Where do violent storms generally form along?
Where do violent storms generally form along?
Chapter 11 Science Review
| A | B |
|---|---|
| An air mass that forms off the SE coast of the US is…? | warm and moist |
| Violent storms generally form along what kind of front? | a cold front |
| Water can form on surfaces at night when the air is clear because of what? | air near the ground cools to its dew point |
Why do severe storms occur along fronts?
Along warm fronts, warm air displaces cold air and following the passage of a warm front, the temperature rises. Violently rising air ahead of cold fronts often leads to powerful thunderstorms, especially in the summertime. Cold fronts occur along the leading edge of cold air masses.
Where do fronts form?
Warm fronts often form on the east side of low-pressure systems where warmer air from the south is pushed north. You will often see high clouds like cirrus, cirrostratus, and middle clouds like altostratus ahead of a warm front. These clouds form in the warm air that is high above the cool air.
Which types of front produce thunderstorms?
There are four types of weather fronts that cause thunderstorms: cold front, warm front, stationary front and occluded front. Thunderstorms can become extremely severe and can appear seemingly out of nowhere along a front line.
What are three factors that often change a front?
Fronts
- Sharp temperature changes over a relatively short distance.
- Change in moisture content.
- Rapid shifts in wind direction.
- Pressure changes.
- Clouds and precipitation patterns.
What are the 3 types of fronts?
There are four basic types of fronts, and the weather associated with them varies.
- Cold Front. A cold front is the leading edge of a colder air mass.
- Warm Front. Warm fronts tend to move slower than cold fronts and are the leading edge of warm air moving northward.
- Stationary Front.
- Occluded Front.
What do cold fronts bring?
Cold fronts usually bring cooler weather, clearing skies, and a sharp change in wind direction.
What happens to the weather when two different air masses collide?
When two different air masses come into contact, they don’t mix. As it rises, the warm air cools rapidly. This configuration, called a cold front, gives rise to cumulonimbus clouds, often associated with heavy precipitation and storms.
Which kind of front brings several days of wet weather?
A stationary front may bring days of rain, drizzle, and fog. Winds usually blow parallel to the front, but in opposite directions. After several days, the front will likely break apart. When a cold air mass takes the place of a warm air mass, there is a cold front.
What produces overcast weather and drizzling rain that last for several days?
If enough water vapor is in the warm air, light rain or snow will fall. Because warm fronts move slowly, the weather may be cloudy or rainy for several days. The warm air mass rises as the cool air masses push and meet in the middle.
Which front moves the fastest?
Cold fronts
What kind of front brings rain showers but not generally heavy rain?
Cold Fronts occur when a colder air mass __________a warmer air mass. This can create a short ________of heavy rain and strong____________. Warm Fronts move slower than cold air__________. A warm front will steadily rise _________the cooler air and create gentle rain showers.
What are the characteristics of low pressure?
A low pressure system has lower pressure at its center than the areas around it. Winds blow towards the low pressure, and the air rises in the atmosphere where they meet. As the air rises, the water vapor within it condenses, forming clouds and often precipitation.
What does a low pressure system bring?
A low pressure system is a whirling mass of warm, moist air that generally brings stormy weather with strong winds. When viewed from above, winds spiral into a low-pressure center in a counterclockwise rotation in the Northern Hemisphere.
What is the movement of air from high to low pressure called?
pressure gradient