About This Chapter
Understanding Volcanoes - Chapter Summary
The lessons in this chapter on understanding volcanoes cover information about volcanoes taught in middle school Earth science classes. Lesson topics include types of volcanoes and lava flows, volcanic eruptions and volcanic hazards. Use the tags in the video timeline to quickly jump to the topics your child needs to review, and test what they have learned with our interactive quizzes.
Chapter Lessons and Objectives
|What is a Volcano? - Definition & Eruptions||Students learn about the formation of volcanoes and what happens when they erupt.|
|Types of Volcanoes: Shield, Cinder Cones & Composite Cones||Instructors discuss the main characteristics of different types of volcanoes.|
|Volcanic Eruption: Gases Released & Their Effects||Your students can use this lesson to look at the gases that escape into the atmosphere when a volcano erupts.|
|The Flow of Pyroclastic Materials||This lesson explores the different materials that emerge from volcanic eruptions.|
|Volcanic Landforms: Types & Formation||Instructors examine how volcanoes shape the surface of the earth.|
|Lava Flow, Pyroclastic Flow, Pyroclastic Surge & Tephra: Preventing Volcanic Hazards||Here, students can discover how volcanic hazards can be prevented.|
|Volcanic Hazards & Prevention: Landslides, Lahars & Tsunamis||This lesson explains volcanic hazards and their prevention.|
1. What is a Volcano? - Definition & Eruptions
Volcanoes are vents that allow lava, rock fragments and gases to escape from layers beneath the earth's surface. Learn how volcanoes form both on land and underwater and why they erupt.
2. Types of Volcanoes: Shield, Cinder Cones & Composite Cones
The earth ejects lava, rock fragments, hot vapor and gases during volcanic eruptions. Volcanoes vary based on size, shape, composition and eruptive style. Learn about the different types of volcanoes, such as shield, cinder cone and composite cone.
3. Volcanic Eruption: Gases Released & Their Effects
Volcanic eruptions emit water vapor and toxic gases into the atmosphere. Learn about the gases emitted from an erupting volcano, such as carbon dioxide, sulfur dioxide, hydrogen sulfide, hydrochloric acid and carbon monoxide and their effects in this video lesson.
4. The Flow of Pyroclastic Materials
A pyroclastic flow is the flow of volcanic ash, gases and fragments following a volcanic eruption. Learn about the types of pyroclastic flows and the materials that make them up and contribute to their fluid nature.
5. Volcanic Landforms: Types & Formation
Volcanic eruptions pull materials up from deep within the earth to form various volcanic landforms, such as lava domes, lava plateaus, fissure eruptions, craters and calderas. Learn about these volcanic landforms and how they are created.
6. Lava Flow, Pyroclastic Flow, Pyroclastic Surge & Tephra: Preventing Volcanic Hazards
Volcanic hazards are any type of volcanic process that leads to destruction or threatens life. Learn about specific volcanic hazards including lava flows, pyroclastic flows, pyroclastic surges and tephra and measures used to prevent or reduce damage
7. Volcanic Hazards & Prevention: Landslides, Lahars & Tsunamis
Volcanic hazards are any volcanic process that can damage property or threaten life. Learn about volcanic hazards, such as landslides that can trigger lahars and tsunamis, and ways to prevent these hazards from threatening people's lives.
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Other chapters within the Earth Science: Middle School course
- Earth's Spheres & Structure
- Understanding Plate Tectonics
- Understanding Earthquakes
- Rock Deformation & Mountain Building
- Shaping the Earth's Surface
- Thermal Energy
- Energy in the Earth System
- Ecology & Ecosystems
- Earth's Energy Resources
- Earth's Material Resources
- Earth Science Investigation & Experimentation