Cold Front:When a fast moving mass of cold air meets a slow moving warm air mass, the cold air will remain closer to the ground and lower the temperature of the warmer air. Water Vapor in the air can form cumulonimbus clouds, resulting in abrupt weather changes like thunderstorms or heavy rain or snow.
Warm Front:When a fast moving mass of warm air and a slow moving mass of warm air meet, the warm air will rise above th cool air and likely push it slightly.It is likely accompanied by rain or showers wherever the warm or cold air meet. It may be rainy or foggy for several days.
Stationary Front:Sometimes when warm and cool air masses meet, neither can prevail over the other. Where they meet, rain, snow fog or clouds often form.It can remain this way for several days.
Occluded Front:When a warm air mass is trapped between two cooler air masses, the cool air masses push the warm air mass upward, then meeting and mixing in the middle. The area is cooler near the surface and it may become cloudy, rainy or snowy.
Which type of front occurred this week to bring the cold weather and then snow?: Though either a cold front, stationary front or an occluded front could be causing this weather, I am guessing it was caused by a cold front because the area seemed to remain very cold for several days.
Monday, December 8, 2008
Thursday, November 20, 2008
Lima,Peru 10 S, Cape Town, South Africa 35S
Trip Itinerary and approximate latitude: Lima,Peru 10 S, Cape Town, South Africa 35S
Travel time:15 days
Direction traveling:S,NE
Were you successful?yes
How many attempts?4
How were you successful? I stayed as close as I could to the South American coast and when I got to open sea, I went strait for Africa.
What winds did you take advantage of or compete with during your travel? I took advantage of the prevailing westerlies, which carried me East
Travel time:15 days
Direction traveling:S,NE
Were you successful?yes
How many attempts?4
How were you successful? I stayed as close as I could to the South American coast and when I got to open sea, I went strait for Africa.
What winds did you take advantage of or compete with during your travel? I took advantage of the prevailing westerlies, which carried me East
Hanava,Cuba 25 N, London, England 50 N
Trip Itinerary and approximate latitude: Hanava,Cuba 25 N, London, England 50 N
Travel time: 9 days
Direction traveling: NE
Were you successful? yes
How many attempts? 3
How were you successful? I stayed slightly to the south so I wouldn't accidentally land somewhere else.
What winds did you take advantage of or compete with during your travel? I used the Prevailing Westerlies to get to my destination.
Travel time: 9 days
Direction traveling: NE
Were you successful? yes
How many attempts? 3
How were you successful? I stayed slightly to the south so I wouldn't accidentally land somewhere else.
What winds did you take advantage of or compete with during your travel? I used the Prevailing Westerlies to get to my destination.
San Fransico, 45 N, to Sydney Australia, 38 S
Trip Itinerary and approximate latitude: San Fransico, 45 N, to Sydney Australia, 38 S
Travel time: 17 days
Direction traveling: SW
Were you successful? Yes
How many attempts? 3
How were you successful? I followed the winds
What winds did you take advantage of or compete with during your travels? I took advantage of both of the trade winds. The northern trade winds took me directly to my destination while the southern ones pushed me North.
Travel time: 17 days
Direction traveling: SW
Were you successful? Yes
How many attempts? 3
How were you successful? I followed the winds
What winds did you take advantage of or compete with during your travels? I took advantage of both of the trade winds. The northern trade winds took me directly to my destination while the southern ones pushed me North.
Tuesday, November 18, 2008
Thursday, November 6, 2008
Wednesday, October 29, 2008
As you probably know, Earths atmosphere acts as as a blanket of gases that surrounds it. The atmosphere makes Earth very different from the moon or a planet that has no atmosphere such as Mars. If you have ever gazed up at the moon, one of the first things that you probably noticed was the massive craters covering it's surface. These craters mostly came to be because the moon has no atmosphere. When meteoroids move towards Earth, the atmosphere will usually cause it to burn up or explode. This way, It is less likely to cause major damage on Earths surface. Planets that do not have atmospheres cannot stop such damage from occurring. Another reason that Earth is not covered in craters is the factor of weather which is made possible by the atmosphere. When Lance Armstrong first set foot on the moon, he left a footprint there. Because the Moon has no atmosphere and therefore no weather, that footprint will remain on it's surface for a long time. In the rare occasion that a large crater is left on Earth, the weather will wash away. The atmosphere also provides us with oxygen which animals need to live so life as we know it on a planet with no atmosphere is simply not possible.
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