Show:
atmosphere
atmosphere
atmosphere
atmosphere
atmosphere
100
The two most abundant gases in the atmosphere are....
nitrogen and oxygen
100
Photochemical smog results from the interaction of pollutants in the presence of...
sunlight
100
Air in the atmosphere has pressure because
air has mass
100
The National Weather Service measures air pressure in units called...
millibars
100
Instruments used to measure air pressure are called......
barometers
200
Most pollution in the atmosphere comes from
burning of fossil fuels
200
As you rise farther in the atmosphere, air pressure....
decreases
200
When climbing a high mountain, you get out of breath easily because.....
the air is less dense (same percentages, though)
200
Water vapor is water in the form of a .....
gas
200
Pollen in the air is mainly produced by.....
plants
300
The less mass in a given volume of air, the .....
less dense the air is
300
The layer in our atmosphere in which weather occurs is the .....
troposphere
300
The ozone layer absorbs.....
ultraviolet radiation
300
What is the first layer of atmosphere an astronaut passes through during REENTRY from space.....
exosphere
300
Radio waves are reflected back to Earth in the ......
ionosphere
400
From Earth to space, the main layers of the atmosphere are.....
troposphere, stratosphere, mesosphere, thermosphere
400
Density equals.......
Density= Mass/Volume
400
What is the average percentage of oxygen in our atmosphere at Earth's surface?
21%
400
As you increase altitude in the troposphere, temperature......
decreases
400
On average, nitrogen composes what percent of our atmospheric gases in the troposphere?
78%
500
Earth's atmosphere contains about four times as much nitrogen as......
OXYGEN
500
The term for lines of equal air pressure on a weather map.....
isobars
500
The ozone layer is located in the ........
stratosphere
500
The layers of the atmosphere are classified according to changes in .............
temperature
500
Ozone is a form of oxygen with.........
3 oxygen atoms in each molecule