LT11-13B Flashcard Review ESSC

Front

What is the outer core?

Back

The outer core is a liquid layer of the Earth's interior located beneath the mantle and above the inner core, characterized by extremely high temperatures and pressures, approximately 2.5 million atmospheres.

Front

What geological feature is formed at a convergent boundary?

Back

Convergent boundaries occur where two tectonic plates collide, leading to the formation of mountain ranges, such as the Himalayas.

Front

What is sea-floor spreading?

Back

Sea-floor spreading is the process by which new oceanic crust is created at mid-ocean ridges as tectonic plates diverge, causing the ocean crusts to move apart.

Front

What is the temperature of the Stiffer Mantle?

Back

The Stiffer Mantle can reach temperatures of approximately 4,000 degrees Celsius.

Front

What type of crust is primarily composed of granite?

Back

Continental crust is primarily composed of granite, which is less dense than the basalt that makes up oceanic crust.

Front

What is a divergent boundary?

Back

A divergent boundary is a tectonic plate boundary where two plates move away from each other, often resulting in the formation of new crust, such as at mid-ocean ridges.

Front

What is the asthenosphere?

Back

The asthenosphere is a semi-fluid layer of the Earth's mantle located beneath the lithosphere, allowing for the movement of tectonic plates.

Front

What is the difference between oceanic and continental crust?

Back

Oceanic crust is thinner and denser, primarily composed of basalt, while continental crust is thicker and less dense, primarily composed of granite.

Front

What happens at a transform boundary?

Back

At a transform boundary, two tectonic plates slide past each other horizontally, which can cause earthquakes.

Front

What is the inner core?

Back

The inner core is the solid, innermost layer of the Earth, composed mainly of iron and nickel, and is under immense pressure and temperature.