PPT-Air Mixture of gases and particulates that are found in the atmosphere

Two major gases are Nitrogen 70 and Oxygen 20 Most other gases are found in varying amounts Carbon dioxide is found in increasing amounts because of human activities CO 2 raises the temperatures in the atmosphere because of a . Human activities affect the atmosphere.. The Ozone Layer: A Review. 90% of all ozone is in the stratosphere. 10% of all ozone is in the troposphere. Ozone is extremely important because it is the only gas that absorbs UV radiation from the sun and protects the Earth from its damaging effects.. and the Impact on Living Things. Earth’s Atmosphere. The gases that surround Earth (and other planets) make up the atmosphere. These gases are like an envelope that protects us from the radiation that is caused by the sun’s . Earth’s . protective bubble. NASA accessed via Wikipedia . compared to the size of the Earth (10. 4. km), the atmosphere is a thin shell (120 km).. . Earth’s Atmosphere. http://www.gsfc.nasa.gov/gsfc/earth/pinatuboimages.htm. Aziz AlSa’ad-Nasser Alabduljaleel-Abdulkareem AbuTaleb-Aziz AlOthman . 1.3 Vocabulary . Ultraviolet radiation:. rays of light that cannot be seen and that are a little bit shorter than the rays of violet light. What is the atmosphere?. Definition: The envelope of gases surrounding planet Earth.. Why do we need the atmosphere?. The atmosphere provides protection for the planet from objects in space and contains gasses that help sustain life.. Behavior of Gases Chapter 3.2 Behavior of Gases What behaviors do gases display? Do they behave the same all the time? What variables are involved with gas behavior? Variables Pressure – the amount of collisions between gas particles and walls of the container (balloon). Measured in kilopascals ( Gas Laws The atmosphere is made up of gases so we need to know the basic laws of how gases behave Gas laws describe the relationships between the 4 key parameters describing the behavior of gases Temperature (T) 7.5 Composition and Structure of the Atmosphere What is the composition of Earth’s Atmosphere? SC.6.E.7.9, LA.6.2.2.3 Composition of Earth’s Atmosphere The atmosphere is the protective covering of Earth. It keeps Earth warm and protects it from Atmosphere Essential Question: How are we changing our atmosphere? Learning Goals: Be able to identify the layers of the atmosphere. Describe what molecules make up the atmosphere. Atmosphere Atmosphere The thickness of our atmosphere is determined by two competing factors. The kinetic energy of the molecules . spreads molecules apart. Gravity . holds molecules near Earth. If it weren’t for gravity t. Particle Theory. All . matter consists of many, very small particles . The particles . are constantly moving or in a continual state of motion. . The . degree to which the particles move is determined by the amount of energy they have and their relationship to other particles. . Proportions of gases in the atmosphere. Composition and evolution of the atmosphere. Combustion of fuels. Source of atmospheric pollutants.. Most fuels may also contain some . sulfur. .. Gases from burning fuels. 3. He, . 22. Ne, . 36. Ar, . 130. Xe): isotopes not produced on Earth through radioactive decay . Radiogenic noble gases: produced from radioactive decay (. 4. He, . 40. Ar, . 136. Xe) or through nuclear reactions (. c.. 70 km (. c.. 43 mi), characterized by a relatively constant composition of its component gases. Air above a region of surface high pressure is more dense than air above . a region of surface low pressure (at the same temperature). .