photographic evidence

Photographic

EvidenceShirleyka Hector

Class-JEarth Science/Ms. Kara

Transform Boundary

At a transform plate boundary, plates move pass one another causing

earthquakes or tsunamis.This picture shows a transform boundary

located in California. It is known as the San Andreas Fault.

The plates at this fault are one oceanic plate(Pacific Plate) and one continental

plate(North American plate.)

Convergent Boundary

Two continental crust coming together at a convergent boundary make a mountain.

This mountain covered in snow is Mount Everest, the world’s highest mountain.

Mount Everest was created when two plates, the Indian tectonic plate and the

Eurasian Plate came together.

Divergent Boundary

• At a divergent boundary, plates move in different directions—away from each

other.• The picture above shows a rift valley in

Africa known as the great Rift Valley.• The picture below shows the Mid-Atlantic

Ridge.

Subduction Zone

• At a subduction zone. Two plates collide, one of which goes under the other one

into the mantle.• As a result, three features could be

created, which are trench, volcanic arc, and island arc.

-Picture 1 shows the South Aegean Volcanic Arc.

-Picture 2 shows the Mariana Trench.

-Picture 3 shows the Ryukyu Islands.

Fault Zone

A fault zone is an area where there are many faults close together.

The picture above shows fault zones located in Texas on the North American plate.

Hot SpotA hotspot is a place where magma from the mantle keeps shooting up.

As a result, islands such as the Hawaiian islands below are created.

Ring of FireThe Ring of Fire is a zone where there are

lots of volcanic activities. It is located along the perimeter of the

Pacific ocean.

This picture is a photo of a volcano in the ring of fire. It

erupts a lot and there are lots of

earthquakes nearby.

VolcanoesVolcanoes are made when magma from the

mantle goes up to the earth’s surface. There are many types of volcano. They are Shield Volcano,

Cinder Cone Volcano, and Composite Volcano.

This picture is a picture of a composite volcano. This volcano is called Mayon Volcano and it is

located in the Philippines.

This picture shows a shield volcano. This volcano is called Mauna Loa volcano and it is

located in Hawaii.

This is a chain of cinder cone volcanoes called Mauna Kea

and they’re located in Hawaii.

Mountains• Mountains are formed when two plates come

together at a convergent boundary. In the diagram

two continental plates converge to make the

mountain that you see.

There are four types of mountain. They are Dome, Volcanic, Fault Block Mountain/Horst-Graben, and

Folded Mountain.

This picture is a picture of the Black Dome Mountain in New York. Dome mountains are formed when

magma from the mantle pushes up.

Fault Block Mountains are formed by

movements along faults. Plates pull to opposite sides and land slides

downward. This picture shows a fault block

mountain in the Yosemite valley.

Folded Mountains are formed by pushing and

folding of rocks. This picture shows Heaven's Peak-a

folded mountain.

This picture shows volcanic mountains called Three Sisters Peaks, which are located in central Oregon. Volcanic mountains are formed by dead volcanoes,

meaning volcanoes that no longer erupt.

Tsunamis• Tsunamis are forms by earthquakes , landslide, or

volcanic activities under the ocean.

This picture shows the

tsunami that hit Japan in 2011.

Analysis

Earthquakes can happen due to any plate movements at all boundaries, such as divergent boundary, convergent boundary, or transform boundary. However, earthquakes mostly happen at transform boundaries—boundary where two plates slide pass each other causing tension in between the two plates. Why do you think there are earthquakes in Southern California? It is because there is a transform boundary in the area. Remember California is part of Ring of Fire, which means it is really close to the Pacific Plate. According to Earthquake Track, there have been 6,603 earthquakes in the past year in California only. This piece of evidence shows that the plates at the San Andreas Fault is very active. According to Huffington Post, the San Andreas Fault, “stretches the length of California, meandering from deserts to mountains to coastline and even out to sea. The two tectonic plates which meet at this fault line are heading in different directions This causes them to grind against each other occasionally.” This piece of information confirms what I said about why earthquakes mostly happen at transform plate boundaries. In conclusion, scientists predict that part of California might detach itself from the United States if the plates continue to move in different directions at the rate they are moving now.