Weather
What is Weather?
Refers to the conditions of the atmosphere at a given time or place
Define what the word atmosphere means
The thin layer of air, mostly nitrogen and oxygen, that surrounds the Earth.
What is air pressure
The pressure exerted by gases in our
atmosphere
List three weather variable that you can find on a station model
-Wind direction, wind speed, pressure, humidity, cloud cover, barometric trend, temperature, dew point, present weather, visibility, amount of precipitation
What is climate?
Climate is the long-term pattern of weather in an area, typically averaged over a period of 30 years.
What Causes Weather?
-The source of energy and heat is the Sun
-Unequal heating of Earth’s atmosphere
Why is there no real upper limit to the
Exosphere?
Earth’s gravity is weak in this layer of the atmosphere, so gas molecules will often float off into space
What causes wind to be strong or
weak?
The difference between high pressure and low pressure
What is the temperature of the following station model
74
What kind of weather comes with high pressure?
Good Weather - Nice
A location's Weather Depends on……..
Air Temperature
Air Pressure
Fog
Humidity
Cloud Cover
Precipitation
Wind Speed and Direction
As altitude increases in the Mesosphere
what happens to Temperature?
Temperature decreases with altitude
The type of surface that absorbs the most solar radiation is…..
Dark, rough surfaces (land) absorb faster = warmer
What is the wind speed, cloud cover and wind direction of the following station model
50%, 15 knots and from the southeast
What is the difference between frost and dew point?
Frost- Frozen Dew, temps. Below freezing point
What are greenhouse gases and how do they help or hurt the atmosphere?
A greenhouse gas is a gas that absorbs and emits radiant energy within the thermal infrared range, causing the greenhouse effect.
What are the Northern Lights
Lights of the aurora are actually collisions between electrically charged particles from the sun that enter the earth's atmosphere. The lights are seen above the magnetic poles of the northern and southern hemispheres. They are known as 'Aurora borealis' in the north and 'Aurora australis' in the south..
The angle at which solar radiation strikes the Earth causes…...
-Unequal heating of Earth's Atmosphere
-Weather
What is the pressure from the following station model? Decode the pressure to be a real life pressure
1000.2
What are CFC's? What do they do?
CFC's - Chlorofluorocarbons- breaks up the atmosphere's Ozone Laye
Where does our weather take place?
Weather takes place in the atmosphere: Mostly in the Lower atmosphere - Troposphere
Why is there no real upper limit to the
Exosphere?
Earth’s gravity is weak in this layer of the atmosphere, so gas molecules will often float off into space
What causes seasonal temperature change
Unequal heating of Earth's Atmosphere
What is the barometric trend in words
-31\ : over the last 6 hours the pressure dropped 3.1 mb and is still dropping
How do Rainbows form?
The refraction of light in water droplets in the sky