What is Cold front

• the boundary of an advancing mass of warm air, in particular the leading edge of the warm sector of a low-pressure system.
• A stationary front is a pair of air masses, neither of which is strong enough to replace the other. 
• stop, close up, or obstruct (an opening, orifice, or passage).
• the boundary of an advancing mass of cold air, in particular the trailing edge of the warm sector of a low-pressure system.

What is warm front

• the boundary of an advancing mass of cold air, in particular the trailing edge of the warm sector of a low-pressure system.
• the boundary of an advancing mass of warm air, in particular the leading edge of the warm sector of a low-pressure system.
• A stationary front is a pair of air masses, neither of which is strong enough to replace the other. 
• stop, close up, or obstruct (an opening, orifice, or passage).

Stationary front is..........

• A stationary front is a pair of air masses, neither of which is strong enough to replace the other. 
• the boundary of an advancing mass of cold air, in particular the trailing edge of the warm sector of a low-pressure system.
• stop, close up, or obstruct (an opening, orifice, or passage).
• the boundary of an advancing mass of warm air, in particular the leading edge of the warm sector of a low-pressure system.

Occluded is......

• A stationary front is a pair of air masses, neither of which is strong enough to replace the other. 
• the boundary of an advancing mass of cold air, in particular the trailing edge of the warm sector of a low-pressure system.
• stop, close up, or obstruct (an opening, orifice, or passage).
• the boundary of an advancing mass of warm air, in particular the leading edge of the warm sector of a low-pressure system.

Isobar is.........

• the boundary of an advancing mass of warm air, in particular the leading edge of the warm sector of a low-pressure system.
• A stationary front is a pair of air masses, neither of which is strong enough to replace the other. 
• the boundary of an advancing mass of cold air, in particular the trailing edge of the warm sector of a low-pressure system.
• a line on a map connecting points having the same atmospheric pressure at a given time or on average over a given period.

Thunderstorm is....

• the boundary of an advancing mass of warm air, in particular the leading edge of the warm sector of a low-pressure system.
• A stationary front is a pair of air masses, neither of which is strong enough to replace the other. 
• the boundary of an advancing mass of cold air, in particular the trailing edge of the warm sector of a low-pressure system.
• None of the Above

Hail is........

• the boundary of an advancing mass of warm air, in particular the leading edge of the warm sector of a low-pressure system.
• A stationary front is a pair of air masses, neither of which is strong enough to replace the other. 
• the boundary of an advancing mass of cold air, in particular the trailing edge of the warm sector of a low-pressure system.
• pellets of frozen rain that fall in showers from cumulonimbus clouds.

Tornado is........

• a mobile, destructive vortex of violently rotating winds having the appearance of a funnel-shaped cloud and advancing beneath a large storm system.
• the boundary of an advancing mass of warm air, in particular the leading edge of the warm sector of a low-pressure system.
• the boundary of an advancing mass of cold air, in particular the trailing edge of the warm sector of a low-pressure system.
• A stationary front is a pair of air masses, neither of which is strong enough to replace the other. 

Hurricane is ..........

• the boundary of an advancing mass of warm air, in particular the leading edge of the warm sector of a low-pressure system.
• A stationary front is a pair of air masses, neither of which is strong enough to replace the other. 
• a storm with a violent wind, in particular a tropical cyclone in the Caribbean.
• the boundary of an advancing mass of cold air, in particular the trailing edge of the warm sector of a low-pressure system.

What is Radar

• the boundary of an advancing mass of cold air, in particular the trailing edge of the warm sector of a low-pressure system.
• A stationary front is a pair of air masses, neither of which is strong enough to replace the other. 
• the boundary of an advancing mass of warm air, in particular the leading edge of the warm sector of a low-pressure system.
• system for detecting the presence, direction, distance, and speed of aircraft, ships, and other objects, by sending out pulses of high-frequency electromagnetic waves that are reflected off the object back to the source.