In your textbook, read about the types of magma.
Use each of the terms below just once to complete the passage.
andesitic
sediments
silica
Magmas are named after (9)
rocks in the (10)
silica and has a low (11)
volcanic eruptions.
continental
extrusive
slowly
granite
upper mantle
rocks. Basaltic magma forms when
melt. This magma contains small amounts of
Basaltic magma fuels relatively quiet
Andesitic magma forms from oceanic crust and (12)
This magma contains about 60 percent silica and has an intermediate viscosity.
(13)
magma fuels volcanoes with intermediate eruptions.
Rhyolitic magma forms deep beneath (14)
This magma has the highest (15)
of magma. It has the same composition as (16)
viscosity, and flows (17)
produces very explosive volcanoes.
(18)
crust.
content of the three types
has a high
magma
rhyolitic
viscosity