Ch. 2 Geography

What is the theory of plate tectonics?

• Earth was created 6,000 years ago.

• Earth is made up of a large number of geological plates that move slowly across its surface.

• Human activities are changing Earth's surface.

• The number of tectonic plates equals the number of continents on Earth.

What geologic structure is created when one tectonic plate dives below another?

• continental crust

• ocean trenches

• convergent plate boundary

• subduction

Beneath Earth's surface, where does the heat exchange occur that moves tectonic plates?

• continental crust

• ocean trenches

• convection cells

• subducting plate

Which of the following features is created at a divergent plate boundary?

• subduction zone

• oceanic trench

• continental crust

• rift valleys

The deepest trenches in the world exceed what depth?

• 15,000 feet

• 25,000 feet

• 35,000 feet

• 50,000 feet

The Himalayas are a prime example of which feature?

• divergent boundary

• convergent boundary

• transform fault

• rift valley

Which of the following locales will feature subduction zones?

• East Africa

• the Pacific Coast of South America

• Iceland

• the Himalayan Mountains

Which of the following is NOT created along convergent plate boundaries?

• deep trenches

• the world's most powerful earthquakes

• mountain ranges and active volcanoes

• rift valleys

An example on Earth of a rift valley is

• the San Andreas fault of California

• Iceland

• the Andes Mountains of South America

• the Red Sea between northern Africa and Saudi Arabia

The San Andreas Fault, traversing coastal California, forms what type of plate boundary?

• subduction zone

• colliding plate boundary

• divergent plate boundary

• transform fault