1The strong vortex in the ocean pulled the boat underwater.
2Do you know what causes a vortex to form in a tornado?
3The engineer designed a machine to create a vortex that would mix the chemicals efficiently.
4Be careful not to get too close to the vortex in the drain, or you might get sucked in.
5The scientists studied the vortex in the whirlpool to understand its effects on the surrounding water.