Proposed his hypothesis of continental drift
ALFREDWEGENER
(?) currents in the mantle drive this process
CONVECTION
Atoms are composed of: nucleus and (?)
ELECTRONS
(?) of the crust
EXPANSION
The (?) field is the magnetic field of the earth
GEOMAGNETIC
(?) is a mixture of silt and clay
MUD
Sediments can be classified in two ways, size and (?)
ORIGIN
Past super continent
PANGEA
(?) is the frequency, magnitude, and distribution of earthquakes
SEISMICITY
Size is based on the (?) grain-size scale
WENTWORTH