Air Masses, Fronts and Pressure Notes

An air mass is a large body of air with

• uniform temperature and humidity characteristics.

• The same pressure but different temperature.

• that always forms clouds.

• winds coming from all different directions.

Tags

NGSS.MS-ESS2-5

Fill in the blank: Air masses are named for their source region, such as mP for maritime (water) polar, which is ______ and ______.

• moist, cold

• dry, cold

• moist, warm

• hot, dry

Tags

NGSS.MS-ESS2-5

Which of the following is a characteristic of a warm front?

• Temperature drops and pressure increases

• Winds from N/NW/W

• Temperature increases and pressure decreases

• Heavy precipitation for a short time

Tags

NGSS.MS-ESS2-5

Fill in the blank: At the front, the warmer air will rise above the cooler air causing clouds to form and storms to occur. This occurs because

• the warm air is more dense

• the warm air is less dense

• the temperature is getting further from the dew point

• water is evaporating

Tags

NGSS.MS-ESS2-5

Which of the following occurs when a cold front passes through?

• Air temperature decreases and pressure increases

• Air temperature increases and pressure decreases

• Air temperature decreases and pressure decreases

• Air temperature increases and pressure increases

Tags

NGSS.MS-ESS2-5

In a stationary front, both air masses stop against each other resulting in what phenomenon?

• One air mass overtakes the other

• Formation of clouds and precipitation

• Clear skies develop

• Both air masses dissipate

Tags

NGSS.MS-ESS2-5

In an occluded front, a fast-moving cold front overtakes a warm front and forces

• the warm air up

• the cold air up

• the warm air down

• The warm air mixes evenly with the cold air.

Tags

NGSS.MS-ESS2-5

What is the wind pattern in a high-pressure system?

• Diverging winds that circulate clockwise in the northern hemisphere

• Converging winds that circulate counterclockwise in the northern hemisphere

• Diverging winds that circulate counterclockwise in the northern hemisphere

• Converging winds that circulate clockwise in the northern hemisphere

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

What is the general movement of air masses in the USA?

• From west to east

• From east to west

• From south to north

• From north to south

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

As altitude, temperature, or moisture increase, what happens to pressure?

• It decreases

• It increases

• It remains constant

• It fluctuates

Tags

NGSS.MS-ESS2-5