Plate Tectonics and The Nature of Volcanic Eruption
Mountains and Plates
Miscellaneous
100
Earth’s core is made of an alloy of ______________________ .
What is iron and nickel?
100
A divergent plate boundary at two continental plates can result in a ______________________ .
What is a rift valley?
100
The particles produced in volcanic eruptions are called ____________________ .
What is pyroclastic material?
100
What type of stress is dominant at divergent plate boundaries?
What is tensional stress?
100
Which type of landform develops at plate boundaries where one oceanic plate descends beneath another?
What is a volcanic island arc?
200
Earth’s inner core is solid because of _______________________ .
What is immense pressure?
200
What type of boundary occurs where two plates move together, causing one plate to descend into the mantle beneath the other plate?
What is a convergent plate boundary?
200
What is the most abundant gas associated with volcanic activity?
What is water vapor?
200
As erosion removes the tops of mountains, the crust will rise upwards. This is an example of ________________________ .
What is isostatic adjustment?
200
Most intraplate volcanic activity occurs where ___________________________________________ .
What is hot mantle plumes rise to the surface?
300
How would you characterize an S wave?
What is
a. They travel more slowly than P waves.
b. They shake particles at right angles to the direction the waves travel.
c. They cannot be transmitted through water or air.
300
New ocean crust is formed at ____________________ ,
What is divergent boundaries?
300
The broad, slightly dome-shaped volcanoes of Hawaii are _______________________ .
What is shield volcanoes?
300
What force controls the isostatic adjustment of Earth’s crust?
What is gravity?
300
All changes in the original shape and/or size of a rock body are called _____________________ .
What is deformation?
400
Deformation in which the object returns to its original shape and size after the stress is removed is called ________________________ .
What is elastic deformation?
400
Which of the following results when divergence occurs between two oceanic plates?
What is seafloor spreading?
400
A volcano that is fairly symmetrical and has both layers of lava and pyroclastic deposits is a _____________________ .
What is a composite cone volcano?
400
Because of isostasy, a mountain will ultimately __________________________ .
What is be eroded to near sea level?
400
Under what conditions do rocks exhibit ductile deformation?
What is high pressure and temperature?
500
The type of deformation in which the object permanently changes size and shape without fracturing is called ____________________ .
What is ductile deformation?
500
Oceanic lithosphere is destroyed at __________________ .
What is convergent plate boundaries?
500
What plays a major part in determining the form of a volcano?
What is magma composition?
500
The process of isostatic adjustment states that ____________ sections of crustal material float ______________ than thinner slabs.
What is thicker sections and float higher?
500
The process of establishing a new level of gravitational balance.