Weather
Terms
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- ferrel cell
- at 40 latitude where the westerly winds are common
- 2 scales to measure temperature
- celsius and fahrenheit
- polar jet streams
- form where warm expanded air meets cool dense polar air at the surface providing a pressure defferential
- sling psychrometer
- instrument that measures relative humidity
- mercurial barometer
- has mercury in a graduated glass tube
- coriolis effect
- the rotation of the earth causing moving objects such as winds and ocean currents to be deflected
- relative humidity
- a measure of the quantity of moisture in the air relative to the quantity needed to saturate the air at that temperature
- saturated
- when the air can hold no more wator vapor
- 3 vertical circulations of air
- hadley cell, farrel cell, and polar cell
- wind
- when air moves above the rotating earth
- BAR
- basic unit of pressure
- barometer
- instrument used to measure the pressure of the atmosphere
- atmospheric pressure
- caused by the weight of the air
- heat stroke
- when body temperature reaches 106 and the body completely shuts down
- temperature
- the amount of heat in the atmosphere
- aneriod barometer
- a little box within the instrument will expand or contract when the pressure around it goes up or down as the volume changes a dial moves right or left showing the pressure
- heat exhaustion
- fatigue, headache, nausea, fainting caused by additional water loss
- sweating
- when sweat glands release water in the form of perspiration
- santa ana winds
- when high pressure forms in the great basin east of southern CA and warm dry air is forced over the mountains where it cools as it rises and then races down the other side of the mountain
- jet streams
- 2 rapidly moving streams of air which are westerly winds caused by strong temperature and pressure changes
- hadley cell
- tropical regions receive more intense sunlight, sunlight warms air and warm humid air rises forming clouds and thunderstorms
- heat cramps
- caused when hot weather results in rapid water and salt loss causing a chemical imbalance that leads to cramps
- polar cell
- where cold polar air sinks from the poles downward meeting the ferrel cells at 60 latitude
- doldrums
- areas where the tradewinds from the 2 hemispheres meet
- humidity
- the quantity of water vapor in the air
- absolute humidity
- the quantity of water vapor in a given amount of air at the current temperature