Volcanoes

A volcano is a mountain that opens downward to a pool of molten rock below the surface of the Earth. When pressure builds up, eruptions occur. Gases and rock shoot up through the opening and spill over or fill the air with lava fragments.

Types of Volcanoes

There are different types of volcanoes including:

1. Shield Volcanoes: These have a broad, gently sloping cone created by the eruption of low-viscosity basaltic lava.
2. Stratovolcanoes (Composite Volcanoes): These are tall, steep volcanoes built by thick lava flows.
3. Cinder Cone Volcanoes: These are the smallest type of volcano and are formed from particles and blobs of congealed lava ejected from a single vent.

Volcanic Eruptions

Volcanic eruptions can be explosive, sending ash, gas, and magma high into the sky, or effusive, with lava flowing out of the volcano.

Study Guide

Here are some key points to remember about volcanoes:

• What is a volcano?
• Types of volcanoes
• Causes of volcanic eruptions
• Effects of volcanic eruptions
• Safety measures during volcanic eruptions

Be sure to study the different types of volcanoes and the characteristics of each. Also, understand the causes and effects of volcanic eruptions, as well as safety measures that should be taken during a volcanic event.

Now that you have a good understanding of volcanoes, you can explore more about the topic and even do some fun experiments related to volcanic eruptions!

[Volcanoes] Related Worksheets and Study Guides:

• Introduction to earth scienceScience • Sixth Grade
• VolcanoesScience • Eighth Grade
• VolcanoesScience • Seventh Grade