Weather Flashcards
The amount of water vapor in the air is called __________?
humidity
The natural process in which water constantly moves among oceans, land, and the atmosphere is called the __________?
water cycle
A _________ is a boundary between two air masses.
front
At the center of a __________, air rises and forms clouds and precipitation.
low pressure system
A continental polar __________ brings cold temperatures during winter.
air mass
When the same __________ passes through two locations on a weather map, both locations have the same pressure.
isobar
The humidity in the air compared to the amount of air can hold is the __________?
relative humidity
Clouds form when water changes from?
liquid to gas
what type of precipitation reaches Earth’s surface as large pellets of ice?
hail
Which of these sinking-air situations usually brings cold dry air weather?
continental polar
Which is an intense tropical storm with which exeeding 119 km/h?
hurricane
Which contains measurements of temperature, air pressure, humidity, precipitation, and wind speed and direction?
a surface report
What does Doppler radar measure?
the speed at which precipitation travels
What describes cirrus clouds?
wispy, at high altitudes
What instrument measures wind speed?
anemometer
What does a barometer measure?
wind pressure
Air pressure increases as __________ increases?
altitude
What does a psychrometer measure?
relative humidity
What do stratus clouds look like?
flat, white, and layered
what do cumulus clouds look like
fluffy, heaped, or piled up
What is the temperature and humidity of Maritime Tropical?
humid and warm
What is the temperature and humidity of Continental Polar?
cold and dry
What is the temperature and humidity of Maritime Polar?
cold and humid
What is the temperature and humidity of Continental Tropical?
warm and dry
The pressure that a column of air exerts on the area below it is called __________?
air pressure
What are programs used to determine formulas?
computer model
A line connecting places with the same pressure is called an __________?
isobar
A line connecting places with the same temperature is called an __________?
isotherm
What diagram shows surface weather measurements?
a surface report
List two ways that upper air weather conditions are measured?
Doppler radar and satellite images
What measures the average kinetic energy of air molecules?
temperature
What causes weather to remain the same several days in a row?
air mass
What lists the stages of a thunderstorm in order?
cumulus, mature, dissipation
What causes air to reach its dew point?
dropping temperatures
What measures air pressure
barometer
What expresses moisture saturation the best?
relative humidity
What is air pressure measured in?
milibars
What is air temperature measured in?
degrees Fahrenheit or Celsius
What are clouds and fog measured in?
visibility
What is humidity measured in?
g/cm^3 (grams of water per meter of air)
What is precipitation measured in?
feet or inches
What is wind measured in?
speed
