Atmospheric Stability and Fire Behavior Quiz

What is the primary effect of atmospheric stability on wildfires?

• It decreases the humidity around the fire.

• It affects the vertical motion of air, influencing fire behavior.

• It changes the color of the smoke produced by the fire.

• It increases the temperature of the fire.

What happens to air as it is adiabatically lifted?

• It contracts and heats up.

• It expands and cools.

• It becomes denser and warmer.

• It remains at the same temperature.

Which lapse rate indicates a stable atmospheric condition for unsaturated air?

• A lapse rate greater than the dry-adiabatic rate.

• A lapse rate equal to the dry-adiabatic rate.

• A lapse rate less than the dry-adiabatic rate.

• A lapse rate equal to the moist-adiabatic rate.

What is the typical dry-adiabatic lapse rate?

• 3°F per 1,000 feet

• 2°F per 1,000 feet

• 5.5°F per 1,000 feet

• 7°F per 1,000 feet

What is the effect of subsidence on air reaching the surface?

• It becomes cooler and more humid.

• It becomes warmer and drier.

• It becomes cooler and drier.

• It remains unchanged.

What is the role of an adiabatic chart in meteorology?

• To measure wind speed.

• To track cloud movements.

• To predict rainfall.

• To plot temperature and moisture soundings for stability analysis.

What is a characteristic of a conditionally unstable atmosphere?

• It is stable when saturated and unstable when unsaturated.

• It is unstable when saturated and stable when unsaturated.

• It is always unstable.

• It is always stable.

What is the effect of surface heating on atmospheric stability during the day?

• It increases stability.

• It decreases stability.

• It has no effect on stability.

• It causes the atmosphere to become more humid.

What is the primary cause of subsidence in high-pressure systems?

• Rising air from low-pressure areas.

• Cooling of the surface.

• Increased humidity.

• Horizontal divergence of air.

What is indicated by the presence of cumulus clouds?

• Unstable atmospheric conditions.

• No vertical air movement.

• High humidity at the surface.

• Stable atmospheric conditions.