Weather, Elements Of Weather And Weather Instruments - ProProfs Quiz
maintains a constant relative humidity provides readings that increase as air pressure increases Q. As you rise upwards in the atmosphere, air pressure. Weather Quizzes & Trivia What weather instrument tells wind direction? A. A meteorologist would use a ______ to determine air pressure. Weather Quizzes & Trivia This weather instrument measures air pressure. A. This type of weather instrument measures wind direction. A.
What instrument is used to measure air pressure?
About when was it invented? What relationship is there between the rate of pressure decrease and air density i. Layers of the atmosphere 15 pts. Approximate altitudes of these layers.
Ideal Gas Law 10 pts. This is a microscopic-scale explanation of air pressure. R and k are both constants you can pretty much ignore them. You should be able to determine what will happen to the pressure in a rigid container or something flexible like a balloon if you change the variables in the equation above.
What variables could you change together in such a way that the pressure would stay constant? In the atmosphere why is warm air normally low density air cold air normally high density air?
Weather, Elements Of Weather And Weather Instruments
Upward and downward forces 15 pts. Vertical forces acting on air parcels the strength of one of the forces depends on the air inside the parcel, the other on the air outside the parcel.
These two forces are usually in balance. We can't see it, but we can feel it. So what exactly is wind? Wind is the movement of large amounts of air.
Even though we can't see air, we know that it is made up of molecules of different kinds of gasses, mostly nitrogen and oxygen. When lots of these molecules move, usually in one direction, we call this wind. Where does wind come from?
Wind is caused by differences of pressure in the Earth's atmosphere. Air from a high pressure area will move towards an area of low pressure. High winds are caused when air moves between areas with large differences in air pressure.
On Earth, the main differences in air pressure are caused by differences in temperature. Cool air produces high air pressure and warm air produces low air pressure. Warm air wants to rise. When warm air rises, cool air will move in and replace the warm air, causing wind. Another factor that affects the wind is the spinning of the Earth. This is called the Coriolis effect. How is wind measured? Meteorologists use two main measurements to describe wind: Wind Direction - Wind direction is described by using the direction that the wind came from.
Weather Instruments - ProProfs Quiz
For example, a southerly wind would blow from the south to the north. Wind direction is measured a number of ways including weather vanes, flags, and windsocks. Wind Speed - The speed of wind is measured in miles per hour or kilometers per hour. Scientists typically use a tool called an anemometer to measure the speed of the wind.
Global Winds The Earth has consistent wind patterns when looked at from a global scale. Global winds are created by both the spin of the Earth Coriolis effect and the differences in temperature between the equator and the polar areas. These winds are often grouped together as trade winds, easterlies, and westerlies. Trade winds - Trade winds occur near the equator and flow from either the north or south towards the equator.