Q2 Test 2 Honors

Front

What is a volcanic island arc?

Back

A volcanic island arc is a chain of volcanic islands formed at a convergent plate boundary where two oceanic plates collide.

Front

How do rocks at mid-ocean ridges compare to continental rocks?

Back

Rocks at mid-ocean ridges are younger than continental rocks.

Front

What are hotspots in geology?

Back

Hotspots are volcanic regions that form in the middle of tectonic plates, away from plate boundaries.

Front

What type of boundary is associated with faults and earthquakes?

Back

Transform boundaries are associated with faults and earthquakes.

Front

What is the continental drift hypothesis?

Back

The continental drift hypothesis states that continents once formed a single landmass, broke up, and drifted to their current locations.

Front

What is a mantle plume?

Back

A mantle plume is an upwelling of abnormally hot rock within the Earth's mantle that can cause volcanic activity.

Front

What are convection currents?

Back

Convection currents are the movement of fluid caused by differences in temperature and density, driving plate tectonics.

Front

What is sea-floor spreading?

Back

Sea-floor spreading is the process by which new oceanic crust is formed at mid-ocean ridges and gradually moves away from the ridge.

Front

What happens at divergent plate boundaries?

Back

At divergent plate boundaries, tectonic plates move apart, leading to the formation of new crust.

Front

What occurs at convergent plate boundaries?

Back

At convergent plate boundaries, tectonic plates collide, which can result in mountain formation, earthquakes, and volcanic activity.