Good luck on your chapter quiz! Hi there, Wonder Friend Sara! We hope you are staying warm in Minnesota! We feel so lucky! We think you and Wonder Friend Cherry could swap places for a day-- and you'd both be happy!
Hey Wonder Friend Cherry! We bet it's lovely in California, but we can imagine it would be nice to see snow once in a while! We bet it would be cool to switch locations with a Wonder Friend on the Northeast coast-- they have seen a few snowflakes during this time!
Or Wonder Friend Sara Hello PB Kindergarteners! We think you're right on track-- storms, snowmen, ice, mittens and things that make you chilly are excellent places to start! We bet your art is beautiful, but makes you want to drink hot cocoa!
Thanks for sharing your cool comments with us, and sharing your drawings on twitter, too! Even though the weather isn't pretty, we hope you're staying sunny and dry in Michigan, Wonder Friends in Mrs. Jones' class! Hi there, Wonder 4th graders in Mrs. Witkowski's Class! We are so glad you stopped by Wonderopolis to have fun today! Thanks for leaving a comment filled with your guesses for tomorrow! We can't wait to find out what they will be!
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Hi there, Mrs. Thanks so much for sharing about the weather where you guys live! We like to pair all sorts of neat videos with our Wonders of the Day here in Wonderopolis. Sometimes, the owners of the videos on YouTube or Vimeo might delete their accounts or change the permissions for their videos after the Wonder has been shared. We double-checked the links in today's Wonder and see that the video that goes with our "tornadoes" link isn't working.
We are on the case and will be getting a new video up soon! We feel the exact same way, aterrell! Thanks for letting us know you liked learning about cold fronts today Thanks for sharing about the weather in your part of Illinois, Hunter, and also for sharing about your dad's cool job!
We think it would be FUN to drive the machinery that helps clear the roads and makes it safer for people to travel! Hi, Gage! We're glad you're feeling better! How lucky you are to be getting some snow! There are LOTS of fun things to do on a snow day Did you know there is already a Wonder about Black Friday?
Hello from Wonderopolis, Mrs. We're so glad you guys enjoyed learning about cold fronts with us today! Happy Monday, Wilber! Thanks for sharing your personal connection to today's Wonder! We are undergoing some spring clearing site maintenance and need to temporarily disable the commenting feature. Thanks for your patience. Drag a word to its definition. You have answered 0 of 3 questions correctly and your score is:.
Want to add a little wonder to your website? Help spread the wonder of families learning together. We sent you SMS, for complete subscription please reply. Follow Twitter Instagram Facebook. What is a cold front? Does a cold front always bring precipitation? When are cold fronts most common? Wonder What's Next? Tomorrow's Wonder of the Day will help you overcome daily obstacles!
Try It Out Are you ready to predict the weather? Ask a friend or family member to help you check out the following activities: Do you keep an eye on the weather? Some people like to watch the weather forecast every day and then see if the weather forecaster was right or not. Some people watch weather shows on television like they were primetime shows! Whether pun totally intended or not you usually keep track of the weather, try to keep a weather journal for the next week.
Each day, find out what the forecast is by watching a local weather report or looking it up online. Then watch and see what happens with the weather. Record the high temperature, low temperature, and whether or not you got any precipitation rain or snow. Weather Fronts. Principle Fronts are zones of transition between two different air masses. The zone may be 20 miles across or it may be miles across, but from one side of a front to the other, one clearly would sense that the properties of an air mass had changed significantly e.
If the wedge is moving into an area of warmer air, the front is called a cold front. If the wedge is retreating and warmer air is moving into an area previously occupied by cool air, the front is termed a warm front. Figure 1 - Types of Fronts Definition Fronts are boundaries between air masses of different temperatures. Fronts are actually zones of transition, but sometimes the transition zone, called a frontal zone, can be quite sharp.
There are four types of fronts that will be described below: cold front, warm front, stationary front, and occluded front. Not all of these patterns may be obvious or even occur, but these are some signs. This results from the fact that low-level southerly winds in the "warm sector" of the cyclone rise up and over the cooler, more dense air at the surface located north of the warm front.
The lifting leads to saturation, cloud formation, and, ultimately, to some form of precipitation. Stationary Fronts Stationary front- a front that does not move or barely moves. The weather at a cold front varies with the season. Along a warm front , a warm air mass slides over a cold air mass. When warm, less dense air moves over the colder, denser air, the atmosphere is relatively stable.
Imagine that you are on the ground in the wintertime under a cold winter air mass with a warm front approaching. The transition from cold air to warm air takes place over a long distance so the first signs of changing weather appear long before the front is actually over you. Initially, the air is cold: the cold air mass is above you and the warm air mass is above it. High cirrus clouds mark the transition from one air mass to the other.
Over time, cirrus clouds become thicker and cirrostratus clouds form. As the front approaches, altocumulus and altostratus clouds appear and the sky turns gray. Since it is winter, snowflakes fall.
The clouds thicken and nimbostratus clouds form. Snowfall increases. Winds grow stronger as the low pressure approaches. As the front gets closer, the cold air mass is just above you but the warm air mass is not too far above that.
The weather worsens. As the warm air mass approaches, temperatures rise and snow turns to sleet and freezing rain. Warm and cold air mix at the front, leading to the formation of stratus clouds and fog. On the other hand, if warmer air is replacing cold air, then the front should be analyzed as a warm front. Common characteristics associated with cold fronts have been listed in the table below. Terms for using data resources.
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