Quiz 2: Volcanos

Select all of the answers that apply. Which of the following are beneficial products of volcanic activity?

the Hawaiian Islands geothermal energy sills

To living organisms, the most dangerous debris from tephra is probably _____, because it spreads so widely.

volcanic ash

Label the structure and interior features of this volcano.

Crater - C Central Vent - B Magma Chamber - A Dike - E Sill - F laccolith - G batholith - D

The Pacific plate collides with and is subducted under four other crustal plates. The area where this happens has lots of volcanic activity. This area is called the _____.

Ring of Fire

Which of the following are warning signs of a volcanic eruption?

The temperature of the water over a volcano has risen significantly. -There's an increase in seismic activity near a volcano. -Smoke plumes are rising out of the crater.

A volcanic eruption can be predicted.

True

If you had to measure the amount of sulfur dioxide coming out of a volcano, what instrument would you use?

a correlation spectrometer

A natural disaster produced by volcanic activity that has killed more people than lava flows is _____.

a landslide or mudslide

_____ magma is a mix between basaltic and rhyolitic magma. The eruption that would most likely result from this magma is a _____ eruption.

andesitic, strombolian

Mount Tambora in Indonesia erupted and caused the "Year without a Summer." Over 100,000 people died from starvation because of the resulting _____.

climate change

If you look up at the Mayon volcano in the Philippines, you'll notice a very tall, steep, and sleek cone. Apparently, this volcano erupted very violently in the past, spewing out both lava and volcanic rock material. The Mayon is a _____.

composite volcano

This feature occurs in an area where water is heated under ground to the point of boiling. When the water and steam build, they finally rise through a vent on the surface, spraying water and steam high up into the air. This feature is a _____.

geyser

A tiltmeter is a volcanic monitoring tool that measures _____.

ground swelling

Select all of the answers that apply. The following are geological features of volcanic activity:

intrusive and extrusive igneous rock, volcanic necks, flood basalt plateaus, calderas and craters

_____ are geological features created by rhyolitic magma. Rhyolitic magma promotes _____ eruptions.

lava domes, plinian

A volcano with basaltic magma would probably _____.

not erupt at all, but remain in the magma chamber and cool .

Select all of the answers that apply. Which of the following help create volcanoes?

plate tectonics, cracks in Earth's crust, built up magma

Plinian eruptions are the most powerful type of eruption. They are usually caused by _____ magma.

rhyolitic

As for earthquakes, ___ can be used to monitor tremor activity of volcanoes.

seismograph

Mauna Loa and Mauna Kea are the tallest volcanic mountains on Earth. They have broad, shallow slopes. What kind of volcanoes are they?

shield