Share Machines Then and Now
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axle
Bar on which a wheel turns.
batteries
Stores energy and changes it into electricity.
canal
an artificial waterway
cart
(US) a metal structure on wheels that is used for carrying things
pendulum
something that hangs and swings back and forth
chariot
a two-wheeled vehicle pulled by a horse
satellite
An object that revolves around another object in space
smoke
the cloud of black, gray, or white gases and dust that is produced by burning something
steam
e hot gas that water changes into when it boils
flour
fine white or brown powder made from grain, especially wheat, and used in cooking for making bread, cakes, etc.
medicine
Any drug used to cure, prevent, or treat illness or discomfort
watermill
a building next to a river containing machinery for grinding grain into flour
windmill
An engine powered by the wind designed to produce energy from an inexhaustible source.
fuel
a material that releases energy when it burns
coal
a black or dark brown rock consisting mainly of carbonized plant matter, and widely used as fuel.
Communication
A process through which you send messages to and receive messages from others.
