What is a depression (low pressure) in relation to weather? I know this isn't really a science question it's more geography but please help!!!My mock exams are depending on your answer!!!!...

What is a depression (low pressure) in relation to weather? I know this isn't really a science question it's more geography but please help!!!

My mock exams are depending on your answer!!!!

Pleeeeeeeeease help.

Asked on by leekelly

1 Answer | Add Yours

bandmanjoe's profile pic

bandmanjoe | Middle School Teacher | (Level 2) Senior Educator

Posted on

On the contrary, it is quite an excellent science question!  A depression is an area, in weather terminology, that indicates low air pressure, usually one of the necessary qualities to brew a thunderstorm.  If one combines a depression, which typically will have warm, moist air, with the advance of a colder mass of air, the colder denser air, called a high, will push the warmer, less dense air out of the way, creating bands of thuderstorms as it goes.  The thunderstorms can range in intensity and precipitation, depending on the air pressure difference and moisture content of the air involved.

Last year, my school encountered a tornado warning while we were in the middle of studying a unit on weather.  The sirens sounded, and my class that I was going to have measure their daily weather data, found themselves seated in the hall, in the "weather-ready" position.  I passed out our electronic weather data devices and had them measure the air pressure as the tornado passed, fairly close to our school.  They got a first-hand account in seeing how the "lower the low pressure is", compared to the high pressure that will follow behind it, has a direct impact on the severity of the storm that is produced!

Sources:

We’ve answered 318,926 questions. We can answer yours, too.

Ask a question