Create an account
Volcanic cones that are broad at the base and have gently sloping sides. This type of volcano covers a wide area and generally forms from quiet eruptions. Layers of hot, mafic lava flow out around the vent, harden, and slowly build up to form the cone.
Cinder cone volcano
A type of volcano that has very steep slopes. The slope angles can be close to 40°, and the slopes are rarely more than a few meters high. This type of volcano form from explosive eruptions and are made of pyroclastic material.
A large, circular depression that forms when the magma chamber below a volcano partially empties and causes the ground above to sink.
A volcanically active area of Earth's surface, commonly far from a tectonic plate boundary.
Ring of Fire
One of the Earth's major earthquake zones formed by the subduction of plates along the Pacific coasts of the Americas, Asia, and the islands of the western Pacific Ocean.
material from the crust or the mantle that has melted or liquid rock found inside Earth's surface.
Please allow access to your computer’s microphone to use Voice Recording.
Having trouble? Click here for help.
We can’t access your microphone!
Click the icon above to update your browser permissions and try again
Reload the page to try again!Reload
Press Cmd-0 to reset your zoom
Press Ctrl-0 to reset your zoom
It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.
Please upgrade Flash or install Chrome
to use Voice Recording.
For more help, see our troubleshooting page.
Your microphone is muted
For help fixing this issue, see this FAQ.
Star this term
You can study starred terms together