What is the jet stream and how does it affect the weather? MET

What are jet streams?

• Fast flowing currents of water

• Fast flowing currents of air

• Slow flowing currents of air

• Slow flowing currents of water

Where are the major jet streams found?

• At the surface of the earth

• In the stratosphere

• Just below the tropopause

• Just above the tropopause

What causes the polar front jet to arise?

• Weak temperature contrasts between cold polar air and cold tropical air

• Strong temperature contrasts between cold polar air and cold tropical air

• Strong temperature contrasts between cold polar air and warm tropical air

• Weak temperature contrasts between cold polar air and warm tropical air

What force acts from high to low pressure in the atmosphere?

• Centripetal force

• Frictional force

• Pressure gradient force

• Coriolis force

In which direction does the air move in the Northern Hemisphere due to the Coriolis force?

• From west to east

• From south to north

• From north to south

• From east to west

When is the jet stream stronger?

• In the autumn

• In the spring

• In the winter

• In the summer

What causes wet and windy weather in the UK during the winter months?

• Warm air masses

• High pressure systems

• Low pressure systems

• Stable conditions

What can a stationary jet stream pattern bring to a region?

• Extreme heatwaves

• Frequent high pressure systems

• Frequent low pressure systems

• Stable weather conditions

What happens when the jet stream meanders north and south?

• It causes extreme droughts

• It leads to stable weather conditions

• It drives depressions towards different regions

• It has no impact on weather systems

What effect does a jet stream have on weather?

• Temporary effect

• Fundamental effect

• Minimal effect

• No effect