Unit 4 Review

Front

What layers of Earth are included in the lithosphere?

Back

The lithosphere includes the crust and upper mantle.

Front

How do scientists study Earth's structure?

Back

Scientists study Earth's structure by using seismic waves to map and collect data.

Front

What is the difference between a scientific law and a scientific theory?

Back

A scientific law does not explain why something happens but can often be proven with a mathematical equation.

Front

What is one feature of a divergent boundary?

Back

Seafloor spreading is a feature of a divergent boundary.

Front

What happens during seafloor spreading?

Back

As the plates pull apart, the lava rises to form new crust.

Front

What is the definition of the lithosphere?

Back

The lithosphere is the rigid outer layer of the Earth, consisting of the crust and upper mantle.

Front

What are seismic waves?

Back

Seismic waves are waves of energy that travel through the Earth, used to study its internal structure.

Front

What is a mid-ocean ridge?

Back

A mid-ocean ridge is an underwater mountain range formed by plate tectonics, often associated with seafloor spreading.

Front

What drives the movement of tectonic plates?

Back

The movement of tectonic plates is driven by convection currents in the Earth's mantle.

Front

What is a scientific theory?

Back

A scientific theory is a well-substantiated explanation of an aspect of the natural world that is based on a body of evidence.