ESCI

Which of the following is characteristic of oceanic-oceanic convergent plate boundaries?

Mid-ocean ridges

Which one of the following was evidence used by Wegener to support his idea of continental drift?

Similar rock types on mountains that are today separated by an ocean

Deep ocean trenches are associated with:

Subduction zones

Why are earthquakes found most often at the edges of plates?

The build up and release of tectonic stresses are focused at plate edge

The seafloor magnetic pattern is best described as:

Parallel to and symmetrically-arranged along either side of the midocean ridges.

Alfred Wegner's idea of Continental Drift eventually fell out of favor for what reason?

A reasonable physical mechanism describing how continental rock could move through less dense oceanic rock could not be proposed.

The Mid-Atlantic Ridge is an example of what type of plate boundary?

A transform fault boundary

Confirmation of seafloor spreading was supported by the:

Age of seafloor.

Oceanic crust is composed of_______ and continental crust is composed of _____________ :

Basalt/granite

Choose the one option that does not fit the pattern.

Hawaiian Islands Iceland Galapagos Islands Canary Islands Aleutian Islands

Which one of the following statements about the seafloor can best be explained by seafloor spreading?

Ocean basalt is more dense than continental granite

Vine and Matthews determined that new ocean floor was being produced at mid-ocean ridges by examining:

The magnetic pattern in rocks of the seafloor.

Which of the following statements best describes the relationship between Earth's geographic and magnetic poles?

The magnetic pole drifts, but stays near the geographic pole.

What is the most accurate definition of density

The mass of a substance divided by the volume it occupies

Which of the following is characteristic of oceanic-continental convergent plate boundaries?

volcanic island arcs