EO M336.02 Confirmation

Cumulus clouds are formed by:

• Stable Air

• Unstable Air

Which of the following best describes a Stratus cloud?

• Formed in stable air, puffy and cotton like, seen in Summer

• Formed in unstable air, puffy and cotton like, seen in Summer

• Formed in stable air, flat, can be seen year round

• Formed in unstable air, flat, can be seen year round

Low Clouds are:

• found between 16 500 and 45 000 feet AGL with an average of 25 000 feet. Composed of ice crystals. Use prefix cirrus or cirro.

• found between 0 and 6500 feet above AGL. They are composed of water droplets and sometimes ice crystals. They often use the term stratus as a prefix or suffix.

• found between 6500 and 23 000 feet AGL. They are composed of water droplets or ice crystals at temperatures above 0 degrees Celsius. Use prefix alto.

• found as low as 1500 feet and rise to the lower levels of the stratosphere.

What is the prefix of a Middle Cloud?

• alto

• strato

• stratus

• cirrus

The cloud that ranges from 1500 feet to the atmosphere is the:

• Low Cloud

• Middle Cloud

• High Cloud

• Clouds of Vertical Development

What often causes vertical currents?

• Temperature

• Terrain

• Aircraft

• Precipitation (rain)

Air that does not resist a change in temperature and rises is called:

• Stable Air

• Unstable Air

What happens to air when it rises?

• It heats up and compresses

• It heats up and expands

• It cools and compresses

• It cools and expands

The lifting agent that lifts air through contact with the Earth's surface is called:

• Sun Heat

• Mechanical Turbulence

• Convection

• Orographic Lift

The lifting agent that causes air to lift due to large sloped terrain is called:

• Sun Heat

• Mechanical Turbulence

• Convection

• Orographic Lift