‘It’s almost science fiction’: Scientists say the shape of Earth’s inner core is changing
Researchers studying decades of earthquake data say they have found the first evidence that, in addition to spinning backward ...
Earth’s Core Is Changing Shape
A new study shows that the inner core changed shape in just a few decades, challenging previous assumptions and revealing ...
Nature3y
Lesson 6: Seismic Waves
In this lesson, students learn about different types of seismic waves on the basis of where and how the waves move. In addition, students discuss how scientists use earthquake waves to investigate ...
BBC1y
P and S waves' paths through Earth
A surface wave travels along the surface of the Earth. It is the slowest of the three types of seismic wave. Surface waves usually have larger amplitude than the other waves and cause the most damage.
Mysterious Areas In Mantle Are Slowing Down Seismic Waves
Scientists have known that seismic waves slow down when passing through ultra-low velocity zones, or ULVZs, but only knew ...
BBC1y
Structure of the Earth
The core itself consists of a solid inner core and a liquid outer core. There are three types of seismic waves – P waves, S waves and surface waves. P waves are longitudinal waves, and their ...