Air Pressure and Fronts. Air Pressure Air has weight, and is in constant motion and is pulled towards Earth’s center by gravity. Air pressure is greatest.

Slides:

Advertisements

Similar presentations

WEATHER PATTERNS Chapter 15.2 Pages Air Masses A large body of air with similar properties such as temperature and humidity. They are similar.

Advertisements

WEATHER Fronts and Mapping

Air Masses, Pressure Systems, and Frontal Boundaries

 The atmospheric factors that cause weather are heat energy, air pressure, winds, and moisture in the air.  Air pressure depends on the density of the.

FRONTS phschool The movement of air masses is determined by the prevailing winds and upper air currents This causes most local weather condition.

Chapter 6 test review Weather.

Understanding Weather

Weather. Meteorology Meteorology is the study of processes that govern the Earth’s atmosphere. Meteorology helps make weather predictions possible.

Weather Patterns. Air Mass Large body of air Has the properties of the surface where it developed.

Four Elements that Affect the Formation and Release of Avalanches.

Fronts and Clouds I can predict the cloud type that will results from various types of fronts.

Air mass - large body of air that has similar temp. and moisture - move by prevailing winds and upper air currents Front - boundary between 2 different.

Develop and use models to explain how relationships between the movement and interactions of air masses, high and low pressure systems, and frontal boundaries.

Notes: Air Masses and Predicting the Weather

Fronts 4 different types: 1. Cold front 2. Warm front 3. Stationary

Air Masses and Fronts CHAPTER 17-1.

AIR MASSES AND FRONTS.

Air Masses and Fronts.

Air Masses and Fronts.

Air Masses, Fronts and Weather Systems.  Movements of Air Masses and Fronts are vital to our understanding and prediction of Weather Systems  Weather.

Air Pressure, Fronts, Tornadoes and Hurricanes. Air Pressure Air pressure is the amount of pressure air puts on us and the things around us. Hot air contains.

 Weather depends on what type of air mass is over an area and whether or not the spot is under a front.  The air masses and how they interact will determine.

Fronts and air masses By the administrator Copyright of sivani.vedulas.com.

Journal W-2 1.Explain how clouds form. 2.How do we classify clouds? 3.Compare and contrast freezing rain and sleet. 4.What is dew point? TURN IN JOURNALS!

Section 2: Fronts Preview Objectives Fronts

What Causes Wind?  Air is a fluid – it moves easily air pressure  Movement of air caused by changing air pressure igh pressure to low pressure  Wind.

Air Masses and Fronts Meteorology. Air Masses Classified by temperature and humidity –Tropical: Warm, form in tropics, low pressure –Polar: cold, form.

1._____reason for the seasons (seasons) 2._____air mass that would blow into Georgia from the southeast (air mass) 3._____curving of wind due to Earth’s.

Weather Patterns Air Masses and Fronts. Types of Fronts Cold front – a cold air mass overtakes a warm air mass ▫Type of Weather: clouds, possibly storms.

Table of Contents 6.3 Masses and Their Movements Weather Patterns.

Chapter 3 Section 1 Air Masses and Fronts.

Air Masses and Fronts. OBJECTIVE: IDENTIFY THE MAJOR TYPES OF AIR MASSES THAT EFFECT WEATHER IN NORTH AMERICA.

by Brent Rivenbark and Rosalind Byrd

Air Masses and Fronts. What is Air Mass? A huge body of air that has similar temperature, humidity, and air pressure at any given height.

Objective: Determine the humidity and temperature of air masses.

Air Masses and Fronts Mr. Bombick 7 th Grade Science.

What Causes Wind?  Air is a fluid – it moves easily air pressure  Movement of air caused by changing air pressure igh pressure to low pressure 

Air Masses and Fronts. Types of air masses An air mass is a huge body of air that has similar temperature, humidity and air pressure throughout it. There.

Weather Brain Pop Weather. What is Weather? Weather is the condition of Earth’s atmosphere from day to day. Earth’s atmosphere is the envelope of gases.

Weather around the U.S. Today’s focus: AIR MASSES.

AIR MASSES AND FRONTS. AIR MASSES HAVE YOU EVER WONDERED HOW IT CAN BE ALMOST 60 ONE DAY AND THE NEXT DAY IT IS A SNOW STORM? CHANGES IN WEATHER ARE CAUSED.

Air Masses and Fronts SWBAT explain the ways that air masses and fronts form; discuss the causes of severe weather; explain how technology is used to monitor.

AIR MASSES AND FRONTS. AIR MASSES A section of air that has similar characteristics (temperature, weather, humidity, etc.) throughout it from the area.

Weather Patterns Tuesday, December 7, 2010.

Air Masses & Fronts.

Fronts 4 different types: 1. Cold front 2. Warm front 3. Stationary

Weather Fronts.

Sit somewhere Pick up a weather sheet and complete.

AIR MASSES AND FRONTS.

Types of Weather Fronts

Chapter 20: Air Masses, Fronts, and Instruments

Air Masses, Fronts.

Types of Weather Fronts

Journal #46 What do the following symbols mean? c m P T

Weather Fronts.

Air Masses, Fronts.

Types of Weather Fronts

OBJECTIVE: Describe the four major types of fronts.

Air masses An air mass is a large body of air with consistent temperature and moisture characteristics throughout. Two air masses that affect the United.

Air masses form over large land or water masses. Air Mass

Air Masses and Fronts.

Air Masses, Fronts.

Air Masses What are major air masses?

Air Masses and Fronts.

Presentation transcript:

Air Pressure and Fronts

Air Pressure Air has weight, and is in constant motion and is pulled towards Earth’s center by gravity. Air pressure is greatest at the Earth’s surface and decreases with increased altitude. Higher air pressure near the ground.

What instrument is used to measure air pressure? Barometer measures air pressure. High pressure indicates Dry Air Low pressure indicates Moist air

Fronts Fronts occur where two large air masses collide at the earth’s surface. Each air mass has a different temperature associated with it. In the US, air masses usually travel west to east.

Types of Air Masses Continental Polar Maritime Polar Maritime Tropical Continental Tropical

Air masses do not usually mix. The boundary between colliding air masses is called a front. Fronts are usually associated with some form of precipitation. Thunderstorms, tornadoes, and other severe weather can occur with fronts.

Four types of fronts 1.Cold Front 2.Warm Front 3.Stationary Front 4.Occluded Front Why are there no fronts in the Tropics? There are no cold air masses, just warm air.

Cold Front Heavy cold air displaces lighter warm air, pushing it upward. Cumulus clouds. Thunderstorms occur. Temperatures drop5 to 15 degrees. Winds are gusty. Rain, snow, sleet, and hail can occur.

COLD FRONT

Warm Front Warm fronts occur when warm air replaces cold air by sliding over it. Altocumulus clouds form Less chance of rain, snow, or sleet. Temperatures may increase. Winds are usually gentle.

Warm Front

Stationary Front Neither warm nor cold air advances. Neither front is moving. Lasts for days. Lots of clouds Temperatures remain the same. Gentle or no wind.

Occluded Front Fast-moving cold air mass overtakes a slower-moving cold air mass and forces it up. Cool temperatures and large amounts of precipitation.