03/27/22 Warm up Activity • Warm up question: What is a wave cyclone • Exit : What is the difference between a Hurricane and a Typoon • Homework – Vocabulary page 518; define and give one fact. Due 2/27 – Review Questions page 501. Due 2/25 – Review Questions page 508. Due 2/26
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6/9/2015 Warm up Activity Warm up question: What is a wave cyclone Exit: What is the difference between a Hurricane and a Typoon Homework – Vocabulary.
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04/18/23
Warm up Activity• Warm up question: What is a wave cyclone
• Exit: What is the difference between a Hurricane and a Typoon
• Homework – Vocabulary page 518; define and give one fact. Due 2/27
– Review Questions page 501. Due 2/25
– Review Questions page 508. Due 2/26
04/18/23
Essential questionI will be able to compare the
characteristic weather patterns of cold fronts with those of warm
frontsHomework
1.Vocabulary page 518; define and give one fact. Due 2/27
2.Review Questions page 501. Due 2/25
3.Review Questions page 508. Due 2/26
Link
04/18/23
Chapter 25 section 1 Vocabulary: define and write sentences or pictures: page 518
• Air Masses • Form because warm air rises at the equators and cold air sinks at the poles. There are 3 convection cells in the Northern Hemisphere and 3 in the Southern Hemisphere.
• The Earth’s rotation and land masses cause wind to blow in different directions.
• In areas with small pressure differences, the air will stay long enough to develop a uniform temp and humidity. i.e. deserts, oceans, and polar areas.
04/18/23
Section 25.1Cornell Notes
• Types of Air Masses
• Classified by the source region; Polar is cold and labeled “P”, Tropical are warm and labeled “T”, Masses that form over land are continental and labeled “c”, Masses that form over oceans are maritime and labeled “m”.
• These air masses can stay over the source region for days but will move because of wind and the Earth rotation eventually.
04/18/23
Section 25.1Cornell Notes
• North American Air Masses
• Polar Air Masses
• Affected by seven regions, but the air can change as it moves away from it’s source region.
• 3 polar masses influence North America; continental polar Canadian (cP), maritime polar Pacific (mP), maritime polar Atlantic
• Canadian moves southeast off the Canadian ice into The United States and can moves as far south as the Gulf.
04/18/23
Section 25.1Cornell Notes
• Polar Air Masses • The Pacific air mass forms in the waters near Alaska. Very moist but not extremely cold, in winter they bring snow to the Pacific Coast and in summer fog. Most moisture lost crossing the mountains and bring dry weather to the Mid U.S.
• The Atlantic air mass normally moves off towards Europe, but sometimes in the winter brings cold cloudy weather to New England, in the summer cool and foggy weather.
04/18/23
Section 25.1Cornell Notes
• Tropical Air Masses
• 4 influence North America; Continental Tropical, maritime tropical gulf, maritime tropical Atlantic, and maritime tropical Pacific.
• cT comes from the Deserts of Northern Mexico and bring clear, dry and very hot weather.
• mT Atlantic and Gulf bring mild cloudy weather in winter and hot humid weather, thunderstorms and hurricanes in the summer.
• mT pacific rarely reach the coast, but in the winter can bring heavy rain and thunderstorms.
04/18/23
Chapter 25 section 2 Vocabulary: define and write sentences
1. Front
2. Cold front
3. Squall line
4. Warm front
5. Stationary front
6. Occluded front
7. Polar front
8. Wave cyclones
9. Anticyclones
10.Hurricane
11.Typhoons
12.Thunderstorm
13.Tornado
14.Waterspouts
Essential Question
• Compare the characteristic weather patterns of cold fronts and warm fronts
04/18/23
04/18/23
Section 25.2
• What is a Front
• What are the types of fronts
04/18/23
Section 25.2• Fronts
• Types of Fronts
• A boundary between
air masses• Cold Front – Cold air overtakes warm
air and lifts the warm air – a squall line forms on this front
• Warm Front – Warm air overtakes cold and rises in a gradual slope
• Stationary Front – is when the air masses are not displaced
• Occluded Front – is when a cold front push the warm air completely off the ground
04/18/23
Section 25.2Cornell Notes
• What are Polar Fronts and Wave Cyclones
04/18/23
Section 25.2Cornell Notes• Polar
Fronts
• Wave Cyclones
• A Polar front circles the earth at 40 to 60 degrees latitude in both hemispheres.
• In winter it is in the Middle of North America .
• In Summer it is North of the Great lakes• The boundary along a polar front is
where wave cycles form. They can grow to 2,500 km in diameter, with winds that blow in an upward circle path around the low pressure center. They have major influences on our weather.