9. Explain to students that seismic waves travel fast, on the order of kilometers per second. The speed of a seismic wave depends on many factors. Ask students to think about a few factors that ...

To find out, the team used whole-Earth oscillation data from 104 past earthquakes to create a detailed 3D model of the upper ...

Research on hidden structures deep within Earth’s mantle challenges theories about our planet’s middle layer and could ...

These ancient buried "super-continents"—known to scientists as large low-seismic-velocity provinces (LLSVPs)—were found ...

Continent-size islands deep inside Earth's mantle could be more than a billion years old, a new study finds.

Deeply hidden in Earth’s mantle there are two huge ‘islands’ with the size of a continent. New research from Utrecht ...

Scientists have discovered hidden treasures in the Earth's mantle. Hidden deep within Earth's mantle are two colossal ...

The heavier one sinks into the mantle. Traditionally, positive seismic wave speed anomalies in the mantle were attributed to “cold slabs” — remnants of subducted tectonic plates. Essentially ...

Seismic waves from one of those earthquakes ... The presence of hydrous silicates could also tell seismologists something about the speed of slab subduction in the region. The hydrous magnesium ...

Scientists from Utrecht University have discovered two enormous structures deep in Earth's mantle, suggesting that these ...

Features of waves – WJEC Key terms for the features of waves are introduced, and the properties and uses of the EM spectrum, wave speed calculations and satellite communication are also covered.