Ch 3 Volcanoes

Tall, cone shaped mountains in which layers of lava alternate with ash are called

When ash, cinders, and bombs build up in a steep pile around a volcano's vent it forms a

A mass of rock formed when a large body of magma cools inside the crust is called

Which planet has shield volcanoes and lava flows similar to those on Earth

The smooth surfaces on Earth's moon that are visible from Earth are

Besides Earth, what are two other bodies in the solar system where volcanic eruptions were seen

When groundwater heated by magma rises and collects in a natural pool it is called a

____ eruptions produce ___ lava, which is slow moving and cool

Batholiths are

The huge hole left by the collapse of a volcanic mountain is called a

The eruptions on Neptune's moon Triton involve

If a volcano's magma is high in silica, the volcano will probably

Which factor does not affect how thick or thin magma is

What provides the force that causes magma to erupt to the surface

Liquid magma flows upward through cracks in rock because it is

Volcanic soils are fertile because they contain

In volcanic areas, groundwater heated by magma is a source of

Before lava reaches the surface it is called

When magma squeezes between layers of rock it forms a

What is the belt of volcanoes around the rim of the Pacific Ocean called

Pahoehoe is

Volcanic activity on Neptune's moon Triton involves eruptions not of magma, but of

An area where magma melts through the crust in the middle of a plate is called a(n)

Layers of thin, runny lava that flow over wide areas before they cool and harden can build up a

The energy source provided by magma heating water is called

The long tube in the ground that connects the magma chamber to the surface is called the

Inside a volcano magma collects in a pocket called a

A volcano that is erupting or has shown signs that it may erupt in the future is called

What forms when rising magma, blocked by layers of rock, forces the layers to bend upward

Which of the following helps to determine how easily magma flows