Column 1
This factor does NOT effect the speed of a seismic wave. (according to study guide)
What is season of the year?
Secondary waves do this when they hit the liquid outer core.
What is "stop"?
Basaltic magma produces nonexplosive eruptions such as those here.
Where is Kilauea?
True or False: Looking at a map showing world-wide earthquake distribution related to location of plate boundaries, earthquakes most frequently occur along plate boundaries.
True!
Primary waves do this when they hit the liquid outer core.
What is "slow down"?
Volcanoes form here.
What is at convergent plate boundaries, divergent plate boundaries, and over hotspots in the middle of plates?
One of the following is NOT studied by geologists to predict volcanic eruptions? a) change in shape of the volcano b) earthquake swarms c) animal behavior or d) ground formations
What is animal formation?
True or False: A normal fault is where forces push two blocks of rock together. (If false, state what kind of fault is described).
False: What is a reverse fault?
This is a positive result of volcanic eruptions.
What is rock and soil being enriched with valuable nutrients?
These kinds of waves are the first to reach a seismograph after an earthquake.
What are primary waves?
If, after an eruption, the top of a volcano collapses down, this forms.
What is a caldera?
For the Richter scale, each increase on the scale represents ten times the amount of ground motion recorded on the seismogram. This is how much more motion there is for a magnitude 7 earthquake than a magnitude 4 earthquake.
What is 1000 times?
This sometimes forms where Earth's plates are coming together and one plate is forced under another, produces explosive eruptions, and is thisc and gas gets trapped, causing pressure to build up.
What is silica-rich magma?
Most earthquakes occur in the oceans and on this part of continents.
What are the edges of continents?
If you wanted to avoid earthquakes, you would be best to live in a) the largest island in Hawaii b) the Great Lakes region c) southern Alaska or d) the West coast.
What is "the Great Lakes region"?
When the forces on rocks is great enough, they break, producing vibrations called these.
What are earthquakes?
The movement of two blocks of rock along a fault causing an earthquake to occur are a) sliding horizontally past each other b) moving toward each other c) pulling away from each other, or d) any of the above.
What is "any of the above"?
These kinds of waves are the most destructive seismic waves.
What are surface waves?
Kilauea in Hawaii is the world's most of this kind of volcano.
What is an active volcano?
Volcanoes can form over a plume, or rising current of hot mantle. As a tectonic plate slowly moves over a plume, a volcano will form and then die as it moves away from the hot spoot. Then the next volcano will form. If the hot spot shown in the picture of the Hawaiian islands made all the islands in the figure (see study guide), is the plate pictured moving toward you or away from you?
The plate is moving away from me.
True or False? "Today, people are never killed by volcanic eruptions." and "There is no relationship between plate tectonics and volcanoes."
False!
To locate this part of an earthquake, scientists use information from three seismograph stations.
What is an epicenter?
P waves and S waves are abbreviations for these two types of earthquake waves.
What are primary and secondary waves?
True or False (Two Parts, Two Possible Answers!):
1) Volcanoes can form on the ocean floor.
2) Cinder cone volcanoes produce quiet eruptions.
1) True and 2) False!
Seismologists use this to describe the magnitude of earthquakes.
What is the Richter scale?