9 th  Grade Chapter 3 Lesson 1 Pgs. 51-56 (Stop at Air Masses) For Student Use Only
Weather <ul><li>Understanding Weather </li></ul><ul><ul><li>Weather: state of the Earth’s atmosphere at a certain time and...
Weather <ul><li>Meteorology: </li></ul><ul><ul><li>Meteorology: the study of weather and the atmospheric conditions that p...
Weather <ul><li>Thermal Energy: </li></ul><ul><ul><li>Comes from the sun </li></ul></ul><ul><ul><ul><li>Absorbing heat fro...
Weather <ul><li>Uneven Distribution: </li></ul><ul><ul><li>23 ½ ° Tilt causes: Uneven Heating </li></ul></ul><ul><ul><ul><...
Weather <ul><li>Water Vapor: </li></ul><ul><ul><li>Troposphere is consists of up to 4% water vapor </li></ul></ul><ul><ul>...
Weather <ul><li>Evaporation: </li></ul><ul><ul><li>The process by which a molecule of a liquid becomes a gas. </li></ul></...
Weather <ul><li>Evaporation: </li></ul><ul><ul><li>Heat of Vaporization- extra energy gained by evaporating molecules </li...
Weather <ul><li>Condensation: </li></ul><ul><ul><li>When water vapor condenses it releases energy into its surroundings </...
Weather <ul><li>Condensation: </li></ul><ul><ul><li>Dew Point: The temperature at which water vapor in the air begins to c...
Weather <ul><li>Condensation: </li></ul><ul><ul><li>Dew- water vapor that condenses on the grass and soil </li></ul></ul><...
Weather <ul><li>Condensation: </li></ul><ul><ul><li>Condensation Nuclei- tiny particles high in the atmosphere that water ...
Weather <ul><li>Clouds: </li></ul><ul><ul><li>Clouds form when air condenses onto particles </li></ul></ul><ul><ul><ul><li...
Weather <ul><li>Clouds: </li></ul><ul><ul><li>Cloud Prefixes and Suffixes: </li></ul></ul><ul><ul><ul><li>Prefixes </li></...
Weather <ul><li>Cloud </li></ul><ul><ul><li>Cumulus- heap clouds (look fluffy) </li></ul></ul><ul><ul><li>Cumulonimbus- th...
Weather <ul><li>Clouds: </li></ul><ul><ul><li>Stratocumulus- Dual natured clouds- low, heavy layers of puffy, gray clouds ...
Weather <ul><li>Fog: </li></ul><ul><ul><li>Water Vapor condenses in the layer near the ground </li></ul></ul><ul><ul><ul><...
Weather <ul><li>Smog: </li></ul><ul><ul><li>Smog: A combination of smoke and fog </li></ul></ul><ul><ul><li>Photochemical ...
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9th Grade Chapter 3 Lesson 1

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9th Grade Chapter 3 Lesson 1

  1. 1. 9 th Grade Chapter 3 Lesson 1 Pgs. 51-56 (Stop at Air Masses) For Student Use Only
  2. 2. Weather <ul><li>Understanding Weather </li></ul><ul><ul><li>Weather: state of the Earth’s atmosphere at a certain time and place </li></ul></ul><ul><ul><li>Climate: the year round weather typical of a certain place </li></ul></ul><ul><ul><ul><li>NOTE: </li></ul></ul></ul><ul><ul><ul><ul><li>Weather can change from day to day. </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Climate remains mostly the same. </li></ul></ul></ul></ul>
  3. 3. Weather <ul><li>Meteorology: </li></ul><ul><ul><li>Meteorology: the study of weather and the atmospheric conditions that product it </li></ul></ul><ul><ul><ul><li>Use observation and Physics to predict weather. </li></ul></ul></ul><ul><ul><li>Factor Causing Weather: </li></ul></ul><ul><ul><ul><li>Thermal Energy </li></ul></ul></ul><ul><ul><ul><li>Uneven Heat Distribution </li></ul></ul></ul><ul><ul><ul><li>Water Vapor </li></ul></ul></ul>
  4. 4. Weather <ul><li>Thermal Energy: </li></ul><ul><ul><li>Comes from the sun </li></ul></ul><ul><ul><ul><li>Absorbing heat from the Earth </li></ul></ul></ul><ul><ul><ul><li>Absorbing incoming Solar Radiation </li></ul></ul></ul>
  5. 5. Weather <ul><li>Uneven Distribution: </li></ul><ul><ul><li>23 ½ ° Tilt causes: Uneven Heating </li></ul></ul><ul><ul><ul><li>The hemisphere tilted towards the sun receives more energy. </li></ul></ul></ul><ul><ul><ul><li>The hemisphere tilted away from the sun receives less energy. </li></ul></ul></ul><ul><ul><ul><li>More inclined light at the poles </li></ul></ul></ul><ul><ul><ul><li>More direct light at the equator </li></ul></ul></ul><ul><ul><ul><li>Uneven Heating- the side away from the sun is cooler than the side facing the sun </li></ul></ul></ul>
  6. 6. Weather <ul><li>Water Vapor: </li></ul><ul><ul><li>Troposphere is consists of up to 4% water vapor </li></ul></ul><ul><ul><li>Water Vapor condenses to form: </li></ul></ul><ul><ul><ul><li>Clouds </li></ul></ul></ul><ul><ul><ul><li>Precipitation: water or ice falling to the earth </li></ul></ul></ul><ul><ul><ul><ul><li>Rain, Sleet, Hail, Snow, and Frost </li></ul></ul></ul></ul>
  7. 7. Weather <ul><li>Evaporation: </li></ul><ul><ul><li>The process by which a molecule of a liquid becomes a gas. </li></ul></ul><ul><ul><ul><li>The rate of evaporation is directly related to temperature. </li></ul></ul></ul><ul><ul><ul><li>Molecules in a gaseous state have more energy than a molecules in the liquid state. </li></ul></ul></ul>
  8. 8. Weather <ul><li>Evaporation: </li></ul><ul><ul><li>Heat of Vaporization- extra energy gained by evaporating molecules </li></ul></ul><ul><ul><ul><li>Defined as: the amount of heat required to one gram of a liquid into a gas without changing its temperature </li></ul></ul></ul><ul><ul><ul><li>Evaporation has a cooling effect because as one molecule gains energy the other molecules surrounding it lose energy. </li></ul></ul></ul>
  9. 9. Weather <ul><li>Condensation: </li></ul><ul><ul><li>When water vapor condenses it releases energy into its surroundings </li></ul></ul><ul><ul><ul><li>Heat of Condensation: The amount of heat released when a gas changes to a liquid. </li></ul></ul></ul><ul><ul><ul><li>Saturated Air: when the air can hold no more water vapor. </li></ul></ul></ul><ul><ul><ul><ul><li>As temperature of air decreases so does its moisture carrying capacity. </li></ul></ul></ul></ul>
  10. 10. Weather <ul><li>Condensation: </li></ul><ul><ul><li>Dew Point: The temperature at which water vapor in the air begins to condense </li></ul></ul><ul><ul><ul><li>Varies according: </li></ul></ul></ul><ul><ul><ul><ul><li>Pressure </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Humidity </li></ul></ul></ul></ul><ul><ul><ul><li>NOTE: WATER VAPOR WILL NOT CONDENSE UNLESS IT HAS SOMETHING TO CONDENSE UPON! </li></ul></ul></ul>
  11. 11. Weather <ul><li>Condensation: </li></ul><ul><ul><li>Dew- water vapor that condenses on the grass and soil </li></ul></ul><ul><ul><li>Frost- water vapor that is super cooled and goes right to freezing without going through the liquid phase </li></ul></ul><ul><ul><ul><li>This skipping of liquid step is called sublimation </li></ul></ul></ul><ul><ul><ul><li>Frost Point: temperature at which frost begins to form </li></ul></ul></ul>
  12. 12. Weather <ul><li>Condensation: </li></ul><ul><ul><li>Condensation Nuclei- tiny particles high in the atmosphere that water vapor can condense upon </li></ul></ul><ul><ul><li>Freezing Nuclei- tiny particles (same as condensation) high in the atmosphere that water vapor will freeze upon </li></ul></ul><ul><ul><ul><li>NUCLEI- dust, soot, smoke, sea salt, atoms </li></ul></ul></ul>
  13. 13. Weather <ul><li>Clouds: </li></ul><ul><ul><li>Clouds form when air condenses onto particles </li></ul></ul><ul><ul><ul><li>Most clouds result from adiabatic cooling of moist air </li></ul></ul></ul><ul><ul><li>Cloud Names: </li></ul></ul><ul><ul><ul><li>Based on height and shape </li></ul></ul></ul><ul><ul><ul><ul><li>Cumulus </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Stratus </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Cirrus </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Lenticular </li></ul></ul></ul></ul>
  14. 14. Weather <ul><li>Clouds: </li></ul><ul><ul><li>Cloud Prefixes and Suffixes: </li></ul></ul><ul><ul><ul><li>Prefixes </li></ul></ul></ul><ul><ul><ul><ul><li>Alto- high </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Nimbus- bring precipitation </li></ul></ul></ul></ul><ul><ul><ul><li>Suffixes: </li></ul></ul></ul><ul><ul><ul><ul><li>Nimbus- bring precipitation </li></ul></ul></ul></ul>
  15. 15. Weather <ul><li>Cloud </li></ul><ul><ul><li>Cumulus- heap clouds (look fluffy) </li></ul></ul><ul><ul><li>Cumulonimbus- thunderclouds </li></ul></ul><ul><ul><li>Stratus- layered clouds </li></ul></ul><ul><ul><li>Nimbostratus- layers rain clouds </li></ul></ul><ul><ul><li>Lenticular- lens shaped clouds (think contact lens) </li></ul></ul>
  16. 16. Weather <ul><li>Clouds: </li></ul><ul><ul><li>Stratocumulus- Dual natured clouds- low, heavy layers of puffy, gray clouds </li></ul></ul><ul><ul><li>Cirrostratus- thin, translucent clouds that spread like a sheet </li></ul></ul><ul><ul><li>Cirrocumulus- tiny puffs of cotton in the upper troposphere </li></ul></ul>
  17. 17. Weather <ul><li>Fog: </li></ul><ul><ul><li>Water Vapor condenses in the layer near the ground </li></ul></ul><ul><ul><ul><li>Radiation Fog- occurs on clear night when the greenhouse effect is reduced; when air is cooled below the dew point </li></ul></ul></ul><ul><ul><ul><li>Advection Fog- when warm air blows over a cold surface </li></ul></ul></ul><ul><ul><ul><li>Upslope Fog- moist winds blow up a slope and the air cools </li></ul></ul></ul><ul><ul><ul><li>Precipitation Fog- warm rain falling into cool air </li></ul></ul></ul>
  18. 18. Weather <ul><li>Smog: </li></ul><ul><ul><li>Smog: A combination of smoke and fog </li></ul></ul><ul><ul><li>Photochemical smog: thick brownish haze that results from complex molecules being released into the air </li></ul></ul>

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