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E: Weather
E: 15.2/ 16.1/ 16.2
52
Meteorology
6th Grade
03/28/2011

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Cards

Term
Heat
Definition
energy that flows from an object with a higher temperature to one with a lower temperature.
Term
Radiation
Definition
Energy transferred in rays & waves
Term
Conduction
Definition
Transfer of energy when molecules bump into each other through contact.
Term
Convection
Definition
Transfer of heat by the flow of a material
Term
Water cycle
Definition
Water moves back and forth between Earth’s atmosphere and surface
Term
Evaporation
Definition
water going from liquid to vapor/gas
Term
condensation
Definition
change of the physical state of matter from gaseous phase into liquid phase
Term
Hydrosphere
Definition
all water on Earth
Term
Weather
Definition
the state of the atmosphere at a specific time and place.
Term
Temperature
Definition
a measure of air molecule movement
Term
Wind
Definition
air moving in a specific direction
Term
Air moves from ________to ________pressure areas, causing wind
Definition
high to low
Term
anemometer
Definition
Wind speed measured by an
Term
a wind vane or wind sock
Definition
Wind direction
Term
Humidity
Definition
the amount of water vapor in the air
Term
Relative humidity
Definition
the amount of water vapor in the air compared to what it can hold at a specific temperature.
Term
sling psychrometer
Definition
Measured with a _____________-
Term
Dew point
Definition
the temperature at which air is saturated and condensation forms
Term
Clouds
Definition
form as a warm air is forced upward and cools. Then the water vapor condenses in tiny droplets around dust particles that are suspended in the air.
Term
Transparent
Definition
see thru
Term
Translucent
Definition
some light gets through
Term
Opaque
Definition
very little, if any light gets thr
Term
Stratus
Definition
smooth, even sheets or layers at low altitudes
Term
Cumulus
Definition
puffy, white clouds, often with flat bases
Term
Cirrus
Definition
high, thin, white, feathery clouds made of ice crystals
Term
Cirro
Definition
high clouds
Term
Alto
Definition
middle elevation clouds
Term
Strato
Definition
low clouds
Term
Nimbus
Definition
clouds are dark and full of water
Term
Precipitation
Definition
water falling from clouds
Term
rain gauge
Definition
precipitation is Measured with a
Term
rain
Definition
Water drops that fall when the temperature is above freezing fall as
Term
snow
Definition
Water drops that fall when the temperature is below freezing fall as
Term
Hail
Definition
forms when water drops freeze in layers around a small nuclei of ice
Term
sleet
Definition
d) When snow passes through warm air, melts, and refreezes near the ground, it becomes
Term
Air mass
Definition
a huge body of air that has similar temperature, humidity, and air pressure throughout it.
Term
tropical air mass
Definition
warm, form in the tropics and have low air pressure
Term
polar air mass
Definition
cold, form north of 50° north latitude and south of 50° south latitude
Term
maritime air mass
Definition
air masses form over oceans, very humid
Term
Continental air mass
Definition
air masses form over land, in the middle of continents, and are dry
Term
prevailing westerlies
Definition
North American air masses are mainly controlled by
Term
Front
Definition
A) A boundary between two air masses of different density, moisture, or temperature
Term
Cyclone
Definition
L = “low”, low pressure area; causes storms and precipitation
Term
Anticyclone
Definition
H= ‘”high”, high pressure area; Causes dry, clear weather
Term
lightning
Definition
Movement of air causes static electricity; When positive & negative meet
Term
Thunder
Definition
Lightning superheats the air; Expands rapidly & contracts forming sound waves
Term
Tornado
Definition
A violent, whirling wind that moves in a narrow path over land
Term
Fujita Scale
Definition
estimate tornado strength based on damage surveys
Term
Hurricane
Definition
A large, swirling, low pressure system that forms over tropical oceans
Term
Blizzard
Definition
A winter storm with strong winds, cold temperatures, and low visibility
Term
weather WATCH
Definition
means condition are favorable
Term
weather WARNING
Definition
means that conditions already exist
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