Weather and Weather variables
The atmospheric conditions, along with short-term changes, of a certain place at a certain time
What is weather
Measure of the average kinetic energy of molecules in the air
What is Air temperature
The amount of water vapor in the air
What is humidity
The way most water vapor enters the atmosphere
What is evaporation
Water, in liquid or solid form, that falls from the atmosphere
What is precipitation
Things that can change
What are variables
The energy an object has because it is moving
What is Kinetic energy
The amount of water vapor present in the air compared to the maximum amount of water vapor the air could contain at that temperature
What is Relative Humidity
Wind is created as air moves from areas of ________ pressure to areas of _______ pressure
What is high to low
flat, white, and layered clouds found at an altitude up to 2000 m (below 6,000ft)
What are Stratus Clouds
Two of the most common variables used to describe weather
What are Temperature and rainfall
The pressure that a column of air exerts on the air, or surface, below it
What is Air pressure
Relative humidity is measured using a __________________
What is a psychrometer
The instrument meteorologists measure wind speed using
What is an anemometer
Happens when the snow melts into rain as it passes through a layer of warm air and refreezes when it passes through a layer of below-freezing air. Other times, it is just freezing rain
What is sleet
Scientists who study and predict weather
What are Meteorologists
Air pressure is ___________ at low altitudes than it is at high altitudes
What is greater
When the amount of water vapor in the air is one-half of the maximum the air can hold at that temperature, the Relative humidity is ______%
What is 50%
Water vapor will do this as it rises and cools in the atmosphere
What is condense
Wispy clouds found above 6,000 m (above 18,000 ft)
What are Cirrus Clouds
6 variables that describe a variety of atmospheric conditions.
What are air temperature, air pressure, wind speed and direction, humidity, cloud coverage, and precipitation
This is an instrument used to measure air pressure
What is a barometer
The temperature at which air becomes fully saturated because of decreasing temperatures while holding the amount of moisture constant
What is dew point
The series of natural processes in which water continually moves among oceans, land, and the atmosphere
What is the water cycle
This starts as a small piece of ice that is repeatedly caught in an updraft within a cloud. A layer of ice is added with each lifting. When it becomes too heavy, it falls to Earth
What is hail