Final answer:
When a cavitation bubble collapses, it releases a shockwave and heat. Water pressure increases in the region of collapse. The intensity of the implosion can be measured using a hydrophone.
Step-by-step explanation:
When a cavitation bubble collapses, it releases a shockwave and gives off heat. Additionally, there is an increase in water pressure in the region where the collapse occurs. The intensity of the implosion can be measured using a hydrophone, which is a device used to detect and measure underwater sound waves.