How are si units used in the united states?

Mostly in science classes, science laboratories, and companies
that manufacture things for export to other countries.

SI units are used very little by the common people, for things that
are going to stay in the US.  This is one of last three countries in the
world that have not officially adopted the metric system. 

We are unique, along with those other two economic, industrial, and
scientific leaders of the world:  Liberia and Myanmar.

1) when you rub your hands together quickly, the kinetic energy is converted to mechanical energy.2) thermal energy from the sun travels to earth as infrared waves.3) energy is transferred through the matter of space by electromagnetic waves. 4) when a match is burned, chemical potential energy is converted to thermal and radiant energy. 5) seismicwaves are caused by back and forth movement , or vibration, of an object. 6) mechanicalenergy in an engine changes thermal energy into kinetic energy to make a car move.