Dynamic Crust Regents Review

Front

Compared to the oceanic crust, the continental crust is

Back

less dense and more felsic

Front

Which landmass is moving northward with Australia as part of the same tectonic plate?

Back

India

Front

Earth's internal heat is the primary source of energy that moves the lithospheric (crustal) plates.

Back

moves the lithospheric (crustal) plates

Front

The arrival time of the first earthquake P-wave at a seismograph station was 10:11:20 (hours:minutes:seconds). If the epicenter of the earthquake is 8000 km away, what was the approximate arrival time of the first S-wave from this earthquake?

Back

10:09:20

Front

At station A, the first P-wave arrives 11 minutes 40 seconds after the earthquake. How long after the first P-wave arrives will the first S-wave arrive?

Back

9 mins 40 secs

Front

The Aleutian Islands extend westward from southern Alaska to form the northern boundary of the Pacific Ocean. These volcanic islands were formed by the nearby

Back

subduction of an oceanic plate

Front

When the seafloor moves as a result of an underwater earthquake and a large tsunami develops, what will most likely occur?

Back

Severe destruction will occur in coastal areas.

Front

Which tectonic plate boundary is best represented by this diagram? Options: Nazca Plate and Pacific Plate boundary, Scotia Plate and South American Plate boundary, Juan de Fuca Plate and North American Plate boundary, Antarctic Plate and Indian-Australian Plate boundary

Back

Juan de Fuca Plate and North American Plate boundary

Front

Which type of tectonic plate boundary is located at mid-ocean ridges?

Back

divergent

Front

Which mantle hot spot is located closest to a mid-ocean ridge?

Back

Easter Island