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Objective 36
 Students will provide the key pieces of evidence that
supported the Theory of Continental Drift.
Objective 37
 Students will know the core vocabulary related to the
Dynamic Earth Unit.
Objective 38
 Students will be able to identify the major layers of
the earth and describe their characteristics.
Objective 39
 Students will be able to provide the mechanism for
plate tectonics.
Objective 40
 Students will be able to provide evidence for sea-floor
spreading.
 Specifically:
 The oceanic crust gets progressively older, away from the
Mid-Atlantic Ridge, going both east and west.
 The Earth’s past magnetic field has be recorded in the
basalt that comprises the oceanic crust. The magnetic
record on the east side of the Mid-Atlantic Ridge is a
mirror image of the magnetic record on the west side of
the Mid-Atlantic Ridge .
Objective 41
 Students will use page 5 of the E.S.R.T. to identify plate
boundary types, features found at these locations, and
hot spot locations.
Objective 42
 Using the P-S wave travel time chart and given an S or
P wave, students will be able to determine the
epicenter distance given a travel time, or vice versa.
Objective 43
 Using the P-S wave travel time chart and given both S
and P wave arrival times (lag-time), students will be
able to determine an epicenter distance.
Objective 44
 Students will describe an earthquake shadow zone.
Specifically it results because:
 S-waves cannot travel through the liquid outer core.
 P-waves are refracted because their velocity increases
as they move toward the center of the Earth.
Objective 45
 Students will know the distribution of seismic waves
with respect to the shadow zone. Specifically:
 Up to an angle of 105 degrees, from the epicenter, both
P-waves and S-waves are recorded.
 Neither P-waves or S-waves are recorded in the shadow
zone.
 Only P-waves are recorded at an angle, from the
epicenter, exceeding 140 degrees