2 pt 3 pt 4 pt 5pt 1 pt 2 pt 3 pt 4 pt 5 pt 1 pt 2pt 3 pt 4pt 5 pt 1pt 2pt 3 pt 4 pt 5 pt 1 pt 2 pt 3 pt 4pt 5 pt 1pt Air Severe weather Weather Forecasts ClimateVocabulary

When do convection currents form?

When air temperatures are different

Winds over the United States generally blow in what direction?

west to east

How does the Gulf Stream and North Atlantic Drift currents affect weather in Europe?

They cause the temperatures to be warmer than they would be normally.

As altitudes increase how does air pressure change?

Air pressure decrease because gas particles are farther apart and there is less air above.

Most weather happens in what layer of the earth?

The troposphere

Give an example of a severe storm.

Thunderstorms, tornadoes blizzards, and hurricanes.

Where do hurricanes get their energy?

Hurricanes get their energy from warm ocean water.

What does a severe storm watch mean?

That a severe storm might form.

What does a severe storm warning mean?

A severe storm has formed and you should prepare for them.

What should you do when there is a severe storm warning?

You should get inside as soon as possible to be safe.

Define weather.

Weather is made up of all the conditions in one place at a single moment.

What are all the parts needed to be described in a weather system?

The parts in a weather system include the temperature, moisture, clouds, precipitation, wind speed, air pressure, and wind direction

What does a red H mean on a weather map?

A red H means high air pressure.

As the atmospheric layers get higher what happens?

The air pressure decreases

What does a blue line with blue triangles under the line represent on a weather map?

That there is a cold front.

Define climate.

Climate is the average of weather conditions over a long time.

What causes precipitation at fronts?

Rising warm air

If a forecaster wanted to determine the climate of a certain area what information would help him?

Any data based on averages. Fossils would also be helpful to the forecaster.

What is air mass?

Air mass is a large body of air with similar properties all through it.

Describe the four common air masses and where they are found: maritime polar air, continental polar air, maritime tropical air, and continental tropical air.

Maritime polar air masses form in the ocean near the poles, and are cold and moist. Continental polar air masses form over land near the poles, and are cold and fairly dry. Maritime tropical air masses form over tropical oceans or rainforests and are warm and very humid. Continental Tropical Air masses form over hot desserts and are warm and fairly dry.

What does a meteorologist do?

A meteorologist observes weather patterns and makes predictions for the weather.

What does a thermometer measure?

The temperature.

Name a weather instrument that measures the wind speed.

An anemometer.

What tool is used to show air pressure?

A barometer

What kind of instrument is used to measure how much rain has fallen?

A rain gauge.