Unit 8 - Meteorology

Greenhouse gases in the atmosphere trap heat near Earth’s surface. What are the greenhouse gases?

• CO₂, water vapor, methane, nitrous oxide
• CO₂, gas, carbon monoxide, CFCs
• Water vapor, fumes, carbon monoxide, methane
• nitrous oxide, ozone, UV radiation, gas

What statement best describes the ozone layer of Earth?

• Doesn't let storms into our atmosphere
• Protects us from aliens
• Keeps the fog away for airplanes
• Keeps the sun's radiation from frying us

Greenhouse gases in the atmosphere absorb infrared radiation from Earth’s surface and re-radiates some of it back to Earth. Which of the greenhouse gases have the most significant impact on the temperature of Earth’s atmosphere?

• CO₂
• Water Vapor
• Methane
• Nitrous Oxide

Why is the ozone content of the stratosphere important to living organisms?

• Ozone gives living organisms more water
• Ozone protects from the Sun's infrared radiation
• Ozone gives living organisms rain
• Ozone protects from the Sun's ultraviolet radiation

Auroras occur where Earth’s magnetosphere traps high-energy particles in which region of the atmosphere?

• Troposphere
• Stratosphere
• Thermosphere
• Mesosphere

Which gas accounts for the largest percentage of greenhouse gases in the atmosphere?

• Carbon Dioxide
• Nitrous Oxide
• Methane
• Water Vapor

Most ultraviolet (UV) rays are deflected or absorbed by the atmosphere, but some of these rays pass easily through the atmosphere and penetrate Earth’s surface.

Which substance in the atmosphere absorbs most of the ultraviolet rays   

• Nitrous Oxide
• Chlorofluorocarbons
• Ozone
• Greenhouse Gases

An air mass that moves from the equator over the Gulf of Mexico would be?   

• Continental Tropical
• Continental Polar
• Maritime Polar
• Maritime Tropical

Convection currents are formed in the atmosphere when cold air pushes warm air upward.

Which property of the air is most responsible for the formation of convection currents?   

• Chemical Composition
• Density Differences
• Temperature
• Pressure

What are the characteristics of maritime polar air masses?

• Cold and dry
• Cold and wet
• Hot and wet
• Hot and dry