Reflection is the change in direction of a wavefront at an interface between two different media so that the wavefront returns into the medium from which it originated . Common examples include the reflection of light, sound and water waves. In geology, it is important in the study of seismic waves.
How is reflection used in geology?
In acoustics, reflection causes echoes and is used in sonar. In geology, it is important in the study of seismic waves. Reflection is observed with surface waves in bodies of water. ... Reflection of VHF and higher frequencies is important for radio transmission and for radar.
What is an example of a reflection?
The definition of a reflection is a thought or writing about something, particular in the past, or what one sees when looking into a mirror or body of water. ... An example of reflection is what a girl sees in the mirror when she puts on her makeup .
What is seismic reflection and refraction?
A seismic refraction or seismic reflection line is a set of seismographs usually lined up along the earth’s surface to record seismic waves generated by an explosion for the purpose of recording reflections and refractions of these waves from velocity discontinuities within the earth.
What is seismic reflection method?
Seismic reflection is a method of exploration geophysics that provides information about the sub-surface structure of the seafloor . ... These reflected energy waves are recorded by hydrophones, and the data are processed to produce a visual representation of the seabed sub-surface.
What are the three types of reflection?
Reflection is divided into three types: diffuse, specular, and glossy .
What are the 3 laws of reflection?
The incident ray, the normal and the reflected ray are all in the same plane . ... Again the incident ray, the normal line and the reflected ray all lie in the same plane.
What are the types of reflection?
- Reflection-in-action and Reflection-on-action. Two main types of reflection are often referred to – reflection-in-action and reflection-on-action. ...
- Reflection-in-action. This is the reflection that takes place whilst you are involved in the situation, often a patient interaction. ...
- Reflection-on-action.
How do we write a reflection?
- State what you are analysing: a passage, a lecture, an academic article, an experience, etc...)
- Briefly summarize the work.
- Write a thesis statement stating how your subject has affected you.
What is reflection in simple words?
1 : the return of light or sound waves from a surface . 2 : an image produced by or as if by a mirror. 3 : something that brings blame or disgrace It’s a reflection on my honesty. 4 : careful thought After much reflection, I agreed.
Is it true that seismic waves are reflected?
When a wave encounters a change in material properties (seismic velocities and or density) its energy is split into reflected and refracted waves . The amplitude of the reflection depends strongly on the angle that the incidence wave makes with the boundary and the contrast in material properties across the boundary.
What is the difference between reflection and refraction earthquake?
In seismic reflection method the waves travel downward initially and are reflected at some point back to the surface, the overall path being essentially vertical. ... Whereas, in seismic refraction method, principal portion of the wave-path is along the interface between the two layers and hence approximately horizontal .
How are seismic surveys carried?
The seismic testing is carried out by a specially configured truck (called a vibroseis truck) that lowers a plate onto the surface. This plate generates an acoustic sound signal that is transmitted into the earth’s surface which then reflects off the various geological layers.
What is reflection configuration?
Reflection configuration patterns can be divided into three groups: Parallel —including subparallel and divergent. Discontinuous. Prograding—caused by lateral accretion of strata.
How is seismic data collected?
Seismic surveys have become the primary tool of exploration companies in the continental United States, both onshore and offshore. ... The seismic wave travels into the earth, is reflected by subsurface formations , and returns to the surface where it is recorded by receivers called geophones – similar to microphones.
What does seismic refer to?
1 : of, subject to, or caused by an earthquake also : of or relating to an earth vibration caused by something else (such as an explosion or the impact of a meteorite) 2 : of or relating to a vibration on a celestial body (such as the moon) comparable to a seismic event on earth.
