Weather
A body of air extending over a large area (1,000 miles or more)
Air Mass
Features on the surface of Earth
Landforms
how many cars in the world
1.4 Billion
how many sailboats in the world
30 million
how many McDonalds in the world
38k
The layer of gas surrounding a planet heald by gravity
Atmosphere
Directional movements of ocean water
Ocean Currents
How many boats in the world
30 million
how many billionaires in the world
2,668
how many Taco Bells in the world
7.8k
The border between cold air mass and warm air mass
Cold Front
Based on probability
Probabilistically
how many trains in the world
350k
how many millionaires in the world
56.1 million
how many continents in the world
7
Forecast
The boundary between warm air and cold air
Warm Front
how many weels in the world
37 billion
How many languages in the world
7,100
how many polar bears are in the world
26,000
Winds that heat unequal amounts of earths surface
Global Winds
The day-to-day state of atmosphere
Weather
how many people in the world
7.4 billion
how many blimps are in the world
25
how many grains of sand are in the world
five hundred quadrillion grains