The lithosphere consists of

the crust plus the rigid uppermost mantle

S waves cannot pass through the outer core because

the outer core is liquid and liquids have no shear strength

Wegener could not provide a convincing driving mechanism

new crust forms at the ridge and spreads equally to both sides, recording reversals

new basaltic crust forms a mid-ocean ridge

destructive (subduction) boundaries

plates sliding past with shallow, powerful earthquakes and no volcanism

fold mountains with little volcanism

youngest at the ridge and older away from it

14questions. Pick an answer and you'll see why right away.

Which list gives the Earth's compositional layers?
The lithosphere consists of
S waves cannot pass through the outer core because
The Mohorovicic discontinuity (Moho) marks the boundary between
Who first proposed continental drift?
Continental drift was initially rejected mainly because
Magnetic stripes on the sea floor are symmetrical about a mid-ocean ridge because
At a constructive (divergent) plate boundary,
Deep earthquakes along an inclined Benioff zone are characteristic of
At an oceanic-continental destructive boundary, which plate is subducted?
A conservative (transform) boundary is characterised by
Continent-continent collision (such as the Himalayas) produces
Which force is now regarded as the most important driver of plate motion?
New oceanic crust formed at a mid-ocean ridge is