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Atmospheric thermodynamics

Concepts Atmosphere

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Understanding of Concepts Assessment ? The Atmosphere Name: Directions: For each of the items, provide a comprehensive summary of your understanding of the concept. Present your responses in the mode that works the best for you: paragraphs, lists, tables, concept maps, outlines, etc. You may include diagrams and illustrations if you wish. Include additional files as needed. Your responses need to be your own work. If you use photos or other graphics from the Internet, you must provide source information. A thorough response for each item will typically consist of the equivalent of several paragraphs.

Disc Amosphere

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Environmental Science Discussion Topic The Atmosphere -1 Name: Image that you are constructing responses to the following questions that others will be viewing such as blogs, forums, or similar public means. In other words, your comments need to be clear, persuasive, and well-crafted. Please proof-read and spell-check your work. Your answers can include writing, diagrams, outlines, graphics etc; however, they need to be your original work. Creativity is encouraged. It is fine to include links to supporting online references.

inorganic chemistry lab report Al-Zn alloy

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1 Experiment 7: Analysis of Aluminum ?Zinc Alloy Objective: The objective of this experiment is to determine the percent composition of Aluminum in an Aluminum-Zinc Alloy. In addition, we use Excel get the trendline equation of H2 gas and %Al. Method:

inorganic chemistry lab report Al-Zn alloy

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5 Chemistry 181 Yeting Liu Fall 2014 Thu 7:30 Experiment 7: Analysis of Aluminum ?Zinc Alloy Objective: The objective of this experiment is to determine the percent composition of Aluminum in an Aluminum-Zinc Alloy. In addition, we use Excel get the trendline equation of H2 gas and %Al. Method:

Principles of Chemistry Chapter 5

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Chapter 5: Gases Section 5.2: Pressure Sunday, October 19, 2014 12:43 PM Pressure = Force / Area ? **note: atmospheric pressure is caused by the weight of air molecules as they are attracted by gravity (hence why pressure decreases as altitude decreases) ? Measuring Pressure ? Barometer - device that measures atmospheric pressure Long tube filled with mercury, essentially you pour the mercury out of the tube until it stops because the mercury creates a seal and a vacuum in the closed end of the tube -pressure decreases cause the mercury seal to fall lower -pressure increases cause the mercury seal to fall higher ? Units of Pressure ? Pascal - (Pa) unit for pressure, equal to one Newton / meter squared --> Force / area

Gas Stoich Notes

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preAP Chemistry 2013-2014 1 Name ___________________________ Period ______ I. Avogadro?s Law ? Avogadro?s Law states that ____________ volumes of gases at the __________ temperature and pressure contain equal numbers of particles. - At STP, _________________ particles (1 mol) will have a volume of ___________ Using Avogadro?s Law EX 1: Determine the volume (in L) occupied by 212 g of oxygen at STP. EX 2: Determine the density of nitrogen at STP. II. Ideal Gas Law ? Up to now we have always kept the ______________ of gas constant. Recognize that as the amount of gas changes, its corresponding _________________ changes. (Avogadro?s Law)

Living in the Environment 16th Ed. : Ch.7 Key Terms

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Chapter 7 biomes large terrestrial regions characterized by similar climate, soil, plants, and animals, regardless of where they are found in the world. climate an area?s general pattern of atmospheric or weather conditions measured over long periods of time ranging from decades to thousands of years. currents Prevailing winds blowing over the oceans produce mass movements of surface water called currents. desert In a desert, annual precipitation is low and often scattered unevenly throughout the year. During the day, the baking sun warms the ground and causes evaporation of moisture from plant leaves and soil. But at night, most of the heat stored in the ground radiates quickly into the atmosphere. forest systems are lands dominated by trees. grasslands

Moisture

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Humidity Moisture content of the atmosphere Relative Humidity ? the percentage of saturation of the air. 50% humidity means that the air is holding half of the water it is capable of holding 100% humidity is when the air is holding all of the water vapor it can possibly hold ? air is fully saturated and probably precipitating This represents a parcel of air 20 ?C 0 ?C 10 ?C This is moisture 20 ?C HOW FULL IS IT? How could this air mass become 100% full? 10 ?C 0 ?C 20 ?C Drop its temp! What are two ways that nature changes R.H.? What is the Dew Point Temperature? The temperature to which the air mass must drop down to so that R.H is 100% At this point the air is said to be SATURATED

Weather

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What are 3 major variables that affect our weather? WATCH THE VIDEO! Factors that affect Temperature What is moisture? Water found in one of its three forms: 1. SOLID (ICE/SNOW) 2. LIQUID (RAIN) 3. GAS (WATER VAPOR) Precipitation is moisture that FALLS from the atmosphere above. Precipitation cleans the atmosphere of condensation nuclei Why does precipitation occur? Air can only hold a certain amount of water vapor before it will overfill and condense This is known as capacity ROOM FOR ONE MORE???? What temp. air can hold more W.V.? Warm air can hold MORE water vapor WHY????? Cold air holds LESS water vapor Every 10 degree Celsius increase doubles the air?s capacity Every 10 degree Celsius decrease cuts capacity in half * * * * * * * * * * * * *

Air Pressure

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Air Pressure The weight of the air above Earth?s surface Thanks to gravity, the atmosphere has weight. What affects air pressure? Altitude ? air pressure decreases the higher you go up 2 miles up Sea level Decreasing Air Pressure Higher Concentration of air molecules Gravity forces most air molecules to remain close to Earth?s surface Cold air is more dense than warm air Cold air has higher air pressure because the molecules are closer together v v COLD HOT Warm air has LESS air pressure because molecules are farther apart COLD HOT Which air mass can hold more water vapor? v v COLD HOT v v c COLD HOT Air Molecule Water Molecule Warmer air can hold more water molecules than cooler air

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