Plate tectonics, Earthquakes, and Volcanoes

Scientists think that the movement of Earth's tectonic plates are caused by convection currents, that are located in the _________?

• crust

• mantle

• outer core

• inner core

Two plates move toward each other at what?

• divergent boundary

• transform boundary

• convergent boundary

• subduction zone

What is the crust that makes up the ocean floor called?

• continental crust

• oceanic crust

• lithospheric crust

• tectonic crust

What is the shaking and trembling that results from movement of rock beneath Earth's surface?

• Tsunami

• Earthquakes

• Volcanoes

• Landslides

When magma reaches the surface, what is it called?

• magma

• lava

• ash

• pumice

What are underwater mountain ranges called?

• mid-ocean ridges

• continental shelves

• oceanic trenches

• seamounts

What is the record of an earthquake's seismic waves produced by a seismograph?

• Richter

• magnitude

• seismogram

• seismic record

What is an area where material from deep within the mantle rises and then melts, forming magma?

• hot spot

• lithosphere

• transform boundary

• subduction zone

New seafloor is formed through the process of what?

• seafloor spreading

• continental drift

• divergent boundaries

• subduction zones

What are the Earth's landmasses called?

• Islands

• Continents

• Peninsulas

• Archipelagos