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What percent of our atmosphere is made up of gases other than oxygen and nitrogen?
1%
Instruments used to measure air pressure are called...
barometers
As you rise upwards in the atmosphere, air pressure
decreases
The layers of the atmosphere are classified according to changes in
temperature
From earth to space, the main layers in our atmosphere are:
troposphere, stratosphere, mesosphere, thermosphere
The layer of our atmosphere in which weather occurs is the
troposphere
Ozone is
a form of oxygen with three oxygen atoms in each molecule
The lowest and shallowest layer of the atmosphere is the
troposphere
The ozone layer protects living things on Earth from
ultraviolet radiation
The layer of the atmosphere between the stratosphere and the thermosphere is called the
mesosphere
Which layer of the atmosphere protects the Earth's surface from being hit by most meteoroids?
mesosphere
How does the temperature of the air change as you go higher in the troposphere?
It decreses
Which layer of the atmosphere's four main layers contains both the ionosphere and exosphere?
The thermosphere
The ___________ is the envelope of ___________ that surrounds Earth.
atmosphere; gases
What are the four most common gases in air?
Nitrogen, Oxygen, carbon dioxide, and argon
What is altitude?
The distance above sea level
