Students learn about air masses and the role they play in weather and climate.

The purpose of this online tutorial activity is to introduce air masses that commonly influence the weather in the United States, characteristics of these air masses, and how to identify air masses on weather maps. Key words throughout this activity link directly to helper resources that provide useful information for answering the questions.

Air MovementGiving us credit when you use our content and technology is not just important for legal reasons. When you provide attribution to CK-12 Foundation, you support the ability of our non-profit organization to make great educational experiences available to students around the world.Our Creative Commons License welcomes you to use our content and technology when you give us attribution. If you have any questions about our policies, contact us at support@ck12.org

This interactive resource uses a series of animated slides to guide students through the development of a hurricane.

Changing WeatherGiving us credit when you use our content and technology is not just important for legal reasons. When you provide attribution to CK-12 Foundation, you support the ability of our non-profit organization to make great educational experiences available to students around the world.Our Creative Commons License welcomes you to use our content and technology when you give us attribution. If you have any questions about our policies, contact us at support@ck12.org

Students study the storms that ravaged the southeastern region of the U.S. and the Caribbean and investigate connections between climate change and extreme weather events.

In this activity series students will learn more about global, regional, and local weather (and climate) drivers. This particular activity focuses on clouds, ways that the ocean and atmosphere combine to move moisture and heat energy around the globe, and wind and pressure.

In this activity students will learn about air masses, fronts, pressure systems, and wind patterns in relation to regional weather.

In this tutorial students will learn about the four major types of air masses and how they create fronts that affect weather patterns.

Students manipulate virtual variables such as wind strength and direction, latitudinal location, atmospheric moisture, and sea temperature to create ideal conditions for hurricane formation in this interactive activity.

In this unit students will learn about specific dangers of storms and hurricane hazards. Students will also look at safety precautions.

In this unit students will learn about specific dangers of storms and hurricane hazards. Students will also look at safety precautions.

In this unit students will learn about specific dangers of storms and hurricane hazards. Students will also look at safety precautions.

In this activity students will watch a video and learn where hurricanes form. Students will also learn how hurricanes form.

Hurricanes move in generally predictable patterns. This part of the investigation focuses on these patterns for hurricanes in the Atlantic Ocean. First you'll examine the movie again to see if you can identify the patterns empirically. Then you will try to tie your observations together with information about global wind patterns.

This tutorial provides information about El Nino - its early warning signs, its ancient past, its global connections, and its impacts on the globe.

In this lesson, students examine global climate model output available online and consider the potential impact of global warming on tropical cyclone initiation and evolution. As a follow-up, students read two short articles on the connection between hurricanes and global warming and discuss these articles in context of what they have learned from model output.

This brief video lesson discusses the weather conditions that foster tornado formation. Discussion/assessment questions and suggested supplemental resources are also included.