Whirling mass of cool dry air that brings fair weather

• low pressure
• high pressure
• medium pressure
• wind

A boundary between two different air masses

• cloud
• wind
• equator
• front

A huge body of air with similar temperature, humidity, and pressure

• air mass
• air block
• cloud
• wind

Whirling mass of warm, moist air that brings stormy weather 

• cold front
• warm front
• low pressure
• humidity

The boundary of an advancing mass of cold air

• warm front 
• cold front
• medium front
• hot front

The amount of moisture in the air

• wind
• cloud
• cold front
• humidity

Movement of air caused by differences in pressure

• air
• wind
• snow
• clouds

The boundary of an advancing mass of warm air

• cold front
• warm front
• wind
• clouds

What does this weather symbol represent?

• low pressure
• high pressure
• cold front
• warm front

What does this weather symbol represent?

• low pressure
• high pressure
• warm front
• cold front