Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 526 · 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.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) yeast (c) a clock to check (d) chalk to mark shadows
2. 2.True or false: your hand is opaque. (a) False (b) True
3. 3.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) the same stick (b) the stick kept upright (c) the time of day (d) the same spot
4. 4.⚖️ 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
5. 5.🛟 While watching shadows outdoors, what must you never do? (a) wear a cap (b) look straight at the Sun (c) mark with chalk (d) sit in the shade
6. 6.🛟 What should you wear for a long time in the hot sun? (a) a raincoat (b) nothing on your head (c) a cap or hat (d) a woollen sweater
7. 7.🧺 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 straight stick (d) a mirror
8. 8.🧺 Do we need a balloon for the shadow clock? (a) needed (b) not needed
9. 9.True or false: chalk to mark shadows is not needed for the shadow clock. (a) True (b) False
10. 10.🌍 Why does the stick’s shadow move during the day? (a) the ground slides (b) the stick walks (c) the stick grows (d) Earth keeps spinning
11. 11.True or false: a battery cell is needed for the shadow clock. (a) False (b) True
12. 12.True or false: a sunny open place is not needed for the shadow clock. (a) True (b) False
13. 13.🔦 Is air opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
14. 14.🧺 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 clock to check (d) a battery cell
15. 15.🔦 Is a steel plate opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
16. 16.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a magnet (b) chalk to mark shadows (c) a sunny open place (d) a clock to check
17. 17.🔦 Which of these is opaque? (a) air (b) oily paper (c) a steel plate (d) clear plastic film
18. 18.⚖️ 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
19. 19.🔍 Which is the odd one out? (a) a wooden board (b) a book (c) air (d) a brick
20. 20.🔦 Is oily paper opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
21. 21.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the time of day”? (a) we measure it (b) we change it (c) we keep it the same
22. 22.⚖️ 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
23. 23.True or false: air is opaque. (a) False (b) True
24. 24.True or false: a magnet is not needed for the shadow clock. (a) False (b) True
25. 25.🔮 Predict: on a fully cloudy day, the sundial ___. (a) works better (b) does not work well (c) runs faster (d) shows two times
26. 26.📘 Why does a shadow form? (a) the object is cold (b) the ground is dark (c) an object blocks light (d) light bends round it
27. 27.⚖️ 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
28. 28.True or false: a clock to check is needed for the shadow clock. (a) True (b) False
29. 29.🔦 Which of these is transparent? (a) clear plastic film (b) tissue paper (c) a steel plate (d) butter paper
30. 30.🧺 Which of these is needed for the shadow clock? (a) a magnet (b) a battery cell (c) turmeric powder (d) a sunny open place
31. 31.🔦 Is your hand opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
32. 32.🧺 Do we need a straight stick for the shadow clock? (a) not needed (b) needed
33. 33.True or false: a clock to check is not needed for the shadow clock. (a) False (b) True
34. 34.⚖️ 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
35. 35.🧺 Which of these is needed for the shadow clock? (a) yeast (b) a balloon (c) chalk to mark shadows (d) a battery cell
36. 36.True or false: tissue paper is opaque. (a) False (b) True
37. 37.🔦 Which of these is opaque? (a) clear plastic film (b) frosted glass (c) clean water (d) a book
38. 38.🕰️ What is a sundial used for? (a) measuring rain (b) weighing things (c) telling the time (d) making rainbows
39. 39.🔦 Is clear glass opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
40. 40.🔍 Which is the odd one out? (a) clean water (b) a book (c) your hand (d) a brick

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