Weather and Climate

Which TWO describe an air mass?

• A fast moving cloud

• Similar temperature and humidity throughout

• A low pressure zone

• Can be 100s of miles across

Answer explanation

An air mass is characterized by having similar temperature and humidity throughout, and it can extend over hundreds of miles. This distinguishes it from fast-moving clouds or low pressure zones.

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

Where do storms and precipitation BEGIN to DEVELOP?

• In the middle of an air mass

• Where two air masses with different characteristics meet

• Only over the ocean

• Only at high elevations

Answer explanation

Storms and precipitation develop where two air masses with different characteristics meet, as this creates instability and allows for the rising of warm, moist air, leading to cloud formation and precipitation.

Tags

NGSS.MS-ESS2-5

What happens when air is forced upward?

• It gets warmer as it get closer to the Sun and holds more moisture

• It cools and loses water vapor through condensation and precipitation

• The Sun speeds up molecular motion as it rises and turns this fast motion into wind

• It continues up till it travels into space

Answer explanation

When air is forced upward, it cools due to lower pressure at higher altitudes. This cooling causes water vapor to condense, leading to precipitation. Thus, the correct answer is that it cools and loses water vapor through condensation and precipitation.

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

What influences prevailing wind patterns?

• Earth's tilt

• Ocean currents and topography (land features)

• Earth's rotation

• All of the above

• uneven heating of earth's surface

Answer explanation

Prevailing wind patterns are influenced by various factors including Earth's tilt, rotation, uneven heating of the surface, and ocean currents and topography. Therefore, the correct answer is 'All of the above'.

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

What happens when a warm air mass meets a cold air mass?

• The warm air sinks below the cold air

• The warm air rises above the cold air

• The two air masses mix evenly

• The air masses stop moving

Answer explanation

When a warm air mass meets a cold air mass, the warm air, being less dense, rises above the cold air. This process can lead to cloud formation and precipitation as the warm air cools and condenses.

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

When air is at the MAXIMUM amount of water vapor that it can hold, it is called _____.

• Absolute humidity

• Related humidity

• 100% relative humidity

• Dew point

• Maximum potential

Answer explanation

When air reaches its maximum capacity for water vapor, it is said to have 100% relative humidity. This means the air is fully saturated with moisture, making it the correct answer.

Tags

NGSS.MS-ESS2-5

What is one major factor in predicting storm movement?

• The movement of low-pressure systems

• The number of raindrops in a storm

• The height of trees in an area

• The shape of the clouds

Answer explanation

The movement of low-pressure systems is crucial in predicting storm movement, as these systems drive weather patterns and influence the direction and speed of storms. Other factors like raindrops, tree height, and cloud shape are less significant.

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

What is the typical movement direction of air masses in the U.S.?

• North to south

• West to east

• East to west

• South to north

Answer explanation

In the U.S., air masses typically move from west to east due to the prevailing westerly winds. This movement influences weather patterns across the country.

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

What causes prevailing winds?

• The daily movement of the sun

• The interaction of air masses

• The rotation of the Earth

• The number of clouds in the sky

Answer explanation

Prevailing winds are primarily caused by the rotation of the Earth, which creates the Coriolis effect, influencing wind patterns. While the sun and air masses play roles, the Earth's rotation is the key factor.

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

What helps predict where air and precipitation come from?

• The shape of the land

• Patterns in wind movement

• The brightness of the sun

• The number of clouds in the sky

Answer explanation

Patterns in wind movement are crucial for predicting the origins of air and precipitation, as they determine how moisture is transported and where weather systems develop.

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6