Pop Quiz
A thin layer of gases that surround the Earth is
What is the Atmosphere?
Troposphere layer contains
It contains 75% of the atmosphere's mass and 99% of the total mass of water vapour and aerosols.
Air is made up of
Atoms and Molecules.
The most abundant gas in the Atmosphere is
Nitrogen
The weight of the air in the atmosphere causes ______
Air Pressure
The four most common gases in dry air are
Nitrogen,Oxygen,Carbon Dioxide, and Argon
The middle section of this layer is the ozone layer
What is Stratosphere?
The greater the altitude, _____________.
The lower the gravity
Plants must have this to survive and to produce food.
What is Carbon Dioxide?
This is the most common form used in everyday weather forecasts
Inches of Mercury
It is located 80+km above earth's surface.
What is the Thermosphere?
Mesosphere does what for the Atmosphere
The Mesosphere burns up most meteors and asteroids before they are able to hit the planet.
The more molecules in a volume, ________________.
the greater the density.
It makes up less than 1/4 of the atmosphere, however it is the most essential for animal and human life.
What is Oxygen?
When air pressure ___, altitude ____.
decreases,increases
This is the lowest layer of the Atmosphere.
What is the Troposphere?
It is very hot due to the sunlight hitting it first.
What is the Thermosphere?
Air has mass, therefore, it also has other properties such as
Density and Pressure
Water Vapor is
A gas form of water that is invisible and cannot be felt.
These are the two main types of barometers used to measure air pressure
Mercury and Aneroid
Three ways in which the Atmosphere is important to life on Earth
1) It contains oxygen need by many organisms.
2) It provides warmth by trapping energy from the sun.
3) It protects us from dangerous radiation and objects from outer space.
The layer of the Atmosphere that begins at about 400km and extends out into space
What is Exosphere?
Density equals
Mass/Volume
Precipitation cannot form without
What is Particles?
The National Weather Service uses maps and _____ to measure air pressure.
Millibars