Pressure Systems & Fronts

Air is more and more thin as you go higher in altitude because there is ___________ at a high altitude.

• less gravity and less air pressure
• more gravity and more air pressure
• more snow and more gravity
• more water vapor and more air pressure

78% of earth's atmosphere is composed of ____? 

• methane
• oxygen
• argon
• nitrogen

How do we name air masses?

• Water and temperature
• Air pressure
• Humidity and temperature
• Cold and warm

How do we characterize an air mass that forms over the ocean?

• Dry
• Wet
• Cold
• Warm

How do we characterize an air mass that forms over land?

• Dry
• Wet
• Cold
• Warm

How do we characterize an air mass that forms over near the equator?

• Dry
• Wet
• Cold
• Warm

How do we characterize an air mass that forms near the poles?

• Dry
• Wet
• Warm
• Cold

What types of air masses form over oceans?

• Maritime
• Continental
• Polar
• Tropical

What's the humidity and temperature of a continental tropical air mass?

• Wet and cold
• Dry and warm
• Wet and warm
• Dry and cold

What's the humidity and temperature of a maritime tropical air mass?

• Wet and cold
• Dry and warm
• Wet and warm
• Dry and cold