Weather: Air Masses, Air Fronts, and Weather Symbols PreTest

Which of the following describes an air mass with the symbol cT?

• wet and cold
• dry and cold
• wet and warm
• dry and warm

A continental Polar air mass forms over

• the Pacific Ocean
• northern Canada
• the Gulf of Mexico
• a southwest desert

How does a warm front form?

• Warm air becomes caught between cold air masses.
• Two air masses meet and stay separated.
• Warm air moves over cold air and replaces it.
• Cold air moves under warm air and pushes it up.

A prediction of the weather conditions in Earth’s atmosphere for a given location and time is a

• climate.
• forecast.
• space.
• STEM.

This front forms when a warm air mass and a cold air mass meet and neither air mass has enough energy to move the other air mass.

• occluded front
• cold front
• warm front
• stationary front

What kind of front forms when a cold air mass pushes out and replaces a warm air mass?

• occluded front
• cold front
• warm front
• stationary front

A huge body of air that has similar temperature and moisture content throughout is a(n)

• cold front.
• stationary front.
• air mass.
• global wind.

A front that forms when a warm air mass is trapped between two cold air masses and the warm air mass is forced to rise up above the cold air masses is a(n)

• stationary front.
• warm front.
• occluded front.
• cold front.

Warm air rises and cold air sinks because

• warm air is less dense than cold air.
• warm air is denser than cold air.
• cold air is less dense than warm air.
• warm air has higher air pressure than cold air.

Warm air masses that form in the tropics and have low air pressure are __ air masses.

• polar
• continental
• maritime/marine
• tropical