Question: What scientific phenomenon is presented in the image?
A. Chemical effect of current (electrolysis of water)
B. Sound is produced by vibration
C. Magnetic effect of current
Clues:
1. A person in a white lab coat is shown inserting two black rods into a glass of clear liquid.
2. The glass is filled with a clear liquid, consistent with water.
3. A close-up shot shows the two black rods submerged in the liquid.
4. There is vigorous bubbling and splashing of the liquid around the two submerged rods.
5. The bubbles are seen rising from the surface of the rods within the liquid.
Answer: B
Category: Physics