Weather Measurements
A tool that measures the amount of rain that falls
Rain Gauge
The movement of air across the atmosphere
Wind
Air mass
Whirling mass of cool, dry air that usually produces good weather
High Pressure System
When liquid water from the soil is pulled into a plant through the roots, and then exits as water vapor through the leaves
Transpiration
How fast molecules are moving
temperature
The direction that air always moves (from _______ to _______)
High pressure to low pressure
Represented by a line of blue triangles on a weather map
cold front
The level of the atmosphere where weather happens
Troposphere
Low-level, sheet-like clouds that block out the sun and cause steady precipitation
stratus
The amount of water vapor in the air
humidity
A tool used to measure humidity
Hygrometer
When 2 air masses meet and stop moving
stationary front
The 2 key ingredients required to form a hurricane
warm temperatures and moist air
Tall, dark clouds whose formation produces updrafts as condensation releases thermal energy (resulting in more moist air rising and condensing)
cumulonimbus
A tool used to measure air pressure
barometer
Movement of thermal energy in our air and ocean
Convection
When a warm air mass meets a cold air mass and slowly rises over it
warm front
The precursor to a tornado
a strong thunderstorm
The process that removes water vapor from the air when it cools to the dew point temperature
condensation
A tool used to measure wind speed
anemometer
2 characteristics that are used to classify clouds
shape and altitude
The type of weather you can expect when a cold air mass meets a warm air mass and the cold air slides under the warm air
storms
Whirling mass of warm, moist air that generally brings stormy weather and strong winds
Low Pressure System
This is produced by infiltration and percolation
groundwater