1. Which strategy can scientists use to learn about Earth's deepest layers?
2. What tool has allowed scientists to learn about the characteristics of Earth's layers?
3. What is the Mohorovicic discontinuity?
1. Re-create high-pressure conditions in a lab
2. Seismograph
3. The boundary between the crust and the mantle
100% Q & A maybe mixed around
nobody is correct, i got 100%. thx
1. Scientists can use seismic waves to learn about Earth's deepest layers. Seismic waves are waves of energy that are released during an earthquake. By studying the behavior of seismic waves as they propagate through the Earth, scientists can infer information about the composition, density, and structure of Earth's deep layers.
To get a better understanding of the process, scientists use seismometers, which are instruments that measure and record seismic waves. Seismometers can be placed at various locations around the world, providing data that helps scientists build models of Earth's interior.
2. The primary tool that has allowed scientists to learn about the characteristics of Earth's layers is seismology. Seismology is the study of seismic waves and their behavior as they travel through the Earth's interior. By analyzing the data recorded by seismometers during earthquakes, scientists can gain insights into the composition, density, and structure of Earth's layers.
This information is obtained by studying the properties of seismic waves, such as their speed, direction, and how they are reflected or refracted. By analyzing seismic data from multiple seismometers located at different distances from an earthquake, scientists can create seismic tomography models, which offer a three-dimensional view of Earth's interior.
3. The Mohorovicic discontinuity, also referred to as the Moho, is a boundary or interface between the Earth's crust and the underlying mantle. It was named after the Croatian seismologist Andrija Mohorovičić, who discovered the boundary in 1909.
The Moho marks the transition between the less dense, brittle crust and the denser, more plastic mantle. It is characterized by a significant change in the velocity of seismic waves, which allows scientists to identify its location. Seismic waves traveling from an earthquake source experience a sudden change in speed as they cross the Moho, resulting in a distinct seismic discontinuity.
The Mohorovicic discontinuity plays a crucial role in understanding the structure and composition of Earth's interior. It serves as a boundary between the Earth's solid crust and the semi-solid mantle, providing valuable insights into the different layers and their properties.