Atmosphere Quiz
Questions: 16 · 10 minutes
1. Auroras are most closely associated with charged particles interacting with gases in which atmospheric layer?
Thermosphere
Stratosphere
Mesosphere
Troposphere
2. Which layer is the outermost atmospheric region, where extremely thin gas gradually transitions into space?
Stratosphere
Exosphere
Thermosphere
Mesosphere
3. Which gas makes up the largest share of Earth’s dry atmosphere?
Nitrogen
Oxygen
Argon
Carbon dioxide
4. An unsaturated parcel of air rises up a mountain slope without receiving heat from its surroundings. Why does it generally cool?
It expands as surrounding pressure falls, using internal energy
It loses all its water vapor as soon as it rises
It moves farther from Earth’s warm core
It enters the ozone layer near the summit
5. A weather balloon rises while remaining flexible and sealed. What change is most likely as it climbs through the lower atmosphere?
Its volume decreases because gravity rapidly strengthens
Its volume increases as surrounding pressure decreases
Its gas turns into liquid because altitude always raises pressure
Its volume stays constant because atmospheric pressure does not vary
6. If stratospheric ozone decreases substantially, which surface-level change is the most direct expectation?
A large increase in atmospheric nitrogen
More ultraviolet radiation reaching the surface
A complete halt to the greenhouse effect
The immediate disappearance of cloud formation
7. In which atmospheric layer do most incoming meteors become visible as they heat up and burn or fragment?
Troposphere
Stratosphere
Exosphere
Mesosphere
8. A hiker carries a sealed, flexible bag of air from sea level to a high mountain. Why does the bag tend to expand?
Atmospheric oxygen changes into nitrogen
Outside air pressure decreases with altitude
Gravity becomes nearly absent on the mountain
The surrounding air gains much more water vapor
9. Why can greenhouse gases warm Earth’s lower atmosphere and surface?
They reflect nearly all incoming sunlight back to the ground
They create heat by reacting continuously with atmospheric nitrogen
They prevent convection from occurring anywhere in the atmosphere
They absorb and re-emit some outgoing infrared radiation
10. Which atmospheric layer contains the ozone-rich region that absorbs much of the Sun’s harmful ultraviolet radiation?
Troposphere
Mesosphere
Exosphere
Stratosphere
11. During a temperature inversion over a city, why can pollution accumulate near the ground?
Surface winds always accelerate during an inversion
Stratospheric ozone descends and pushes pollutants downward
Warmer air above limits the upward mixing of cooler surface air
Air pressure at ground level falls to nearly zero
12. A broad air mass begins moving northward in the Northern Hemisphere. Relative to Earth’s surface, how does the Coriolis effect tend to deflect it?
Straight upward
To its left
To its right
Directly toward the equator
13. Sunlight warms one patch of ground more strongly than nearby land. What is most likely to happen to the air directly above the warmer patch?
It becomes denser and sinks because it gains energy
It moves immediately into the stratosphere without mixing
It becomes less dense and tends to rise
It loses pressure while remaining fixed at ground level
14. At the same temperature and pressure, humid air is slightly less dense than dry air. What best explains this?
Water molecules have a lower molecular mass than the main molecules they displace
Water vapor removes all oxygen from humid air
Humidity prevents gas molecules from moving
Water vapor has a greater molecular mass than nitrogen and oxygen
15. In which atmospheric layer does nearly all ordinary weather occur?
Stratosphere
Mesosphere
Troposphere
Thermosphere
16. All else being equal, what is the most direct radiative effect of adding more carbon dioxide to the atmosphere?
More visible sunlight is produced within the troposphere
All outgoing infrared radiation is permanently trapped
The atmosphere stops exchanging energy with space
More outgoing infrared radiation is absorbed and re-emitted within the atmosphere