Science Unit 2 Test

It is about the whole of unit 2

air mass

An air mass is a large body of air that has uniform temperature and humidity characteristics. It forms when air remains stationary over a region for a long period, allowing it to take on the properties of the surface below. Air masses are classified by their source regions, such as tropical (warm, moist) or polar (cold, dry), and can greatly influence local weather patterns when they move.

jet stream

An air mass is a large body of air that has uniform temperature and humidity characteristics. It forms when air remains stationary over a region for a long period, allowing it to take on the properties of the surface below. Air masses are classified by their source regions, such as tropical (warm, moist) or polar (cold, dry), and can greatly influence local weather patterns when they move.

front

A front is a boundary separating two air masses of different densities, temperatures, and humidity levels. It is where contrasting air masses meet, leading to various weather changes. There are four main types of fronts: cold fronts, warm fronts, stationary fronts, and occluded fronts. Cold fronts occur when a cold air mass pushes into a warmer air mass, causing thunderstorms, while warm fronts typically bring gradual increases in temperature and precipitation as warm air rises over cold air. Stationary fronts occur when neither air mass is strong enough to replace the other, leading to prolonged periods of cloudy and rainy weather. Occluded fronts happen when a cold front overtakes a warm front, lifting the warm air off the ground, often resulting in complex weather patterns.

cyclone

A cyclone is a large-scale air mass that rotates around a low-pressure center, characterized by inward spiraling winds. Cyclones typically form over warm ocean waters where the humidity is high and can lead to severe weather conditions, including heavy rains, thunderstorms, and strong winds. There are various types of cyclones, including tropical cyclones (hurricanes or typhoons depending on their location) and extratropical cyclones, which occur outside the tropics. Tropical cyclones are particularly intense and can cause significant damage when they make landfall, given their association with storm surges and heavy rainfall.