EPS SCI 15 - Lab 1 & 2 Study Deck

EPS SCI 15, Spring 2026

[Density] = (**in this class)

g/cm³

Density=

mass/volume

Archimedes Principle

Floating object displaces it’s weight in fluid

Isostacy

Rigid lithosphere is floating in isostatic equilibrium with the asthenosphere (plastic region of mantle)

Density of Continental Crust

2.7 g/cm³

Density of Oceanic Crust

3.0 g/cm³

Density of Mantle Lithosphere

3.3 g/cm³

First Layer of Earth

Crust

Continental crust is what material?

Granite

Oceanic crust is what material?

Basalt

Second Layer of Earth and Sublayers

Mantle, upper lithospheric mantle, aesthenosphere, mesosphere

Lithosphere is made up of…

crust, upper mantle

Last layer of Earth

Core

The inner core is __, and the outer core is __.

solid, liquid

Passive (Atlantic) Margins

Continental shelf, Continental slope, Continental rise, Abyssal plain, MOR, No plate boundary

Active (Pacific) Margins

Continental shelf, Narrow continental shelf, Absent continental rise, Trench, Abyssal Plain, MOR

Passive Margins have __ degree of tectonic activity.

low

Active Margins have __ degree of tectonic activity.

high

Ridge crests are offset by…

perpendicular fractures

From canyons, sediments flow out as…

Turbidity currents

Turbidity current deposits merge with the abyssal plains to form the…

continental rise

Vertical Exageration=

Vertical Scale/Horizontal Scale

Scale=

Map/Actual

Bathymetry Contours: When depth increases going outward in a V/V points downhill, it’s a…

peak, mountain, ridge

Bathymetry Contours: When depth decreases going outward in a V/V points uphill, its’s a…

valley, trough