Questions 1 – 5 use the following word bank to place the correct letter in the space that correctly completes the sentence. A. PANGEAB. PLATESC. CONTINENTAL DRIFTD. SEAFLOOR SPREADINGE. DIVERGENT BOUNDARIES1.states that Earth’s continents were joined as a single land mass that broke apart and sent the continents adrift.2.Before the continents broke apart 200 million years ago, there was a single supercontinent called. 3.During , magma rises and hardens to form new crust, which becomes part of the ocean floor.4.Plate tectonics states that Earth’s crust and rigid upper mantle are broken into large slabs of rock called, which move in different directions and at different rates over Earth’s surface.5.At, plates moves apart. High heat flow, volcanism and earthquakes are common here.