Local and Global Winds

Front

What are the properties of cold air?

Back

Cold air is more dense and has more pressure than warm air.

Front

In which direction do polar easterlies flow?

Back

Polar easterlies flow from east to west.

Front

How does air pressure affect air movement?

Back

Air always moves from areas of high pressure to areas of low pressure.

Front

Why does warm air rise?

Back

Warm air is less dense than cooler air.

Front

What is the narrow band of high-speed winds near the top of the troposphere called?

Back

The jet stream.

Front

Define 'local winds'.

Back

Local winds are winds that blow over short distances and are influenced by local geography.

Front

What are 'trade winds'?

Back

Trade winds are steady winds that flow from east to west in the tropics.

Front

What are 'westerlies'?

Back

Westerlies are winds that blow from west to east in the mid-latitudes.

Front

Explain the Coriolis effect.

Back

The Coriolis effect is the deflection of moving objects caused by the rotation of the Earth.

Front

What is the difference between high pressure and low pressure systems?

Back

High pressure systems are associated with clear skies and calm weather, while low pressure systems are associated with clouds and precipitation.