6th (6.10D - Plate Tectonics/Geological Events) Part 2

What is a divergent boundary?

• one big continent or land mass

• a plate boundary where two plates move toward each other

• a plate boundary where two plates move away from each other

• the point on Earth's surface directly above an earthquake's focus

What is a convergent boundary?

• The theory that pieces of Earth's lithosphere are in constant motion, driven by convection currents in the mantle.

• One big continent or land mass.

• Th process by which oceanic crust sinks beneath a deep-ocean trench and back into the mantle at a convergent plate boundary.

• A plate boundary where two plates move toward each other.

What is subduction?

• The theory that the Earth's continents have moved over geologic time.

• Developed Continental Drift Theory

• One big continent or land mass

• The process by which oceanic crust sinks beneath a deep trench and back into the mantle at a convergent plate boundary.

Tags

NGSS.HS-ESS1-5

NGSS.HS-ESS2-1

Which statement best describes the geologic process that is most likely responsible for the formation of mountains?

• They are along a transform plate boundary that is no longer active, so erosion is creating deep valleys.

• They are along a transform plate boundary in which plates are currently moving side by side, causing earthquakes and faults.

• They are along a plate boundary in which plates are currently converging, causing uplift and steep slopes.

• They are along a plate boundary in which plates diverged in the distance past, allowing new rock to build up.

Tags

NGSS.HS-ESS1-5

NGSS.HS-ESS2-1

A mid-ocean RIDGE is located at the boundary of two tectonic plates. Which diagram correctly models the relative plate motion on each side of a mid ocean ridge?

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NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

Rift valleys can form when fractures in Earth's crust widen. The valley walls slowly move at a rate of only a few millimeters a year. Which of these best describes the type of tectonic activity that forms rift valleys?

• Rift valleys form where a continental plate moves under an oceanic plate

• Rift valleys form where a plat slides horizontally past another plate

• Rift valleys form where two plates move away from each other

• Rift valleys form where an oceanic plate moves under another oceanic plate

Tags

NGSS.MS-ESS2-2

The San Andreas fault is a transform fault. The map below shows a student's approximation of where the fault line crosses through the United States. Students were asked to make maps predicting which way land would most likely move over thousands of years.

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NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

A mid-ocean ridge separates the Pacific plate and the Nazca plate off the western coast of South America. Which statement best describes the relative motions of the Pacific and Nazca plates?

• The Pacific and Nazca plates are moving to the east

• The Pacific and Nazca plates are both moving to the west

• The Pacific plate is moving to the west, and the Nazca plate is moving to the east

• The Pacific plate is moving to the east, and the Nazca plate is moving to the west

Tags

NGSS.MS-ESS2-3

The image shows a plate boundary. Arrows have been added to indicate the movement of the plates. What plate boundary feature is also shown?

• A ridge formed by an inactive convergent boundary

• A valley forming at an active divergent boundary

• A fault forming at an active transform boundary

• A volcano formed by an active transform boundary

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

The map shows the locations of four active volcanoes in the Caribbean Sea. What do these volcanoes indicate about plate tectonics in the region?

• The volcanoes form an island arc, indicating a converging plate boundary

• The volcanoes form a line, indicating a diverging plate boundary

• Two plates are moving past each other, causing faulting and magma formation

• Two plates are moving apart, creating new seafloor

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3