Presentation on theme: "Volcanic Landforms. Landforms From Lava and Ash Rock and other materials formed from lava create a variety of landforms including __________________,"— Presentation transcript:
Landforms From Lava and Ash Rock and other materials formed from lava create a variety of landforms including __________________, __________________, _________________, and ___________________.
Shield Volcanoes A wide gently sloping _____________ made of layers of lava and formed by ______________. Shield volcanoes rising from a hot spot on the ocean floor created the __________ ___________.
Cinder Cone Volcanoes A steep _________ ____________ hill or mountain. Cinder cone volcanoes occur from pile up of _____________, ____________, and _____________ from an explosive volcano.
Composite Volcano Tall, cone shaped mountains in which layers of ______________ alternate with layers of ______________. Examples: Mt. Saint Helens, Mt. Fuji
Lava Plateau High level areas formed from lava Example: Columbia Plateau Caldera: A huge hole left by the _____________ of a _______________ mountain. The hole is filled with the __________ of the ____________ that have fallen inward as well as some __________ and ___________.
Soils from lava and ash Soils made from volcanic ash is some of the richest soil in the world. Volcanic ash breaks down and releases _______________, ______________, and other materials that plants need. People settle near volcanoes to take advantage of the ___________ ___________.
Landforms from Magma Features formed from magma include: volcanic necks, dikes, and sills, as well as batholiths and dome mountains. Volcanic necks, dikes, and sills: A neck forms when magma hardens in a ____________ __________. Magma that forces itself across ____________ ___________ hardens into a dike.
When magma squeezes between __________ of ___________ it is called a sill. Batholiths: A mass of rock formed when a large body of magma ___________ inside the ___________. Dome Mountains: Forms when rising magma is ____________ by horizontal layers of ____________. The magma forces the layers of rock to ___________ upward into a dome shape