Atmosphere Composition
What is atmosphere?
The mixture of gases surrounding Earth
True or false: air has mass
true
Which atmosphere layer do we live on?
Troposphere
What is an air mass?
A large body of air
What is weather?
The condition of Earth's atmosphere at a particular time and place
What is air pressure?
the result of the weight of a column of air pushing down on an area
Which atmosphere layer has shooting stars?
Mesosphere
What is a front?
The boundary between two air masses
What is the most abundant gas in the atmosphere?
Nitrogen
What happens to air pressure as altitude increases?
Air pressure decreases
Which atmosphere layer contains the ozone layer?
the Stratsohpere
What kind of air mass is associated with cool, dry air?
Continental Polar
Why is Earth's atmosphere important?
It makes conditions on Earth suitable for living things.
Ex: breathable air, regulates temperature, etc.
What tool measures air pressure?
A barometer
Which layer blends into space?
the Exosphere
What weather can be expected with a stationary front?
rain over many days
What are the four main gases in the atmosphere?
Nitrogen, Carbon Dioxide, Oxygen, and Water Vapor
What are the two types of barometers discussed in class?
Mercury barometer and aneroid barometers
List all four layers in order starting from Earth
Troposphere, Stratosphere, Mesosphere, and Exosphere
Describe how a cold front develops
Warm and cold air meet and the cold air forces the warm air up