plate tectonics

Front

What is a tectonic plate boundary?

Back

A tectonic plate boundary is a place where two tectonic plates meet.

Front

What happens at a divergent boundary?

Back

At a divergent boundary, tectonic plates separate from each other.

Front

What is a transform boundary?

Back

A transform boundary is where two tectonic plates slide past each other.

Front

What occurs at a convergent boundary?

Back

At a convergent boundary, one tectonic plate sinks under another plate.

Front

What is continental drift?

Back

Continental drift is the hypothesis that continents move across the Earth's surface over geological time.

Front

Who proposed the theory of continental drift?

Back

Alfred Wegener proposed the theory of continental drift.

Front

Why was Wegener's hypothesis initially rejected?

Back

Wegener's hypothesis was rejected because he could not explain how or why the continents moved.

Front

What is the main driving force behind plate tectonics?

Back

The main driving force behind plate tectonics is the heat from the Earth's interior causing convection currents in the mantle.

Front

What geological features are commonly found at divergent boundaries?

Back

Mid-ocean ridges and rift valleys are commonly found at divergent boundaries.

Front

What geological features are associated with convergent boundaries?

Back

Mountains, deep ocean trenches, and volcanic arcs are associated with convergent boundaries.