Air Masses and Fronts Science 6 th Grade
![Air Masses and Fronts Science 6 th Grade Air Masses and Fronts Science 6 th Grade](https://slidetodoc.com/presentation_image_h/f6e883515053080f3e1468d8c0f8c77f/image-1.jpg)
![Air Mass • A large body of air with similar temperature, humidity, and air Air Mass • A large body of air with similar temperature, humidity, and air](https://slidetodoc.com/presentation_image_h/f6e883515053080f3e1468d8c0f8c77f/image-2.jpg)
![• Whether an air mass is warm or cold depends on the temperature • Whether an air mass is warm or cold depends on the temperature](https://slidetodoc.com/presentation_image_h/f6e883515053080f3e1468d8c0f8c77f/image-3.jpg)
![Continental • Means land. • A Continental air mass forms over land. Weather Fronts Continental • Means land. • A Continental air mass forms over land. Weather Fronts](https://slidetodoc.com/presentation_image_h/f6e883515053080f3e1468d8c0f8c77f/image-4.jpg)
![Maritime • Means water. • Maritime air masses form over water. MAP TAP 2002 Maritime • Means water. • Maritime air masses form over water. MAP TAP 2002](https://slidetodoc.com/presentation_image_h/f6e883515053080f3e1468d8c0f8c77f/image-5.jpg)
![Polar • Polar means it forms over the poles. • COLD! MAP TAP 2002 Polar • Polar means it forms over the poles. • COLD! MAP TAP 2002](https://slidetodoc.com/presentation_image_h/f6e883515053080f3e1468d8c0f8c77f/image-6.jpg)
![Tropical • Form over the tropics (near the equator) • WARM!! MAP TAP 2002 Tropical • Form over the tropics (near the equator) • WARM!! MAP TAP 2002](https://slidetodoc.com/presentation_image_h/f6e883515053080f3e1468d8c0f8c77f/image-7.jpg)
![MAP TAP 2002 -2003 Weather Fronts 8 MAP TAP 2002 -2003 Weather Fronts 8](https://slidetodoc.com/presentation_image_h/f6e883515053080f3e1468d8c0f8c77f/image-8.jpg)
![Fronts • Where air masses meet but do not mix due to different temperatures Fronts • Where air masses meet but do not mix due to different temperatures](https://slidetodoc.com/presentation_image_h/f6e883515053080f3e1468d8c0f8c77f/image-9.jpg)
![Fronts • 4 kinds of fronts: – Cold front – Warm front – Occluded Fronts • 4 kinds of fronts: – Cold front – Warm front – Occluded](https://slidetodoc.com/presentation_image_h/f6e883515053080f3e1468d8c0f8c77f/image-10.jpg)
![Cold Front • A cold air mass is replacing a warmer air mass. • Cold Front • A cold air mass is replacing a warmer air mass. •](https://slidetodoc.com/presentation_image_h/f6e883515053080f3e1468d8c0f8c77f/image-11.jpg)
![Cold Front • Rapidly moving cold air mass runs into a slowly moving warm Cold Front • Rapidly moving cold air mass runs into a slowly moving warm](https://slidetodoc.com/presentation_image_h/f6e883515053080f3e1468d8c0f8c77f/image-12.jpg)
![Fronts: Five Types of Fronts 1. Cold Front: The zone where cold air is Fronts: Five Types of Fronts 1. Cold Front: The zone where cold air is](https://slidetodoc.com/presentation_image_h/f6e883515053080f3e1468d8c0f8c77f/image-13.jpg)
![Cold Front • Cold fronts move quickly and can cause abrupt weather changes including Cold Front • Cold fronts move quickly and can cause abrupt weather changes including](https://slidetodoc.com/presentation_image_h/f6e883515053080f3e1468d8c0f8c77f/image-14.jpg)
![Warm Front • Warm air mass • collides with a slowly moving cooler air Warm Front • Warm air mass • collides with a slowly moving cooler air](https://slidetodoc.com/presentation_image_h/f6e883515053080f3e1468d8c0f8c77f/image-15.jpg)
![Warm Front • Moving warm air mass collides with a slowly moving cold air Warm Front • Moving warm air mass collides with a slowly moving cold air](https://slidetodoc.com/presentation_image_h/f6e883515053080f3e1468d8c0f8c77f/image-16.jpg)
![Fronts: Five Types of Fronts 2. Warm Front: The zone where warm air is Fronts: Five Types of Fronts 2. Warm Front: The zone where warm air is](https://slidetodoc.com/presentation_image_h/f6e883515053080f3e1468d8c0f8c77f/image-17.jpg)
![Comparing Warm and Cold Fronts • Cold fronts move faster than warm fronts. • Comparing Warm and Cold Fronts • Cold fronts move faster than warm fronts. •](https://slidetodoc.com/presentation_image_h/f6e883515053080f3e1468d8c0f8c77f/image-18.jpg)
![Occluded Fronts • When a warm • front is trapped by 2 cold fronts. Occluded Fronts • When a warm • front is trapped by 2 cold fronts.](https://slidetodoc.com/presentation_image_h/f6e883515053080f3e1468d8c0f8c77f/image-19.jpg)
![Occluded Fronts • A warm air mass is caught between two cooler air masses. Occluded Fronts • A warm air mass is caught between two cooler air masses.](https://slidetodoc.com/presentation_image_h/f6e883515053080f3e1468d8c0f8c77f/image-20.jpg)
![Fronts: Five Types of Fronts 4. Occluded Front: Formed when a cold front overtakes Fronts: Five Types of Fronts 4. Occluded Front: Formed when a cold front overtakes](https://slidetodoc.com/presentation_image_h/f6e883515053080f3e1468d8c0f8c77f/image-21.jpg)
![Stationary Fronts • A front that stops moving or is moving very slowly. • Stationary Fronts • A front that stops moving or is moving very slowly. •](https://slidetodoc.com/presentation_image_h/f6e883515053080f3e1468d8c0f8c77f/image-22.jpg)
![Stationary Fronts • Where the warm and cool air meet, water vapor in the Stationary Fronts • Where the warm and cool air meet, water vapor in the](https://slidetodoc.com/presentation_image_h/f6e883515053080f3e1468d8c0f8c77f/image-23.jpg)
![Fronts: Five Types of Fronts 3. Stationary Front: When either a cold or warm Fronts: Five Types of Fronts 3. Stationary Front: When either a cold or warm](https://slidetodoc.com/presentation_image_h/f6e883515053080f3e1468d8c0f8c77f/image-24.jpg)
![Locate the 4 types of fronts on this weather map. Locate the 4 types of fronts on this weather map.](https://slidetodoc.com/presentation_image_h/f6e883515053080f3e1468d8c0f8c77f/image-25.jpg)
![Cold Fronts Cold Fronts](https://slidetodoc.com/presentation_image_h/f6e883515053080f3e1468d8c0f8c77f/image-26.jpg)
![Warm Front Warm Front](https://slidetodoc.com/presentation_image_h/f6e883515053080f3e1468d8c0f8c77f/image-27.jpg)
![Stationary Front Stationary Front](https://slidetodoc.com/presentation_image_h/f6e883515053080f3e1468d8c0f8c77f/image-28.jpg)
![Occluded Front Occluded Front](https://slidetodoc.com/presentation_image_h/f6e883515053080f3e1468d8c0f8c77f/image-29.jpg)
![Be a Weather Forecaster You are planning to travel to Alabama in 2 days. Be a Weather Forecaster You are planning to travel to Alabama in 2 days.](https://slidetodoc.com/presentation_image_h/f6e883515053080f3e1468d8c0f8c77f/image-30.jpg)
![Be a Weather Forecaster There is a cold front approaching. The temperatures will probably Be a Weather Forecaster There is a cold front approaching. The temperatures will probably](https://slidetodoc.com/presentation_image_h/f6e883515053080f3e1468d8c0f8c77f/image-31.jpg)
![Be a Weather Forecaster • Of course, meteorologists (weather forecasters) use much more data Be a Weather Forecaster • Of course, meteorologists (weather forecasters) use much more data](https://slidetodoc.com/presentation_image_h/f6e883515053080f3e1468d8c0f8c77f/image-32.jpg)
- Slides: 32
![Air Masses and Fronts Science 6 th Grade Air Masses and Fronts Science 6 th Grade](https://slidetodoc.com/presentation_image_h/f6e883515053080f3e1468d8c0f8c77f/image-1.jpg)
Air Masses and Fronts Science 6 th Grade
![Air Mass A large body of air with similar temperature humidity and air Air Mass • A large body of air with similar temperature, humidity, and air](https://slidetodoc.com/presentation_image_h/f6e883515053080f3e1468d8c0f8c77f/image-2.jpg)
Air Mass • A large body of air with similar temperature, humidity, and air pressure. • Air masses form over large land or water masses. MAP TAP 2002 -2003 Weather Fronts 2
![Whether an air mass is warm or cold depends on the temperature • Whether an air mass is warm or cold depends on the temperature](https://slidetodoc.com/presentation_image_h/f6e883515053080f3e1468d8c0f8c77f/image-3.jpg)
• Whether an air mass is warm or cold depends on the temperature over which the mass forms. • 4 types of air masses 1. Tropical – warm air masses that form over the tropics. 2. Polar – cold air masses that form over the poles. 3. Maritime – air masses that form over the ocean (very humid) 4. Continental – form over land – (are dry) MAP TAP 2002 -2003 Weather Fronts 3
![Continental Means land A Continental air mass forms over land Weather Fronts Continental • Means land. • A Continental air mass forms over land. Weather Fronts](https://slidetodoc.com/presentation_image_h/f6e883515053080f3e1468d8c0f8c77f/image-4.jpg)
Continental • Means land. • A Continental air mass forms over land. Weather Fronts 4
![Maritime Means water Maritime air masses form over water MAP TAP 2002 Maritime • Means water. • Maritime air masses form over water. MAP TAP 2002](https://slidetodoc.com/presentation_image_h/f6e883515053080f3e1468d8c0f8c77f/image-5.jpg)
Maritime • Means water. • Maritime air masses form over water. MAP TAP 2002 -2003 Weather Fronts 5
![Polar Polar means it forms over the poles COLD MAP TAP 2002 Polar • Polar means it forms over the poles. • COLD! MAP TAP 2002](https://slidetodoc.com/presentation_image_h/f6e883515053080f3e1468d8c0f8c77f/image-6.jpg)
Polar • Polar means it forms over the poles. • COLD! MAP TAP 2002 -2003 Weather Fronts 6
![Tropical Form over the tropics near the equator WARM MAP TAP 2002 Tropical • Form over the tropics (near the equator) • WARM!! MAP TAP 2002](https://slidetodoc.com/presentation_image_h/f6e883515053080f3e1468d8c0f8c77f/image-7.jpg)
Tropical • Form over the tropics (near the equator) • WARM!! MAP TAP 2002 -2003 Weather Fronts 7
![MAP TAP 2002 2003 Weather Fronts 8 MAP TAP 2002 -2003 Weather Fronts 8](https://slidetodoc.com/presentation_image_h/f6e883515053080f3e1468d8c0f8c77f/image-8.jpg)
MAP TAP 2002 -2003 Weather Fronts 8
![Fronts Where air masses meet but do not mix due to different temperatures Fronts • Where air masses meet but do not mix due to different temperatures](https://slidetodoc.com/presentation_image_h/f6e883515053080f3e1468d8c0f8c77f/image-9.jpg)
Fronts • Where air masses meet but do not mix due to different temperatures and densities. becomes a front MAP TAP 2002 -2003 Weather Fronts 9
![Fronts 4 kinds of fronts Cold front Warm front Occluded Fronts • 4 kinds of fronts: – Cold front – Warm front – Occluded](https://slidetodoc.com/presentation_image_h/f6e883515053080f3e1468d8c0f8c77f/image-10.jpg)
Fronts • 4 kinds of fronts: – Cold front – Warm front – Occluded front – Stationary front MAP TAP 2002 -2003 Weather Fronts 10
![Cold Front A cold air mass is replacing a warmer air mass Cold Front • A cold air mass is replacing a warmer air mass. •](https://slidetodoc.com/presentation_image_h/f6e883515053080f3e1468d8c0f8c77f/image-11.jpg)
Cold Front • A cold air mass is replacing a warmer air mass. • Shown on a weather map by a blue line with triangles pointing the direction the cool air is moving.
![Cold Front Rapidly moving cold air mass runs into a slowly moving warm Cold Front • Rapidly moving cold air mass runs into a slowly moving warm](https://slidetodoc.com/presentation_image_h/f6e883515053080f3e1468d8c0f8c77f/image-12.jpg)
Cold Front • Rapidly moving cold air mass runs into a slowly moving warm air mass. • The denser cold air slides under the lighter warm air pushing it upward. • The rising air cools and condenses, forming clouds. • Heavy rain or snow may fall. • If the warm air mass contains only a little water vapor, there may be only cloudy skies. MAP TAP 2002 -2003 Weather Fronts 12
![Fronts Five Types of Fronts 1 Cold Front The zone where cold air is Fronts: Five Types of Fronts 1. Cold Front: The zone where cold air is](https://slidetodoc.com/presentation_image_h/f6e883515053080f3e1468d8c0f8c77f/image-13.jpg)
Fronts: Five Types of Fronts 1. Cold Front: The zone where cold air is replacing warmer air • Air gets drier after a cold front moves through NSF North Mississippi GK-8
![Cold Front Cold fronts move quickly and can cause abrupt weather changes including Cold Front • Cold fronts move quickly and can cause abrupt weather changes including](https://slidetodoc.com/presentation_image_h/f6e883515053080f3e1468d8c0f8c77f/image-14.jpg)
Cold Front • Cold fronts move quickly and can cause abrupt weather changes including violent thunderstorms • After a cold front passes through, cool, dry air moves in. • Clear skies and cooler temperatures often follow. MAP TAP 2002 -2003 Weather Fronts 14
![Warm Front Warm air mass collides with a slowly moving cooler air Warm Front • Warm air mass • collides with a slowly moving cooler air](https://slidetodoc.com/presentation_image_h/f6e883515053080f3e1468d8c0f8c77f/image-15.jpg)
Warm Front • Warm air mass • collides with a slowly moving cooler air mass. Shown on a weather map by a red line with half circles pointing the direction the warm air is moving. MAP TAP 2002 -2003 Weather Fronts 15
![Warm Front Moving warm air mass collides with a slowly moving cold air Warm Front • Moving warm air mass collides with a slowly moving cold air](https://slidetodoc.com/presentation_image_h/f6e883515053080f3e1468d8c0f8c77f/image-16.jpg)
Warm Front • Moving warm air mass collides with a slowly moving cold air mass. • The warm air moves over the denser cold air. • If the warm air is humid, showers and light rain fall along the front where the warm and cold air meet. • If the warm air is dry scattered clouds form. MAP TAP 2002 -2003 Weather Fronts 16
![Fronts Five Types of Fronts 2 Warm Front The zone where warm air is Fronts: Five Types of Fronts 2. Warm Front: The zone where warm air is](https://slidetodoc.com/presentation_image_h/f6e883515053080f3e1468d8c0f8c77f/image-17.jpg)
Fronts: Five Types of Fronts 2. Warm Front: The zone where warm air is replacing colder air • Air gets more humid after a warm front moves through NSF North Mississippi GK-8
![Comparing Warm and Cold Fronts Cold fronts move faster than warm fronts Comparing Warm and Cold Fronts • Cold fronts move faster than warm fronts. •](https://slidetodoc.com/presentation_image_h/f6e883515053080f3e1468d8c0f8c77f/image-18.jpg)
Comparing Warm and Cold Fronts • Cold fronts move faster than warm fronts. • The weather activity in a cold front is often violent and happens directly at the front. • Cold fronts have sudden gusty winds high in the air creating turbulence. • The weather activity in a warm front generally happens before the front passes. • In a warm front the cloud formation is very low often creating situations of poor visibility. MAP TAP 2002 -2003 Weather Fronts 19
![Occluded Fronts When a warm front is trapped by 2 cold fronts Occluded Fronts • When a warm • front is trapped by 2 cold fronts.](https://slidetodoc.com/presentation_image_h/f6e883515053080f3e1468d8c0f8c77f/image-19.jpg)
Occluded Fronts • When a warm • front is trapped by 2 cold fronts. Shown on a weather map by a purple line with alternating triangles and semicircles pointing the direction the front is moving. MAP TAP 2002 -2003 Weather Fronts 20
![Occluded Fronts A warm air mass is caught between two cooler air masses Occluded Fronts • A warm air mass is caught between two cooler air masses.](https://slidetodoc.com/presentation_image_h/f6e883515053080f3e1468d8c0f8c77f/image-20.jpg)
Occluded Fronts • A warm air mass is caught between two cooler air masses. • The denser cool air masses move underneath the less dense warm air and push it upward. • The temperature near the ground becomes cooler. MAP TAP 2002 -2003 Weather Fronts 21
![Fronts Five Types of Fronts 4 Occluded Front Formed when a cold front overtakes Fronts: Five Types of Fronts 4. Occluded Front: Formed when a cold front overtakes](https://slidetodoc.com/presentation_image_h/f6e883515053080f3e1468d8c0f8c77f/image-21.jpg)
Fronts: Five Types of Fronts 4. Occluded Front: Formed when a cold front overtakes a warm front • This occurrence usually results in storms over an area • In U. S. , the colder air usually lies to the west NSF North Mississippi GK-8
![Stationary Fronts A front that stops moving or is moving very slowly Stationary Fronts • A front that stops moving or is moving very slowly. •](https://slidetodoc.com/presentation_image_h/f6e883515053080f3e1468d8c0f8c77f/image-22.jpg)
Stationary Fronts • A front that stops moving or is moving very slowly. • Shown on a weather map with alternating red semicircles pointing away from the warm air and blue triangles pointing away from the cold air. MAP TAP 2002 -2003
![Stationary Fronts Where the warm and cool air meet water vapor in the Stationary Fronts • Where the warm and cool air meet, water vapor in the](https://slidetodoc.com/presentation_image_h/f6e883515053080f3e1468d8c0f8c77f/image-23.jpg)
Stationary Fronts • Where the warm and cool air meet, water vapor in the air condenses into rain, snow, fog, or clouds. • It may stall over an area and bring many days of clouds and precipitation. MAP TAP 2002 -2003 Weather Fronts 26
![Fronts Five Types of Fronts 3 Stationary Front When either a cold or warm Fronts: Five Types of Fronts 3. Stationary Front: When either a cold or warm](https://slidetodoc.com/presentation_image_h/f6e883515053080f3e1468d8c0f8c77f/image-24.jpg)
Fronts: Five Types of Fronts 3. Stationary Front: When either a cold or warm front stops moving • When the front starts moving again it returns to either being a cold or warm front NSF North Mississippi GK-8
![Locate the 4 types of fronts on this weather map Locate the 4 types of fronts on this weather map.](https://slidetodoc.com/presentation_image_h/f6e883515053080f3e1468d8c0f8c77f/image-25.jpg)
Locate the 4 types of fronts on this weather map.
![Cold Fronts Cold Fronts](https://slidetodoc.com/presentation_image_h/f6e883515053080f3e1468d8c0f8c77f/image-26.jpg)
Cold Fronts
![Warm Front Warm Front](https://slidetodoc.com/presentation_image_h/f6e883515053080f3e1468d8c0f8c77f/image-27.jpg)
Warm Front
![Stationary Front Stationary Front](https://slidetodoc.com/presentation_image_h/f6e883515053080f3e1468d8c0f8c77f/image-28.jpg)
Stationary Front
![Occluded Front Occluded Front](https://slidetodoc.com/presentation_image_h/f6e883515053080f3e1468d8c0f8c77f/image-29.jpg)
Occluded Front
![Be a Weather Forecaster You are planning to travel to Alabama in 2 days Be a Weather Forecaster You are planning to travel to Alabama in 2 days.](https://slidetodoc.com/presentation_image_h/f6e883515053080f3e1468d8c0f8c77f/image-30.jpg)
Be a Weather Forecaster You are planning to travel to Alabama in 2 days. The high temperature there for today is 68º F. Use the map to help you predict whether the temperature in Alabama will increase, decrease, or stay the same. Explain why you think so. Weather Fronts 33
![Be a Weather Forecaster There is a cold front approaching The temperatures will probably Be a Weather Forecaster There is a cold front approaching. The temperatures will probably](https://slidetodoc.com/presentation_image_h/f6e883515053080f3e1468d8c0f8c77f/image-31.jpg)
Be a Weather Forecaster There is a cold front approaching. The temperatures will probably be cooler behind the front. 34
![Be a Weather Forecaster Of course meteorologists weather forecasters use much more data Be a Weather Forecaster • Of course, meteorologists (weather forecasters) use much more data](https://slidetodoc.com/presentation_image_h/f6e883515053080f3e1468d8c0f8c77f/image-32.jpg)
Be a Weather Forecaster • Of course, meteorologists (weather forecasters) use much more data than fronts and air masses to help them forecast the weather more accurately. But any forecast is just a prediction of what might happen. Even with the best data, weather forecasts can be wrong. MAP TAP 2002 -2003 Weather Fronts 35
Mt air mass
Air mass notes
North american air masses
Why are cold fronts steeper than warm fronts
Two cold air masses converge on a warm air mass
Whats an air mass
Air masses & frontswhat is an air mass?
Air masses & frontswhat is an air mass?
A swirling center of low air pressure is called
Air masses & frontswhat is an air mass?
Air masses & frontswhat is an air mass?
Air masses & frontswhat is an air mass?
Occluded front weather
Types of air masses
Characteristics of fronts
Area of low pressure where air masses meet and rise
Air masses form in the tropics and have low pressure
Where do polar and tropical air masses develop
Source regions for air masses
Occluded front diagram
Large rotating air mass
Importance of air masses
Types of air masses
Lake effect side
Continental polar symbol
Air mass map
Warm hall
Air mass modification
What are the five types of air masses?
Air mass mt
Air masses
Air masses
Narrow region separating two air masses