Airspeed _____ is an instrument that measures the speed of an aircraft relative to the surrounding a...: ответ на тест 304345 - Английский язык

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The slowest aircraft are helicopters, which can hover in the air without moving. Aircraft with wings have to fly above a certain speed, otherwise they will crash. However, pedal-powered aircraft flew across the English Channel for the first time. Its average speed was 8 miles an hour – or faster than you can run!

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 _____ is a measuring instrument that sends out an acoustic pulse in water and measures distances in terms of the time for the echo of the pulse to return.

_____ pressure is called the force per unit area exerted by an atmospheric column.

__________ is the art and science of graphically representing a geographical area, usually on a flat surface such as a map or chart.

Climate _____ is an attempt to formalize the process of recognizing climatic similarity and of systematizing the effects of interacting climatic processes.

Meteorology is a scientific discipline concerned with _____ phenomena, particularly of the troposphere and lower stratosphere.