Chapter 2- Earth's Interior Structure

How dense is the inner core?

13.5 g/cm^3

What is the density of continental crust?

2.7 g/cm3

what is the thickness of the mantle?

2900 km (1800 mi)

What is the density of oceanic crust?

3.3 g/cm^3

What is the thickness of continental crust?

30-60km (22-25 mi) >70 km (40 mi) in some mountainous regions

How thick is the core?

3500 km

What is the temperature range of the mantle?

5,100 F near the core 3,300 F near the crust

What is the temperature range of the core?

5,400 to 12,000 F

What is the thickness of oceanic crust?

5-7 km (5 mi)

What percentage of the earth's volume is the mantle?

80%

What is the composition of oceanic crust?

Basalt

How are earth's layers subdivided?

Based on physical properties of solid/liquid, composition, and density

What change does Moho have? Chemical or physical

Chemical

What are the types of crust?

Continental and oceanic

What creates the asthenophere?

Extreme heat and pressure creates plastic (molten fluid) nature of rock

Why is the outer core important to the Earth's Magnetic Field?

Fluid movement of molten iron generates the magnetic field

What are the remaining mantle's two segments?

Inner core and outer core

Asthenophere

Layer of soft, plastic rock

What is the outer core composed of?

Liquid molten iron-nickel alloy

What sections is the mantle divided into?

Lithosphere and Asthenophere

What is the composition of continental crust?

Many rock types (includes granite)

What changes the velocity of Moho?

Seismic waves

The inner core is made of what?

Solid iron

What is the mantle made of?

Solid layer of peridotite (olivine, iron, magnesium, silicates) with more liquid properties

Lithosphere

Solid uppermost part of the mantle plus the crust, more dense/rigid than asthenosphere

Crust

Thin, solid (brittle) outer layer

Mohorovicic discontinuity (Moho)

boundary between crust and mantle

Interaction between lithosphere and asthenosphere

catalyst for plate tectonics

What are the layers of the earth?

crust, mantle, outer core, inner core

What is the core composed of?

iron and nickel