Benchmark Practice

What is the name of the area where one crust slides underneath another

• no flex zone
• subduction zone
• transverse zone
• school zone

Identify layer  #20.

• mantle
• asthenosphere
• inner core
• outer core

The layer of Earth made of molten iron and nickel is known as the 

• outer core
• inner core
• mantle
• asthenosphere

For a mineral to be considered an ore, which requirement must it meet?

• It must be a common mineral
• Its production must not create pollution
• It must be naturally occurring
• Its production must generate a profit

A pearl is not considered a mineral because it is __________.

• Crystalline Structure
• Naturally Occurring 
• Solid
• Organic

Rocks that come from hot lava and magma that is cooled and hardened are called:

• Metamorphic
• Igneous
• Sedementary
• Comets

Rocks that are made from bits of rock that have been pressed together under water are called:

• Metamorphic
• Igneous
• Sedementary
• Moonstone

According to Wegener's hypothesis of continental drift, 

• Earth's surface is made up of seven major landmasses
• the continents DO NOT move
• Earth is slowly cooling and shrinking
• the continents were once joined together in a single landmass

A place where two plates slide past each other, moving in opposite directions, is known as a

• transform boundary
• divergent boundary
• convergent boundary
• rift valley

A divergent boundary is a boundary between two plates that ____

• move toward each other
• undergo subduction
• move away from each other
• slide along each other