Continental Drift & Plate Tectonics

In a tectonic plate demonstration during class, Mrs. Smith

pushed two pieces of modeling clay together. What kind of

plate boundary was the teacher demonstrating?

• Convergent

• Earthquake

• Equator

• Divergent

What is the Theory of Continental Drift?

• New continents are continually being created

  and destroyed.

• The layout of the continents is the same today

  as it has always been

• The continents have always been separate but

  may one day drift together to form a single

  continent

• All the continents were once one continent that

  broke up and drifted apart over hundreds of

  millions of years

Where does magma rise to the top to become new crust?

• one plate splits into two distinct plates

• one plate grinds against another plate

• two plates separate and move apart from one

  another.

• two plates meet and collide with one another.

When crust is neither created nor destroyed, what boundary is it formed along?

• convergent

• divergent

• collisional

• transform

What type of tectonic plate boundary involves a collision of plates?

• transform

• divergent

• convergent

• obstructive

What is responsible for the volcanoes and mountain ranges?

• Weathering

• Super-nocturnal tides

• Hurricanes

• Plate Tectonics

When tectonic plates of more density and less density collide, what happens?

• The plate that is more dense fractures.

• The plate that is more dense rises.

• The plate that is less dense subducts.

• The more dense plate subducts.

Continent to continent plate boundaries produce what feature when they collide?

• Rift Valleys

• Mid-ocean ridges

• Tall mountain ranges

• Deep-sea trenches

What type of boundary exists when 2 plates are pulling apart?

• Convergent

• Transform

• Obtrusive

• Divergent

Where do volcanoes and earthquakes most frequently occur?

• Under the flat surface of plates

• Above the flat surface of the plates

• Along plate boundaries

• At the center of plate