Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 324 · 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.📘 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
2. 2.🛟 While watching shadows outdoors, what must you never do? (a) look straight at the Sun (b) mark with chalk (c) wear a cap (d) sit in the shade
3. 3.⚖️ 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
4. 4.🔦 Is frosted glass opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
5. 5.🕰️ What is a sundial used for? (a) weighing things (b) telling the time (c) making rainbows (d) measuring rain
6. 6.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) chalk to mark shadows (c) a battery cell (d) a clock to check
7. 7.True or false: chalk to mark shadows is needed for the shadow clock. (a) False (b) True
8. 8.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is kept the same. (a) False (b) True
9. 9.🛟 What should you wear for a long time in the hot sun? (a) nothing on your head (b) a raincoat (c) a woollen sweater (d) a cap or hat
10. 10.🔮 Predict: on a fully cloudy day, the sundial ___. (a) shows two times (b) does not work well (c) works better (d) runs faster
11. 11.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) a clock to check (c) a sunny open place (d) yeast
12. 12.⚖️ 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 time of day (c) the stick kept upright (d) shadow length
13. 13.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is the one thing we change. (a) True (b) False
14. 14.🔍 Which is the odd one out? (a) a brick (b) frosted glass (c) tissue paper (d) oily paper
15. 15.🔦 Is a steel plate opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
16. 16.🔦 Which of these is transparent? (a) a wooden board (b) a brick (c) clear glass (d) a book
17. 17.🧺 Do we need a clock to check for the shadow clock? (a) not needed (b) needed
18. 18.🔍 Which is the odd one out? (a) clean water (b) clear plastic film (c) air (d) your hand
19. 19.🔦 Which of these is opaque? (a) frosted glass (b) butter paper (c) clear glass (d) a brick
20. 20.🧺 Do we need chalk to mark shadows for the shadow clock? (a) not needed (b) needed
21. 21.⚖️ 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) True (b) False
22. 22.🔦 Which of these is translucent? (a) air (b) oily paper (c) a brick (d) clear plastic film
23. 23.🧺 Which of these is needed for the shadow clock? (a) turmeric powder (b) chalk to mark shadows (c) a magnet (d) a mirror
24. 24.🧺 Which of these is not needed for the shadow clock? (a) a balloon (b) chalk to mark shadows (c) a clock to check (d) a sunny open place
25. 25.🔦 Which of these is transparent? (a) butter paper (b) your hand (c) air (d) frosted glass
26. 26.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) coloured (b) brighter (c) bigger (d) smaller
27. 27.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) turmeric powder (b) a clock to check (c) a sunny open place (d) chalk to mark shadows
28. 28.🔍 Which is the odd one out? (a) clean water (b) a wooden board (c) your hand (d) a book
29. 29.🔦 Which of these is opaque? (a) oily paper (b) tissue paper (c) air (d) a steel plate
30. 30.True or false: a mirror is not needed for the shadow clock. (a) True (b) False
31. 31.🧺 Do we need a straight stick for the shadow clock? (a) needed (b) not needed
32. 32.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) long (b) missing (c) round (d) short
33. 33.⚖️ 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) True (b) False
34. 34.⚖️ 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 change it (c) we keep it the same
35. 35.True or false: a magnet is needed for the shadow clock. (a) True (b) False
36. 36.True or false: a balloon is needed for the shadow clock. (a) False (b) True
37. 37.True or false: your hand is opaque. (a) True (b) False
38. 38.🔦 Which of these is transparent? (a) clear plastic film (b) a book (c) butter paper (d) a brick
39. 39.🧺 Which of these is needed for the shadow clock? (a) a magnet (b) a straight stick (c) turmeric powder (d) a balloon
40. 40.🧺 Which of these is needed for the shadow clock? (a) a clock to check (b) a battery cell (c) yeast (d) a balloon

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