Jet Stream Quiz

The arbitrary lower limit of jet core velocity has been assigned by WMO as

• 60kt

• 60 m/s

• 70 m/s

Jet stream has

• one maxima

• one or more maxima

• only two maxima

The vertical wind shear in a Jet stream is about

• 5m/s/km

• 6m/s/km

• 8m/s/km

Compared to horizontal wind shear the vertical wind shear in a Jet stream is

• weaker

• stronger

• same

In a jet stream, the path of the maximum speed is known as

• Core

• Axis

• Jet streak

The wind speed along the axis of a jet stream is always

• Uniform

• Not uniform

Along the axis of a jet stream there are centres of high speed winds, these are called

• Jet streaks

• Core

• Axis

In a wavy jet the Jet streaks are located over or near the

• Ridge

• Trough

• Between Trough and Ridge

Sub-tropical Jet Stream (STJ) is

• Westerly

• Easterly

• Southerly

The normal position of Sub-tropical Jet Stream is

• 30° N

• 27° N

• 35° N