stick kept upright (c) shadow length (d) the time of day
4. 4.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the stick kept upright is what we measure. (a) True (b) False
5. 5.⚖️ 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
6. 6.🛟 While watching shadows outdoors, what must you never do? (a) look straight at the Sun (b) mark with chalk (c) sit in the shade (d) wear a cap
7. 7.🔮 Predict: on a fully cloudy day, the sundial ___. (a) works better (b) runs faster (c) does not work well (d) shows two times
8. 8.🔦 Which of these is opaque? (a) clean water (b) air (c) a brick (d) oily paper
9. 9.🔦 Which of these is transparent? (a) a wooden board (b) tissue paper (c) clear plastic film (d) butter paper
10. 10.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) long (b) missing (c) short (d) round
11. 11.🧺 Do we need yeast for the shadow clock? (a) needed (b) not needed
12. 12.🔦 Which of these is transparent? (a) a book (b) frosted glass (c) clean water (d) tissue paper
13. 13.🧺 Do we need a balloon for the shadow clock? (a) needed (b) not needed
14. 14.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) smaller (b) coloured (c) brighter (d) bigger
15. 15.True or false: a sunny open place is not needed for the shadow clock. (a) False (b) True
16. 16.🔍 Which is the odd one out? (a) butter paper (b) a steel plate (c) tissue paper (d) frosted glass
17. 17.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the stick kept upright is the one thing we change. (a) True (b) False
18. 18.🧺 Do we need turmeric powder for the shadow clock? (a) not needed (b) needed
19. 19.🔦 Is clean water opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
20. 20.🔍 Which is the odd one out? (a) a brick (b) a wooden board (c) oily paper (d) a book
21. 21.True or false: a battery cell is needed for the shadow clock. (a) False (b) True
22. 22.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is kept the same. (a) True (b) False
23. 23.True or false: a mirror is not needed for the shadow clock. (a) False (b) True
24. 24.🧺 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) a straight stick (d) yeast
25. 25.True or false: yeast is not needed for the shadow clock. (a) False (b) True
26. 26.🔦 Which of these is transparent? (a) a steel plate (b) butter paper (c) clear glass (d) a book
27. 27.⚖️ 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
28. 28.True or false: clear plastic film is opaque. (a) False (b) True
29. 29.📘 Why does a shadow form? (a) the ground is dark (b) an object blocks light (c) the object is cold (d) light bends round it
30. 30.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is kept the same. (a) False (b) True
31. 31.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a straight stick (c) a sunny open place (d) a magnet
32. 32.🔦 Which of these is opaque? (a) tissue paper (b) clean water (c) a steel plate (d) clear glass
33. 33.🌞 When is a stick’s shadow the shortest? (a) around noon (b) late evening (c) early morning (d) at night
34. 34.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a magnet (b) chalk to mark shadows (c) a straight stick (d) a clock to check
35. 35.🌍 Why does the stick’s shadow move during the day? (a) the stick walks (b) the stick grows (c) the ground slides (d) Earth keeps spinning
36. 36.🛟 What should you wear for a long time in the hot sun? (a) nothing on your head (b) a woollen sweater (c) a raincoat (d) a cap or hat
37. 37.⚖️ 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
38. 38.⚖️ 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 change it (c) we measure it
39. 39.True or false: a brick is opaque. (a) False (b) True
40. 40.🧺 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 mirror (d) a clock to check

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