Weather Test Review

On weather maps, which symbol marks a high-pressure system?

• A red 'L'

• A blue 'H'

• A green triangle

• A yellow sun

Answer explanation

On weather maps, a blue 'H' indicates a high-pressure system, while a red 'L' marks a low-pressure system. The other options, a green triangle and a yellow sun, do not represent pressure systems.

Typical weather under a low-pressure system is most likely to be:

• Clear, sunny, and calm

• Clouds, rain, and stormy

• Dry and hot

• Cold and windless

Answer explanation

Low-pressure systems are associated with rising air, which cools and condenses to form clouds and precipitation. Therefore, typical weather under a low-pressure system is characterized by clouds, rain, and stormy conditions.

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

What is the general rule for wind described in the text?

• Wind is air flowing from low pressure to high pressure

• Wind is air flowing from high pressure to low pressure

• Wind only occurs over oceans

• Wind is caused by Earth's rotation alone

Answer explanation

The correct choice is that wind is air flowing from high pressure to low pressure. This is a fundamental principle of meteorology, as air moves to equalize pressure differences, creating wind.

Tags

NGSS.MS-ESS2-6

Why does warm air tend to rise, according to the passage?

• Warm air is denser because molecules pack closely

• Warm air expands and becomes less dense

• Warm air is pushed up by precipitation

• Warm air contains more moisture

Answer explanation

Warm air tends to rise because it expands and becomes less dense than cooler air. This lower density allows it to rise, while denser, cooler air sinks, creating convection currents.

At night near a coastline, which breeze occurs and in which direction does the air move?

• Sea breeze; from sea to land

• Land breeze; from sea to land

• Sea breeze; from land to sea

• Land breeze; from land to sea

Answer explanation

At night, the land cools faster than the sea, causing the air over the land to become denser and sink. This creates a land breeze, which moves air from land to sea.

Tags

NGSS.MS-ESS2-5

Which feature is typical of a high-pressure system?

• Moist air that condenses

• Air comes together and rises

• Clear, sunny skies and calm conditions

• Counter-clockwise motion

Answer explanation

A high-pressure system is characterized by descending air, leading to clear, sunny skies and calm conditions. This contrasts with low-pressure systems, which typically bring moist air that condenses and stormy weather.

Tags

NGSS.MS-ESS2-5

What do scientists who forecast weather by analyzing atmospheric components call themselves?

• Climatologists

• Geologists

• Meteorologists

• Oceanographers

Answer explanation

Scientists who forecast weather by analyzing atmospheric components are called meteorologists. They specialize in studying the atmosphere and its phenomena, unlike climatologists, geologists, or oceanographers who focus on different fields.

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

Which term describes a large area of air with similar temperature, air pressure, and humidity throughout?

• Weather front

• Air mass

• Jet stream

• Cyclone

Answer explanation

An air mass is a large body of air that has uniform temperature, pressure, and humidity. It contrasts with other terms like weather fronts and jet streams, which describe different atmospheric phenomena.

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

What is the boundary where different air masses meet and most dramatic weather changes occur?

• Isobar

• Weather front

• Trade wind

• Eye wall

Answer explanation

The boundary where different air masses meet is called a weather front. It is at these fronts that the most dramatic weather changes occur, making this the correct answer.

Tags

NGSS.MS-ESS2-5

Which front involves a fast-moving cold air mass moving under a warm air mass, pushing it up quickly?

• Warm front

• Stationary front

• Occluded front

• Cold front

Answer explanation

A cold front occurs when a fast-moving cold air mass pushes under a warm air mass, forcing it to rise rapidly. This leads to quick changes in weather, making 'cold front' the correct answer.

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6