PT Review

Convection currents responsible for moving tectonic plates occur in which Earth layer?

• crust

• rigid mantle

• stiffer mantle

• asthenosphere

In which layer does the pressure reach 3.5 million atmospheres?

• crust

• stiffer mantle

• outer core

• inner core

Were is the youngest rock on the ocean floor found?

• near continental edges

• near the mid ocean ridge

• everywhere

• it's all really old rock

At what type of boundary are you likely to find an ocean trench?

• diverent

• transform

• convergent

• strike-slip

What is the density of continental (granite) crust?

• 2.7 g/cm³

• 3.0 g/cm³

• 3.4 g/cm³

• 12.8 g/cm³

What layer of the Earth are you in if your are at a depth of 1000 km?

• asthenosphere

• stiffer mantle

• outer core

• inner core

• lithosphere

What is the temperature at a depth of 6000 km?

• 5700° C

• 4200° C

• 6600° C

• 2700° C

At what depth are you if the pressure is 3 million atmospheres?

• 1000 km

• 2000 km

• 3000 km

• 4000 km

• 5000 km

The Aleutian Trench is located at what type of boundary?

• transform

• divergent

• convergent

• strike-slip

Which of the following is an example of a divergent boundary?

• The boundary between the Nazca Plate and the S. American Plate?

• The San Andreas Fault

• The Mid-Atlantic Ridge

• The boundary at the Mariana Trench