outer core

Examples (10)

• The outer core of the Earth is composed of liquid iron and nickel.
• Scientists study the outer core to understand planetary magnetic fields.
• Heat from the outer core drives convection in the mantle above.
• The outer core begins approximately 2,890 kilometers below the surface.
• Seismic waves travel differently through the outer core than the inner core.
• The outer core is responsible for generating Earth's magnetic field.
• Temperature in the outer core reaches about 4,000 to 5,000 degrees Celsius.
• The outer core remains liquid due to lower pressure than the inner core.
• Geologists use data about the outer core to model planetary formation.
• The boundary between the outer core and inner core is called the Bullen discontinuity.