Videos

Atmosphere Review

Added May 02, 2019 •

Copy this URL:
Embed code:	<iframe class="edlio-embed-player" type="text/html" width="640" height="360" src="//www.bvps.org/apps/embed/?v=216514" frameborder="0" allowfullscreen></iframe> Change dimensions

Show Transcript

today's topic focuses on the atmosphere to help us get ready to talk about the atmosphere let's watch this video dear Tim and Moby what is the atmosphere why is the sky blue nitrogen and oxygen habitat for plants and animals mascara has five layers the troposphere the stratosphere the mesosphere the thermosphere exosphere the troposphere is the lowest layer what's the weather like in stick to this layer the troposphere extends 16 kilometers above ground at the equator in kilometers from the top of the troposphere Stratosphere where the temperature increase with altitude this happens because the stratosphere is heated from above by the sun's ultraviolet radiation where is found in the stratosphere absorbs UV rays and protects us from too much salt pollution is created holes in the ozone layer over the North and South Poles mesosphere is found above ground temperature in the mesosphere this is also the layer in which a lot of debris from friction with the Earth's atmosphere the thermosphere is the fourth layer of the Earth's atmosphere and also the hottest the air is so not much solar radiation can be absorbed temperature climbs almost 2000 degrees Celsius the Earth's thermosphere also charged particles 500 km above Earth the exosphere is the highest layer of our atmosphere all right why is the sky blue different colors based on its wavelength scattered the most efficient that's why the sky appears to be blue so let's go back and let's Jones Nets so first of all that bottom layer the layer closest to us is called the trumpet this ain't the troposphere is right on top of our heads and this is where weather occurs the next layer up is the stratosphere the mesosphere the thermosphere and finally the exosphere one layer that they briefly mentioned but it's not labeled on here cuz it's actually part of the thermosphere is the ionosphere how do you remember these in order starting from the very very bottom one that's right on top of our head going into outer space plus you remember to try spicy mustard Thursday it's you coming the layers of the atmosphere in order starting at the bottom so T is for try T is for trophy sphere spices for Stratosphere mustard is from mesosphere tees for thermosphere it's an excess fear is excellent when we talk about the layers of the atmosphere we need to talk about the weather that's found in the troposphere the first thing I'm going to talk of are clouds cool little supposed to be cloudy what are Mike made of cotton the air around us is full of water vapor smoke it's really cold ice crystals instead of water 5 Second of the cloud is made of tiny ice crystals are puffy and arms stratus clouds form in layers you sometimes see in the morning is made of stratus clouds these combinations of all these clouds in the sky different shapes sizes and Shades of Grey wow you really got into those clouds sure I can definitely see the difference the first type of cloud is a cirrus Cirrus white very clear. sun shining typically with these clouds next Stratus these are wide blanket gray cuz they're so thick then you got the stratocumulus these are grey low in the sky Shameless are puffy flat bottoms loans that you typically cumulonimbus thunderstorm clouds auctioneers clouds are typically dark that means the storm is quickly coming denial to do just a quick General overview about weather 4 weather forecast are there lots of places where you can get the weather for free right no they actually use state-of-the-art technology in computer models that's not a very nice thing to say about Al Roker dear Tim and Moby what is weather sincerely basically what is the condition of the atmosphere at a certain place and time well the weather depends on a lot of factors there's temperature you probably all know about that it's a measure of how hot or cold air receives from the Sun temperature is measured in degrees Celsius or Fahrenheit temperature is related to another humidity humidity is the amount of water vapor in the air if the air around us is full of water you can't usually see it operates from lakes rivers oceans from trees are two types of humidity is a measure of how much water vapor the air can hold relative humidity is a measure of how much moisture there actually is in the air it's expressed as a percentage of the absolute humidity 100% is totally saturated with water heavy sticky and uncomfortable that's right when the humidity gets near 100% any more moisture if the temperature Falls at this point the water vapor starts returning to its original liquid state the process called condensation when condensation happens close to the ground in producing mist or fog eventually to Earth as rain snow or hail air pressure you might not realize it but Ashley has a weight measure air pressure for the device called a barometer pressure the Earth's surface high pressure areas are associated with clear pressure pressure is green clouds precipitation when you look at a weather map you'll see all the different areas of high and low pressure marked with big itches and Al's moving around a high pressure area Thursday the boundaries between easier masses are cold fronts or heavy storms anniversary anyway long term weather patterns determines climate areas near the equator climate Cloud River sign up for your site must be really dead is general terms about whether down first of all was temperature a measure of how hot or cold the air is next humidity is the amount of water vapor in the air two types of humidity salute which is a measure of actually how much water vapor in the air is capable of holding versus relative humidity which is how much is actually there it's capable of but it's actually there condensation is when water vapor cools number condensation there's always water vapor in the air as the air cools vapor turns back to a liquid and that can give us rain snow sleet hail the weight of the air around you is air pressure high pressure means that that there's a law are pushing down low pressure there's not very much are pushing down air mass is a large body of air that has relatively uniform temperature and humidity fronts are boundaries between air masses two things they didn't talk about hurricanes and tornadoes that a lot of Sol questions when it comes to weather deal with the difference between the two hurricanes are severe storms that form over warm water the key there a hurricane has to have warm water and it will not form over cold water so that's why hurricanes form around the equator and then they'll travel up as they travel up they start to lose steam they lose energy because the water shark School tornadoes are severe storm that forms over land both of these produce violent winds hurricanes over tornado happens over hair overlay next are some tools first of all a rain gauge measures the amount of rainfall in El just collect the amount of typically looks like a long tube thermometer y'all thermometers remember thermometers there three temperature scales Fahrenheit Celsius Kelvin Fahrenheit Celsius it's used all over the world is starts with the freezing point 04 water and boiling point whereas use in Fahrenheit number are magic number to get out of school so and then Kelvin it's absolutely year micrometer measures the amount of water vapor and that's easy hygro or like hydrophilic hydrogen water monitor is measures Wednesday barometer measures air pressure so let's talk about some of the symbols you're going to stay now I know on your sheet music is not blue so either use a blue color pencil blue marker or just right blue beside the H but this mean high pressure pressure gives us any clear skies are just say happy weather sunny clear sky but it's just happy whether you're not going to get a lot of rain which is the Big Al the cell needs that's the right beside it right red versus low pressure just remember low pressure is for lousy weather over here to help us remember low pressures are cloudy their stormy skies strong winds spiral counter-clockwise warm moist is not going to be a good day to be outside then we have our fronts remember Franta where two air masses meet so the first this needs to be red so upper right red see how they kind of look like Sunshine's so this is a warm air from This Means War air mass is replacing a cold air mass that is you're going to have to petition it's not severe it's just going to be widespread continuous next of the cold front that these are blue typically they look like upside-down bicycles and that's how I remember it but that means the pressure increases would I are the problem is more stairs push up over that cold air at the very along the very edge of this severe storms that rolls out quick so it's a quick severe storm and then you're happy whether it clears out so but the thing you have to remember with the very edge of the cold front we're going to have some severe storms weather severe snow storm this thing is orange and this is called an occluded front you have two cold air masses and a sandwich a warm air mass pushes the warm air mass over the cold are very very quickly and when this occurs thundershowers in after the guys usually last but not least is your stationary front it's red and blue and what this means is you have a cold neither one is strong enough to push the other one out so it's going to rain for days on end we've had a lot of that this was just rainy day in and day out stationary fronts. Sweater

Uploaded by Carmen Harper.

Videos

Atmosphere Review

More videos from Carmen Harper