Water in the Atmosphere
The movement of water through the Earth's systems, powered by the sun's energy, is the:
Water cycle
The temperature at which condensation begins is called:
Dew point
A low pressure area is called a :
Cyclone
A tropical storm with winds at least 119km/hr is called a:
Hurricane
What is an isobar?
Lines on a weather map connecting places of equal pressure
The measure of the amount of water vapor in the air is called:
Humidity
When water droplets form around dust particles become heavy enough to fall, what happens?
Precipitation
Winds of a cyclone in the Northern Hemisphere spin this direction:
Counterclockwise
Tornadoes form from these clouds
Cumulonimbus
What is an isotherm?
Lines on a weather map connecting places of equal temperature
Psychrometer
Big, fluffy clouds are called:
Cumulus
Front
What causes thunder?
The rapid heating of the air from lightning.
What information is needed to make a weather forecast?
temperature, humidity, air pressure, wind direction, wind speed, fronts, storms
Clouds
These clouds produce thunderstorms and tornadoes
Cumulonimbus clouds
Describe a continental tropical air mass
Warm and dry
What is lightning?
The buildup of positive and negative charges within a cloud.
Instruments are sent up into the atmosphere to collect data in a balloon.
How are humidity and relative humidity different?
Humidity is how much water vapor is in the air. Relative humidity is the percentage of water vapor in the air compared to how much it can actually hold
What 2 conditions are needed for cloud formation?
Cooling of air and the presence of particles
What is the jet stream?
A band of high speed winds about 10km above Earth's surface.
List a way to stay safe in a winter storm, thunderstorm, and tornado.
Stay indoors, cover exposed parts of body if outside, stay dry
avoid objects that conduct electricity, stay indoors
go to a basement, storm shelter, middle of house, stay away from windows
What is the butterfly effect?
A small change in the atmosphere can cause larger disturbances later