Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 384 · 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.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) smaller (b) bigger (c) brighter (d) coloured
2. 2.🌍 Why does the stick’s shadow move during the day? (a) Earth keeps spinning (b) the stick walks (c) the ground slides (d) the stick grows
3. 3.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) a sunny open place (c) a battery cell (d) chalk to mark shadows
4. 4.📘 Why does a shadow form? (a) the object is cold (b) the ground is dark (c) light bends round it (d) an object blocks light
5. 5.🛟 While watching shadows outdoors, what must you never do? (a) sit in the shade (b) mark with chalk (c) look straight at the Sun (d) wear a cap
6. 6.🧺 Do we need a balloon for the shadow clock? (a) needed (b) not needed
7. 7.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) the stick kept upright (b) the time of day (c) shadow length
8. 8.🔦 Is frosted glass opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
9. 9.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) chalk to mark shadows (c) a balloon (d) a clock to check
10. 10.True or false: a wooden board is opaque. (a) False (b) True
11. 11.🔦 Is oily paper opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
12. 12.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a straight stick (c) a battery cell (d) a sunny open place
13. 13.🔦 Which of these is opaque? (a) butter paper (b) a brick (c) air (d) tissue paper
14. 14.🌞 When is a stick’s shadow the shortest? (a) early morning (b) at night (c) late evening (d) around noon
15. 15.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) long (b) round (c) short (d) missing
16. 16.🔮 Predict: on a fully cloudy day, the sundial ___. (a) works better (b) does not work well (c) shows two times (d) runs faster
17. 17.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is kept the same. (a) True (b) False
18. 18.🧺 Do we need a battery cell for the shadow clock? (a) needed (b) not needed
19. 19.⚖️ 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 stick (c) shadow length
20. 20.🔦 Which of these is transparent? (a) a book (b) clean water (c) frosted glass (d) oily paper
21. 21.🧺 Do we need chalk to mark shadows for the shadow clock? (a) not needed (b) needed
22. 22.True or false: yeast is not needed for the shadow clock. (a) False (b) True
23. 23.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) yeast (c) a clock to check (d) chalk to mark shadows
24. 24.🔍 Which is the odd one out? (a) oily paper (b) a wooden board (c) a steel plate (d) a brick
25. 25.⚖️ 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 measure it (c) we keep it the same
26. 26.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is what we measure. (a) False (b) True
27. 27.🧺 Do we need turmeric powder for the shadow clock? (a) not needed (b) needed
28. 28.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is what we measure. (a) False (b) True
29. 29.⚖️ 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
30. 30.⚖️ 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 change it (c) we measure it
31. 31.🕰️ What is a sundial used for? (a) measuring rain (b) making rainbows (c) telling the time (d) weighing things
32. 32.🔍 Which is the odd one out? (a) butter paper (b) frosted glass (c) clean water (d) oily paper
33. 33.🔦 Is a brick opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
34. 34.True or false: tissue paper is translucent. (a) True (b) False
35. 35.🔦 Is air opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
36. 36.🔍 Which is the odd one out? (a) clean water (b) air (c) tissue paper (d) clear plastic film
37. 37.🔍 Which is the odd one out? (a) clear plastic film (b) clean water (c) frosted glass (d) air
38. 38.🛟 What should you wear for a long time in the hot sun? (a) a woollen sweater (b) nothing on your head (c) a cap or hat (d) a raincoat
39. 39.⚖️ 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
40. 40.⚖️ 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) False (b) True

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