Show:
Earth's Atmosphere
Air Currents and Wind
Oceans and Air Temperature
Severe Weather
Predicting the Weather
100
atmosphere
The air that surrounds Earth
100
convection
The transfer of heat through the movement of gas or a liquid.
100
climate
The average weather condition of a place or region.
100
air mass
A large region of air that has a similar temperature and humidity.
100
forecast
making a "best guess" before something happens
200
troposphere
The layer of gasses closest to the Earth's surface
200
global wind
A system of wind that blows steadily in a predictable direction over long distances.
200
current
An ongoing movement of ocean water.
200
scientific use of "front"
The meeting place between air masses.
200
meteorologist
A scientist who specializes in the study of Earth's atmosphere and weather.
300
humidity
The amount of water vapor in the air.
300
sea breeze
When air moves from water toward land
300
The Gulf Stream
An ocean current that carries warm water from near the equator to the poles.
300
low pressure closure
An area of low pressure air surrounded by higher pressure air.
300
weather map
Shows the weather in a specific area at a specific point in time.
400
barometer
an instrument used to measure atmospheric pressure.
400
Where does sunlight strike the Earth most directly?
At the equator sunlight strikes the Earth most directly.
400
What moves heat around the world in the oceans?
ocean currents
400
What is one theory of how lightening forms?
Static electricity builds up when particles of ice and rain rushing up rub against particles rushing down.
400
Name three tools used by weather forecasters to collect data?
Satellites, weather balloons, and Doppler radar
500
What are three variables that can change air pressure?
Volume, temperature and the amount of water vapor in the air
500
latitude
Used to measure the distance north or south of the equator
500
What are four factors that contribute to climate?
average temperature, average rainfall, humidity, and wind conditions.
500
What causes storms?
The collision of air masses that have different temperatures and humidities.
500
What kind of weather does a low pressure system usually bring?
warm and stormy weather