An internal combustion engine
They use a heat sink
A heat sink increases the surface area of a hot item and increases the ability of the item to cool or be cooled.
To sink the heat.
Probably because it draws/absorbs the heat making the heat "sink" into it
Many engines use a Heat Sink. The most common are air cooled engines like a lawn mowers, or some motorcycles. The metal fins you see around the spark plug and the cylinder are heat sinks. A heat sink just provides additional surface area for the heat to be exchanged with the cooler temperature of the air.
A heat sink works on the principle of thermal transfer. The heat sink transfers heat from the chip to the air, wicking heat away.
Yes! Water is a heat sink.
Probably because it draws/absorbs the heat making the heat "sink" into it
Use a heat sink. Many LEDs are heat sensitive. I make a heat sink by putting a rubber band round the handles of a small pair of snipe nosed pliers.
YOu can damage the motherboard
It might damage the CPU
If a body of water has a high heat capacity, it can store more thermal energy making it a good heat sink.