His hypothesis was all lands used to be one big land mass called Pangaea, which eventually broke into seven continents -(Audrey)

This geologist came up with the hypothesis about new seafloor constantly being created and spreading. - (Catherine)

The type of rock found most on the seafloor. - (Audrey)

The first scientist (geologist) to use the term 'plate'. - (Andrew)

The part of a plate that sinks back into the mantle. - (Aleks)

The reason for the rejection of Alfred Wegener's hypothesis about Pangaea - (Tianxin)

This seafloor mountain range wraps around the earth like the seams of a baseball. - (Anoopa)

The material scientists use to record magnetic reversals. - (Sarah)

California lies on these two plates. - (Cameron)

The measurement that plates move each year. - (Leonard)

The point in time when Pangaea started to break apart.- (Harry)

These waves pulse off of sonar equipment onto the boat, to the seafloor and return to give scientists an accurate measurement of depth. - (Karis)

The tool scientist use to measure Earth's magnetic field.- (Tianxin)

The large brittle, cracked pieces of earth's outer shell. - (Saif)

A network of satellites used to determine locations on earth. - (Ty)

Wegener studied this plant to support fossil evidence and found its species in present-day South America, Africa, India, Austrialia and Antartica. -(Sarah)

This process seems to explain contiental drift because it results in the slow process of continents shifting. - (unknown)

The pattern that oceanic crust makes because it contains alternating strips of rock with normal and reversed magnetic polarity. - (unknown)

These two natural events often occur where two plates meet. - (Peyton)

The two forces that control the movement of plates. - (John)

These four pieces of evidence help to support the theory of Pangaea- (Joyee)

The process that causes hot magma to come out from the Mid-Ocean Ridge and create new seafloor when it spreads and cools. - (Jordan)

This can be measured by using the distance of magnetic rock from the Mid-Ocean Ridge and comparing it to the rock's age. - (Joyee)

This drives convection in the mantel, which in turn moves plates.

When a slab bends or breaks, this occurs.