atmosphere “this powerpoint puts the “phere” in other, lesser powerpoints” - ppta
TRANSCRIPT
![Page 1: Atmosphere “This PowerPoint puts the “phere” in other, lesser PowerPoints” - PPTA](https://reader036.vdocuments.site/reader036/viewer/2022070407/56649e425503460f94b34813/html5/thumbnails/1.jpg)
Atmosphere
“This PowerPoint puts the “phere” in other, lesser PowerPoints” - PPTA
![Page 2: Atmosphere “This PowerPoint puts the “phere” in other, lesser PowerPoints” - PPTA](https://reader036.vdocuments.site/reader036/viewer/2022070407/56649e425503460f94b34813/html5/thumbnails/2.jpg)
Composition of Air
• There are many different types of gasses in the atmosphere
• They include nitrogen, oxygen, argon, carbon dioxide and other noble gasses
• Nitrogen and oxygen make up 99%
![Page 3: Atmosphere “This PowerPoint puts the “phere” in other, lesser PowerPoints” - PPTA](https://reader036.vdocuments.site/reader036/viewer/2022070407/56649e425503460f94b34813/html5/thumbnails/3.jpg)
Layers of the atmosphere• There are 5 layers in the atmosphere• They are the troposphere, stratosphere, mesosphere,
thermosphere, and exosphere.
![Page 4: Atmosphere “This PowerPoint puts the “phere” in other, lesser PowerPoints” - PPTA](https://reader036.vdocuments.site/reader036/viewer/2022070407/56649e425503460f94b34813/html5/thumbnails/4.jpg)
Troposphere
• This is the layer that is closest to the surface of the earth
• It’s elevation ranges from 0 to about 17 km
• Contains most of the mass of the atmosphere
• Temperature decreases with elevation
![Page 5: Atmosphere “This PowerPoint puts the “phere” in other, lesser PowerPoints” - PPTA](https://reader036.vdocuments.site/reader036/viewer/2022070407/56649e425503460f94b34813/html5/thumbnails/5.jpg)
Stratosphere
• This layer sits on top of the troposphere
• It’s elevation ranges from 10 km to around 50 km
• This layer contains the ozone layer, which protects us from harmful UV radiation
• Ozone (O3) is also a gas emitted by cars and factories• Ozone in stratosphere = good Ozone in troposphere =
bad
![Page 6: Atmosphere “This PowerPoint puts the “phere” in other, lesser PowerPoints” - PPTA](https://reader036.vdocuments.site/reader036/viewer/2022070407/56649e425503460f94b34813/html5/thumbnails/6.jpg)
Mesosphere
• This layer is above the stratosphere
• It’s elevation ranges from 50 to 85 km
• Temperature decreases with altitude because there is very little air
• This is where most small meteorites burn up
![Page 7: Atmosphere “This PowerPoint puts the “phere” in other, lesser PowerPoints” - PPTA](https://reader036.vdocuments.site/reader036/viewer/2022070407/56649e425503460f94b34813/html5/thumbnails/7.jpg)
Thermosphere
• This is the 2nd highest layer of the atmosphere
• It’s height ranges from 85 to 600 km
• High energy radiation is absorbed causing the northern lights (aurora borealis) and an increase in temperature
![Page 8: Atmosphere “This PowerPoint puts the “phere” in other, lesser PowerPoints” - PPTA](https://reader036.vdocuments.site/reader036/viewer/2022070407/56649e425503460f94b34813/html5/thumbnails/8.jpg)
Exosphere
• Outermost layer of Earth’s Atmosphere
• Transition from atmosphere to outer space
• Often considered outer space
![Page 9: Atmosphere “This PowerPoint puts the “phere” in other, lesser PowerPoints” - PPTA](https://reader036.vdocuments.site/reader036/viewer/2022070407/56649e425503460f94b34813/html5/thumbnails/9.jpg)
Absorption and Reflection• Thanks to the Atmosphere, the amount of energy from
the Sun that actually hits warms Earth is cut in half.
![Page 10: Atmosphere “This PowerPoint puts the “phere” in other, lesser PowerPoints” - PPTA](https://reader036.vdocuments.site/reader036/viewer/2022070407/56649e425503460f94b34813/html5/thumbnails/10.jpg)
Greenhouse Effect1. Most of the visible light radiation from the Sun is invisible to gases in the atmosphere, hitting and warming the Earth.
2. The Earth then emits a low energy infrared radiation which the gases in the atmosphere are very efficient at absorbing and reflecting.
![Page 11: Atmosphere “This PowerPoint puts the “phere” in other, lesser PowerPoints” - PPTA](https://reader036.vdocuments.site/reader036/viewer/2022070407/56649e425503460f94b34813/html5/thumbnails/11.jpg)
Energy Transfer in the Atmosphere• Radiation – the transfer of
thermal energy by electromagnetic waves.
• Conduction – transfer of thermal energy between touching objects.
• Convection – transfer of thermal energy by the movement of heated material from one place to another due to density differences.
![Page 12: Atmosphere “This PowerPoint puts the “phere” in other, lesser PowerPoints” - PPTA](https://reader036.vdocuments.site/reader036/viewer/2022070407/56649e425503460f94b34813/html5/thumbnails/12.jpg)