Involuntary movement of the body that can have various causes: cold, surprise, nervousness, anxiety or symptom of a disease
It is called shaking to that involuntary movement of the body or one of its parts, such as the hands, legs, torso, as a result of the sensation of cold, the surprise caused by unexpected news, the nervousness or fear that something caused us or the symptom of any disease or condition. "Mario's tremor could be Parkinson's." "My body trembled when we got to the cold of Tierra del Fuego." "The new Freddy Krueguer movie made us tremble."
Precisely the so-called Parkinson's disease causes in those who suffer from it tremors in their upper and lower limbs, which turn out to be very characteristic of the disease. The death of certain brain cells causes the disease because they are the ones that allow control of movement and body coordination. When they are affected, they cannot satisfactorily fulfill this task and in addition to the tremors, difficulty in walking and moving can be observed.
On the other hand, in the psychic condition known as panic disorder or attack, tremors are one of the most recurrent symptoms that those who suffer from this type of problem usually show. This condition is characterized by the fact that the person who suffers from it suffers a spontaneous fear or terror that invades them, and then, in this attempt to want to escape from that situation, various bodily symptoms are suffered, including tremors or shaking of the body.
Also strong fatigue or tiredness, and the chills that can produce the extreme cold of a place are causes of tremors. However, in these cases, except in Parkinson's, they are body movements that last a short period of time and are not serious. In the case of anxiety disorder, it can be treated with therapy and with some specific medication, while the chill caused by the cold can be mitigated by wrapping up with more clothes.
Also, when similar movement that occurs in anything else it is called a tremor. The trembling of the leaves is typical of the autumn season.
Movement of the planet
Secondly, the shaking of the earth, also called earthquake and earthquake , turns out to be a shaking of the ground that occurs due to the collision of tectonic plates and the release of energy in the process of what would be a violent reorganization of materials in the earth's crust in search of balance. For example, the concept is also used repeatedly as a synonym for earthquake.
The most recurrent thing is that the earthquake of the earth occurs as a consequence of this release of energy, although there are also other causes such as: volcanic processes, slope movements or cavity subsidence.
That point inside the planet where the earthquake takes place is known as the seismic focus or hypocenter, whereas, the point of the surface that is in the vertical of the hypocenter (located perpendicular to this) is known with the term of epicenter; Many times we have heard that the epicenter of the earthquake was this or that to account for the place in which it was unleashed with a greater intensity of seismic waves.
The tremors propagate through elastic waves from the hypocenter. Meanwhile, there are three main types of seismic waves: primary waves or longitudinal waves (propagate in the same direction as the vibration of the particles), the secondary waves or transverse waves (they propagate perpendicular to the sense of vibration of the particles) and surface waves (They develop on the earth's surface as a result of the interaction between primary and secondary waves).
Earthquakes or tremors will always imply the sudden movement of a part of the earth. If the earthquake is intense, it can cause great destruction in its wake, both of buildings and infrastructure, not to mention the fatalities and injuries that it can generate in the violent destruction that they normally produce.
There are also minor tremors, which occur in areas of the planet prone to movements and in which fortunately it is only a movement that is perceived of course and that can break an ornament but not cause deaths and massive destruction of buildings.
The Richter seismological scale It is a logarithmic scale that assigns a number to each earthquake in order to quantify its severity and impact.
