plate tectonics

Front

What is a divergent boundary?

Back

A divergent boundary is a tectonic plate boundary where two plates move away from each other, often resulting in the formation of new oceanic crust, such as at mid-ocean ridges.

Front

What geologic feature is commonly found at a divergent boundary between oceanic crust?

Back

Mid-Ocean Ridge.

Front

What is a transform boundary?

Back

A transform boundary is a tectonic plate boundary where two plates slide past one another, leading to friction and often resulting in earthquakes.

Front

What geologic event is most likely to occur at a transform boundary?

Back

Earthquakes.

Front

What would cause Earth's tectonic activity to cease?

Back

If Earth's mantle becomes cooler and solid, tectonic activity would end.

Front

How do scientists estimate the thickness of Earth's layers?

Back

By studying seismic waves.

Front

What evidence did Alfred Wegener use to support the theory of continental drift?

Back

Wegener used various pieces of evidence, including fossil distribution, geological similarities, and climate evidence.

Front

What is the theory of plate tectonics?

Back

The theory of plate tectonics explains the movement of Earth's lithosphere, which is divided into tectonic plates that float on the semi-fluid asthenosphere.

Front

What are seismic waves?

Back

Seismic waves are waves of energy that travel through the Earth, often generated by earthquakes, and are used to study the Earth's internal structure.

Front

What is the significance of the mid-ocean ridge?

Back

The mid-ocean ridge is significant as it is the longest mountain range in the world and is a site of seafloor spreading where new oceanic crust is formed.