Chapter 17.1-2 Quiz

Continental drift is the idea that continents now separated by an ocean were once attached.

• True

• False

Plate tectonics is the name given to the single continent that existed 200 million years ago.

• True

• False

A line on a map that denotes crust that formed at the same time is

• Isochron

• Subduction

• Seafloor spreading

• Paleomagnetism

The process that creates new ocean crust by the upwelling of magma at ocean ridges is

• Divergent boundary

• Seafloor spreading

• Subduction

• Ocean trench

The study of the history of Earth's magnetic field is called

• Magnetism

• Magnetometer

• Magnetic reversal

• Paleomagnetism

What device measures magnetism?

• Paleomagnetism

• Magnetometer

• Magnetic reversal

• Isochron

Generally, what is the age of oceanic crust?

• the same age as the continental crust

• younger than the continental crust

• older than the continental crust

• science has never determined its age

Which observation was not instrumental in formulating the hypothesis of seafloor spreading?

• magnetization of the oceanic crust

• depth of the ocean

• thickness of seafloor sediments

• identifying the location of glacial deposits

What process creates deep-sea trenches?

• subduction

• magnetism

• earthquakes

• transform boundaries

What is the correct order (starting from the surface) of Earth’s layers?

• crust, outer core, inner core, mantle

• mantle, outer core, inner core, crust

• crust, mantle, outer core, inner core

• outer core, inner core, crust, mantle