What makes up a tectonic plate?

Which property of the asthenosphere helps plates move over it?

Which process supplies some of the heat that sustains Earth's internal motion?

Which region occupies Earth's center?

What is the name for rock melt stored beneath a Philippine volcano?

Which mechanism is represented by the circulating arrows beneath the plates?

At the same pressure, what generally happens to mantle rock when it warms without changing composition?

Why can old oceanic lithosphere sink into the material beneath it?

What causes ridge push at the elevated feature shown?

If the descending oceanic section shown breaks away from the rest of its plate, how would slab pull on the remaining plate change?

For a plate attached to a large, dense slab descending into the mantle, which force is generally its strongest driver?

Which statement correctly compares the physical states of Earth's outer and inner core?

Where should researchers find the youngest oceanic crust in the Atlantic Ocean?

How does new basaltic oceanic crust form at a spreading center?

At an oceanic-continental convergent boundary, what usually happens to the oceanic lithosphere?

Which later development addressed a major scientific weakness in Wegener's continental drift proposal?

Which fossil plant helped Wegener connect widely separated southern continents?

Which fossil discovery would most strongly support Wegener's inference that two continents were formerly connected?

Which long-term change could reduce the activity of Earth's plate-driving system?

Between two continents, an ocean basin widens through spreading at 3 cm/year and narrows through subduction at 5 cm/year. If these rates persist, what long-term change is expected?