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Published byHomer Mosley
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Earth is surrounded by a mixture of gases known as the Atmosphere
Composition of the AtmosphereNitrogen – 78% Oxygen – 21% Other – 1% (Argon, CO2, Water Vapor, others)
Air Pressure Earth’s atmosphere is pulled towards Earth’s surface by gravity. Thus, the atmosphere is denser at the surface and less dense at higher altitudes.
Layers of the AtmosphereTroposphere- closest to the Earth’s surface. Where our weather occurs.
Layers of the AtmosphereStratosphere – 2nd layer. Contains the Ozone layer.
Layers of the AtmosphereMesosphere- 3rd layer, helps in protecting us from meteors.
Layers of the AtmosphereThermosphere – Farthest from the Earth’s surface. Warmest layer, Interactions with solar radiation causes the aurora borealis.
Energy in the Atmosphere
Energy in the AtmosphereAbout 50 % of incoming solar energy is absorbed by Earth’s surfaces. About 50% is reflected back into space in the form of low level infrared radiation.
Energy Transfer in the AtmosphereRadiation – the transfer by waves Convection – the transfer by air movement Conduction- the transfer by the touching of one object to another
Greenhouse Effect The process by which gases trap heat near the Earth’s surface.
The Atmosphere Honors Biology Chapter 3. Definition Layer of gases surrounding the geosphere Includes nitrogen, oxygen, carbon dioxide, and smaller amounts.
Objectives Describe the composition of Earth’s atmosphere.
Earth’s Atmosphere atmosphere water vapor troposphere stratosphere
6-4.1 Atmospheric layers Compare the composition and structure of Earth’s atmospheric layers (including the gases and differences in temperature and pressure.
Layers of the Atmosphere SC SC Layers of the Atmosphere The atmosphere is the layer of gases that surrounds the planet and makes conditions.
Earth’s Changing Atmosphere. Main Topics Definition and Characteristics of the Atmosphere Changes to the Atmosphere composition Layers of the Atmosphere.
Chapter 3 Section 2.
DO NOW: COPY THIS IN COMP BOOK
Earth’s Atmosphere Why is it so important to life on Earth?
Atmosphere “This PowerPoint puts the “phere” in other, lesser PowerPoints” - PPTA.
The Atmosphere “Vapor Globe/Ball”. Composition 78% Nitrogen 21% Oxygen 1% Other (Argon, Carbon Dioxide, Water Vapor, other gases) 78% Nitrogen.
The Atmosphere. Composition Nitrogen Oxygen Other –Argon –Carbon Dioxide –Methane –Water Vapor Atmospheric dust.
The Atmosphere Miss Napolitano & Mrs. Rodriguez Environmental Science.
Composition of the Atmosphere A mixture of chemical elements and compounds: –Nitrogen (N 2 ) ~ 78% –Oxygen (O 2 ) ~ 21% –Other gases ~ 1%
Do Now 1. What is the atmosphere? 2.What are the main gases that compose the atmosphere?
Atmospheric Basics Section 11.1 Section Atmospheric Composition Energy is transferred throughout Earth’s atmosphere Energy is transferred throughout.
The Atmosphere Chapter 17. Composition – What’s in the air? Earths atmosphere is a mixture of gases that has changed over time The atmosphere did not.
The Earth’s Atmosphere
The Atmosphere Aim: How are the layers of the atmosphere organized?
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