Five types of measuring instruments used by Meteorologists:
A barometer is an instrument used by the meteorologist to measure the atmospheric pressure. Since, atmospheric pressure changes with the altitude, barometer helps in measuring atmospheric pressure above and below sea level. There are two types of barometer- mercury and aneroid.
Sling psychrometer is an instrument used to measure the humidity and dew point of an area. There are two types of thermometer in this wet-bulb and dry-bulb.
Rain Gauge is an instrument used to collect the rainfall and measure the amount of it. It is done by collecting the precipitation of an area and then it is used to measure the rainfall.
Wind vane is an instrument used to measure the direction of wind or from which direction the wind is coming. It is also known as weather vane.
Anemometer is an instrument used to measure wind speed. It is used in weather stations.
The St. Lawrence seaway helped because it was large enough to allow shipping transportation to the USA. Which allowed Canada and the USA to trade goods. The seaway extends from Montreal through the Welland Canal in Ontario, Canada, to the eastern portion of Lake Erie.
During the early earth, when photosynthesis has not yet evolved, there were only negligible amounts of free oxygen in the atmosphere. It was said that the Earth's atmosphere had no free oxygen then. This is about 3.5 billion years ago.
Think of a piece of paper that is enhanced to grow forever. This would
fit the definition of a plane. A plane is a flat surface that has no
thickness. A plane contains an infinite number of lines and extends
without end in the directions of its lines.
