Natural Changes in the Andes

Natural Changes in the Andes

Station Activity Review & Constructing Explanations from Evidence

Plate Motion

The oceanic Nazca Plate and the continental South American

Multiple Choice

What type of plate boundary exists between the oceanic Nazca Plate and the continental South American Plate?

• Convergent Collision

• Convergent Subduction

• Divergent

• Transform

Multiple Select

Select all of the effects of plate motion in the Andes

• Mountain Formation

• Volcano Formation

• Earthquakes

• Erosion

Open Ended

Explain how the mountains in the Andes were formed using what you learned about plate motion. (Hint: recall the analogy with the car hitting the brick wall.)

Earthquakes

Earthquakes happen frequently in the Andes.

Multiple Choice

Which of the following is the cause of earthquakes in the Andes?

• The plates slide against each other smoothly, causing an earthquakes.

• There is friction between the plates as they slide against each other. This rough movement causes an earthquake.

Multiple Select

Select all of the effects of earthquakes in the Andes

• Mountain Formation

• Landslides

• Tsunamis

• Changes in the Location of Cities

Volcanoes

The volcanoes in the Andes are very active.

Multiple Select

Magma is created when... (select all that apply)

• The Nazca Plate heats up as it moves toward the hot center of the Earth causing it to melt.

• The Nazca Plate heats up as it rubs against the South American plate causing it to melt.

Open Ended

Why are there volcanoes in the Andes? Use what you know about how magma is created.

Multiple Select

Select all of the effects of volcanoes

• Landslides

• Pyroclastic Flow (hot ash) is released into the air

• Erosion

• New land and land features are created

Weathering and Erosion

Erosion is a big problem in the Andes because of the steepness of the mountains.

Multiple Select

Select all of the causes of weathering and erosion.

• Earthquakes

• Volcanoes

• Wind

• Water

Multiple Select

Select all of the effects of weathering and erosion.

• Landslides/Mudslides

• Habitat Destruction

• Water Contamination

• Changes to the Landscape (shape and steepness of mountains)