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Frage		Antworten
Give two examples of simple prehistoric machines Lernen beginnen		the club, the oar
What kind of power did this machines use? Lernen beginnen		human, animal, water, wind, steam
How was the power in these machines transformed? Lernen beginnen		With the forces multiplied and the speed reduced
What were gears(toothed wheels) used for? Lernen beginnen		to regulate the speed of rotation
what is a crank? Lernen beginnen		A crank is a device for changing reciprocating motion into rotary motion or vice versa
What is transportation? Lernen beginnen		Transportation is a physical movement or flow of goood
What mode of transport is a cheapest Lernen beginnen		water
what mode of transport is the most expensive and fastest Lernen beginnen		air
What type of products are water-based modes of transport used for? Lernen beginnen		commodity type products, such as grain, coal, and ore
What is ICA?* Lernen beginnen		the Interstate Commerce Act
What is intermodal transport Lernen beginnen		transport that uses more that one mode of transportation

The Very Beginnings of the engine