CATEGORY 1: BASICS
What is a broad, gently sloping dome?
This is the overall shape of a shield volcano.
What is Mauna Loa?
The largest shield volcano on Earth is found in Hawai
What are lava flows?
Shield volcano hazards often include these slow-moving flows.
What is a hotspot?
Most shield volcanoes form over this type of mantle hot region.
What is basaltic lava?
Shield volcanoes are mainly built from this type of lava.
What is Mauna Kea?
This volcano is the tallest on Earth when measured from its base underwater.
What are lava tubes?
Long tunnels formed by flowing lava that later empty out.
What is a divergent boundary?
Shield volcanoes also form where plates move apart, called this.
What is low viscosity?
This term describes the lava's ability to flow easily.
What are the Hawaiian Islands?
These islands are known for shield volcanoes formed by a hotspot in the Pacific.
What is silica?
Lava from shield volcanoes spreads far because it has low amounts of this substance.
What is seafloor spreading?
This process at mid-ocean ridges creates new crust and shield volcanoes.
What is effusive (non-explosive)?
Shield volcano eruptions are usually this type.
What is Iceland?
Shield volcanoes are also found on this diverging boundary island nation.
What is sulfur dioxide (SO2)
This gas from eruptions can irritate eyes and cause acid rain.
What is a convergent boundary?
This type of boundary, known for explosive volcanoes, rarely forms shield volcanoes.