AGRICULTUREBy Michael B and Stewart G

Four events that have to happen in order for an engine to work

Intake Compression Power exaust

How has the engine improved efficiency

Mechanization has helped make production of farm products possible with a great reduction in the labor required.

In 1800, about 55 worker-hours were needed to produce an acre of wheat.

In 1875, using steam traction engines and horses, about 15 worker-hours were needed.

In 1925, using early gasoline tractors, an acre of wheat could be produced in about five worker-hours. Modern machinery requires a little more than one worker-hour to produce the same acre of wheat.