CKLA Unit 5 Chapter 2

What is the rate at which tectonic plates move apart along the mid-ocean ridge in the Atlantic Ocean?

• 100 to 200 inches per year.
• 1000 to 2000 inches per year.
• About .8-2 inches a year
• 10 to 20 inches per year.

What is the role of heat and pressure in the mantle?

• They drive the movement of tectonic plates.
• They determine the age of rocks along mid-ocean ridges.
• They create new crust at plate boundaries.
• They cause earthquakes and volcanoes.

What is the cornerstone of modern geology?

• Seafloor spreading.
• Core convection.
• Continental drift.
• Plate tectonics.

What process creates new crust along mid-ocean ridges?

• Subduction.
• Seafloor spreading.
• Continental drift.
• Core convection.

What did scientists discover about Earth's interior layers through the study of seismic waves?

• Earth's mantle has a region where the rock is neither liquid nor solid.
• Earth's crust is the outermost layer and is divided into oceanic and continental crust.
• Earth's mantle is made of very hot, very dense rock.
• Earth has four main layers: inner core, outer core, mantle, and crust.

What did Inge Lehmann change our view of?

• Earth's core.
• Earth's crust.
• Earth's mantle.
• Earth's tectonic plates.

How do tectonic plates interact at plate boundaries?

• They remain stationary and do not interact.
• They merge together to form larger plates.
• They move apart, collide, or slide past each other.
• They rotate around a central point.

What process is responsible for the creation of the Andes Mountains?

• Core convection.
• Continental drift.
• Subduction.
• Seafloor spreading.

What are the effects of plate movement at different boundaries?

• The occurrence of earthquakes and volcanoes.
• The creation of new crust and the destruction of old crust.
• The formation of mountains and other surface features.
• All of the above.

How do tectonic plates move?

• In a happy way
• Very quickly and abruptly.
• In a circular motion.
• Very slowly and gradually.