The science of studying ancient earthquakes is known as _______.
The Hawaiian Islands are composed of what type of volcanoes?
Sulfur dioxide, which is released during volcanic eruptions, forms small droplets in the atmosphere called _______.
The eruption of _______ in 1815 resulted in the “year without a summer”.
_______ are the first waves to leave the focus after an earthquake.
Diamonds are incorporated in solidified magma called _______ that originates deep within Earth.
The crust is thicker under the oceans than it is under the continents.
Mt. St. Helen's erupted on May 18, 1980 and blanketed most of the northwestern United States with ash.
A _______ is a mixture of molten and solid rock.
The scientific study of earthquakes and seismic waves is known as _______.
The volcanic lake in Cameroon that released carbon dioxide and killed 1700 people in 1986 is called _______.
The Modified Mercalli Intensity Scale qualifies the effects of an earthquake on humans, objects of nature, and man-made structures on a scale of I through XII, with I denoting a weak earthquake and XII one that causes almost complete destruction.
Satellite images can be used to detect changes in a volcano’s surface temperature.
When magma is injected horizontally between layers and solidifies, a(n) _______ forms.
The death of this person was due to a lava flow the eruption of Mt. Vesuvius in 79 AD.
A Strombolian eruption produces cones of loose volcanic rocks known as _______
The temperature at which magnets lose their magnetism is known as the _______.
Earth's _______ is liquid and extends between 2883km and 5140km beneath the surface.
In the figure below, which layer of the Earth is the thickest?
Large, loose pyroclasts welded together during an eruption are known as _______.
The _______ is Earth's rocky, outermost layer.
The boundary that separates the crust from the mantle is known as the _______ Discontinuity.
The ejecta from a volcano are collectively known as tephra.
Fragments of unmelted rocks that are sometimes incorporated in magma are known as
_______ igneous rocks are composed of dark-colored minerals rich in magnesium and iron.
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