Weather and Climate: Ch. 1 Flashcards
___ likely has the greatest variety of weather in the world
U.S.
Study of the atmosphere and its phenomena
Meteorology
State of atmosphere at a given time and place
Weather
Weather is always _______
changing
Average of all weather data
Climate
Climate helps describe environment of a ________ or _______
place or region
Climate includes _________
extremas
What are the 6 Elements of Weather and Climate
- Air temperature
- Humidity
- Type and amount of cloudiness
- Type and amount of precipitation
- Pressure
- Speed and direction of wind
Annual average of about __ lives lost in U.S. due to weather events
500
1 killer world wide
Excessive heat
Almost half the lives taken due to weather events in the US are due to _________ ____
excessive heat
NOAA
National Oceanic and Atmospheric Administration (Weather Radio)
What is the NOAA’s maximum range?
40 miles
Issued by Storm Prediction Center when hazardous weather is considered possible (counties)
Weather Watch
Issued by National Weather Service when hazardous weather is imminent or taking place
Weather Warning
Who issues Weather Warnings?
- local stations
- Springfield’s comes from Lincoln, IL)
What are Earth’s 4 spheres?
- Atmosphere
- Hydrosphere
- Lithosphere
- Biosphere
Life-giving gases that surrounds Earth
Atmosphere
Earth and atmosphere waters
Hydrosphere
Soils and rocks that make up Earth’s crust
Lithosphere
All living things
Biosphere
Collection of numerous interacting parts, or subsystems, that form a complex whole
System
What 2 sources power the Earth System?
- Sun drives external processes
- Earth’s interior drives internal processes
Mixture of many gases
Air
What happens to air in the atmosphere?
Tiny solid and liquid particles are suspended
Earth’s atmosphere is a _____, gaseous envelope
thin
What are the Earth’s nonvariable elements in the atmosphere?
- 78% Nitrogen (N2)
- 21% Oxygen (O2)
What are the Earth’s variable elements in the atmosphere?
- Carbon dioxide (CO2)
- Water Vapor (H2O)
- Ozone
- Aresols
Characteristics of carbon dioxide in the atmosphere
- important greenhouse gas
- traps a portion of Earth’s outgoing energy
- keeps us warm
Characteristics of water vapor in the atmosphere
- invisible gas that varies
- provides clouds and precipitation
- important greenhouse gas
- absorbs heat
- releases large amounts of latent heat
Characteristics of Ozone in the atmosphere
- stratosphere
- protects life from harmful ultraviolet (UV) radiation
Characteristics of aerosols in the atmosphere
- Tiny solid or liquid suspended particles
- surface for water vapor to condense (clouds)
- absorb and reflect incoming solar radiation
- contribute to atmosphere optics (sunset)
Characteristics of Pressure
- Weight of air molecules on Earth
- Decreases with increasing height
What is Standard Value (at sea level)?
1013.25 mb used on surface weather maps
What is Earth’s average surface temperature?
59℉ (15℃)
Where does almost all weather occur?
troposphere
What is the troposphere’s average altitude?
7.5 miles
What is the lowest layer of the atmosphere?
Troposphere