Earthquakes, Volcanoes, and Tsunamis Review

Front

What is the inner core of the Earth composed of?

Back

The inner core is composed of solid iron and nickel.

Front

How do scientists infer that the Earth's inner core is solid?

Back

Scientists infer that the Earth's inner core is solid based on the analysis of seismic waves.

Front

What happens to seismic waves when they reach liquid material?

Back

Seismic waves slow down and can be refracted when they encounter liquid material.

Front

What evidence explains the ages of oceanic floor rock?

Back

The oceanic crust at the mid-ocean ridge is now the oldest normal magnetic polarity rock found in the ocean floor.

Front

What caused the major devastation along the coastal areas of Japan during the March 11, 2011 earthquake?

Back

The major devastation was caused by a tsunami.

Front

What is a tsunami?

Back

A tsunami is a series of ocean waves caused by large disturbances, such as earthquakes or volcanic eruptions.

Front

What is 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, generated by earthquakes or other geological activity.

Front

What is the difference between the inner core and outer core?

Back

The inner core is solid, while the outer core is liquid.

Front

What is the role of the asthenosphere in plate tectonics?

Back

The asthenosphere is a semi-fluid layer that allows tectonic plates to move.