Vehicles are the non-living means of transport and they are used all around the world for different purposes. Most of the vehicles are made by human beings but there are some vehicles that are not made by human beings. Floating tree trunks and icebergs are some of the vehicles which are not made by humans and cars, bicycles and boats are some of the vehicles which are made by humans.
As a result of the creativity of human beings and the development in technology, a number of vehicles have been developed over the past few years and more advanced vehicles are being developed. Vehicles differ from each other on the basis of driving force, load carrying capacity and the purpose.
A number of vehicles have been developed for carrying out specific purposes like boats have been developed for carrying humans and cargo over the water whereas aircrafts have been developed for carrying humans and cargo through the air. Also, some vehicles are powered by electric motors whereas some vehicles don't use electric motors for their working. A rickshaw is an example of a vehicle which does not use an electric motor as it is powered by human beings.
Watercraft: A watercraft is a vehicle which is used to move through the water. It can be used for different purposes as it can be used for transport, commerce, physical exercise and pleasure. It is even used by army for carrying out some missions. Boats, rafts, submarines are some of the watercrafts.
Aircraft: An aircraft is a vehicle which is used to travel through the Earth's atmosphere. An aircraft is either used for traveling from one place to another or for transporting goods from one place to another. It is faster than vehicles which are used on land and which are used on water. Also, aircrafts can carry large amount of cargo when compared to land vehicles and aircrafts are also very expensive when compared to other vehicles.
Proper training is required in order to run an aircraft. Aerostats and aerodynes are the two categories of aircrafts. Aerostats use buoyancy to float in the air whereas a dynamic upthrust is required for aerodynes in order to push the aircraft upwards. Rockets, airplanes, helicopters are some of the popular aircrafts.
Hovercraft: A hovercraft is a vehicle which is designed to travel over a smooth surface. It is supported by the high-pressure air as the high-pressure air is ejected downwards i.e. against the surface below the vehicle. The high-pressure air lifts the vehicle so that it can move easily over the surface.
One engine is required for driving the fan available at the bottom of the hovercraft and one or more engines are required for providing the thrust so as to propel the craft in the desired direction. Hovercrafts are used by companies for transporting goods from one place to another and they are also used by armies for carrying out missions that are to be executed over the seas and oceans.
Land Vehicles: Land vehicles are the vehicles which are used on land. A land vehicle can be animal-powered, human-powered or motor-powered. In an animal-powered vehicle, the driving force is produced by animals whereas driving force is produced by humans in a human-powered vehicle. An electric motor is used for producing the driving force in a motor-powered vehicle. Motor-powered vehicles are faster than animal-powered and human-powered vehicles.
That being said, land vehicles are further classified on the basis of their usage as they are also categorized as construction vehicles, emergency vehicles and commercial vehicles. As for the examples of land vehicles, carts, sledges are examples of animal-powered vehicles and bicycles, rickshaw, skates are examples of human-powered vehicles. Cars, buses, tucks, motorcycles are some of the widely used motor-powered vehicles.
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