Plate Tectonics

The crust is the Earth's only solid layer.

Abiotic factors are non-living parts of the ecosystem

Which of the following appears to cause movement of Earth's tectonic plates ?

Mid-ocean ridges are associated with __ boundaries

What is the name of the fern that gave evidence of continental drift ?

What type of mountains create the Pacific Ring of Fire ?

How long ago did the super continent begin to split apart?

_____________ is the balance that keeps continents from sinking into the ocean.

A ___ is an underwater mountain range with a rift valley running through it.

Continental drift theory suggests a single land mass broke into 2 pieces called _________

The process by which an oceanic plate slides down the lithosphere-asthenosphere boundary.

The type of tectonic plate boundary involving a collision between two tectonic plates is ___.

If a plate is made up of sea floor, then it cannot be subducted down into the mantle.

The Glomar Challenger contributed to the the theory of plate tectonics by __.

The seafloor moves at which rate per year ?

Mountains are formed by what kind of boundary ?

Antonio Snider did fossil correlations

What is the most important factor used to determine an areas climate?

The youngest rocks on the ocean floor are located ______.

Temperature & pressure ________ toward the center of the Earth.

Areas concentrated with earthquakes along subduction zones are called?

How often does the magnetic field reverse?

Who suggested the seafloor itself is moving as a result of convection currents ?

___ left striations or scars in the bedrock of continents giving evidence of continental drift?

What is believed to cause seafloor spreading ?

This is what kind of boundary ?

___________ is the theorized single sea that surrounded Pangaea.

Which of the following is NOT evidence of sea floor spreading?

Alfred Wegener is best known for his hypothesis of ____.

What type of boundary is where new crust is formed?

Earth's lightest materials make up the ______.

How many major tectonic plates are there?

When this occurs, it is called

The part of the Earth on which the tectonic plates are able to move is the ___.

What are stripes found on both sides of the mid ocean ridge called?

Continental mountain ranges are usually associated with ___ boundaries.

San Andres fault is an example of a _______ boundary ?

What is continental drift

What name was given to the super continent believed to exist prior to the current continents?

This is what kind of boundary ?