Question

task 2: earths core
earths core is divided into two parts: the inner and outer core. in this task, you will conduct research about the discovery of the parts of earths core.
type your response here:

Explanation:

The discovery of Earth's core parts (inner and outer core) involved seismic studies. Seismic waves (like P - waves and S - waves) were analyzed. P - waves can travel through both solid and liquid, while S - waves can only travel through solids. By observing how these waves behaved as they passed through the Earth's interior, scientists could infer the structure. For example, the outer core was found to be liquid (as S - waves couldn't pass through it in a certain region), and the inner core was solid (as P - waves showed a change in behavior indicating a solid medium).

Answer:

The discovery of Earth's inner and outer core was mainly through the study of seismic waves. P - waves (primary waves) and S - waves (secondary waves) have different properties. S - waves cannot travel through liquids. When seismic waves from earthquakes were analyzed, a shadow zone for S - waves was found, indicating a liquid outer core. Further analysis of P - wave behavior (such as refraction and reflection) helped in understanding the solid inner core.