The Outer Layer
Plate Boundaries
Plates
Evidence
100
Earth’s entire outer layer under the soil or water is this.
What is hard, solid rock?
100
The place where two plates meet.
What is... Plate Boundary?
100
This is the type of boundary when 2 plates slide past each other.
What is ... a transform boundary?
100
This is the age of the rock found at divergent plate boundaries at oceanic plates.
What is young rock OR new rock or baby rock OR 0-40 million year old rock?
200
Earth's outer layer is divided into these.
What are... plates?
200
A sudden shaking of Earth's surface.
What is... Earthquake
200
This is the rate that the plates move at each year.
What is centimeters per year?
200
This is one piece of evidence that Alfred Wegener used to support his theory that Earth's plates move slowly over time.
Edges of continents that fit together like puzzle pieces, some identical landforms, common fossils
300
The name of the supercontinent that existed about 220 million year ago.
What is ... Pangaea?
300
This is the type of plate boundary found between the two continents where Mesosaurus fossils can be found.
What is... Divergent?
300
This is what can cause earthquakes.
What is ... plate movement/motion?
300
The correct order of Earth's layers starting with the layer that we live on (minimum of 3).
Outer layer (crust), Mantle, Core
400
This is a long, deep indentation in the ocean floor formed when 2 plates move together.
What is a trench?
400
This is an example of a geological event that could take place near a plate boundary because of plate movement.
What is... Earthquake or Volcanic Activity?
400
This is created by a divergent plate boundary and found in the middle of the ocean between South America and Africa.
What is ... a mid-ocean ridge?
400
Similar rock formations were formed at the same time in South Africa and Brazil and are made of the same types of rocks. This could explain how these rocks got so far apart.
What is plates moved apart (diverged)?
500
This is the name of the material that rises up between two divergent plates which eventually forms hard rock.
What is magma OR soft, solid rock OR mantle material?
500
This is a location (number) where a mid-ocean ridge is found.
What is number 4?
500
This is what happens to the soft, solid rock from under the plates when two plates move away from each other?
What is . . . the rock rises and hardens to add solid rock to the edges of both plates / new crust is created?
500
Magnetic patterns in seafloor rock are found due to this phenomenon that occurs every 500,000 to 800,000 years.
What is Earth's magnetic field (reversing or changing)?