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What is the most massive earthquake on record?
There have been many devastating earthquakes over the years. Some of the worst and most massive earthquakes have been the 1976 Tangshan earthquake that killed between 240,000 and 655,000 people. Another massive one was the 1556 Shaanxi earthquake which killed 830,000 people. The largest earthquake to be measured on a seismograph was the 1960 Chilean Earthquake which was a 9.5 magnitude.
Does a seismograph measure tsunami?
No. The Richter scale is a measure of the energy released at the focus of the earthquake - the point underground where it occurred. A Tsunami is an ocean wave generally caused by a submarine landslide or earthquake. The landslide or earthquake may have a Richter number associated with it, but the landslide itself need not have been caused by an earthquake. For example a slumping at the terminus of an undersea sediment delta. The Tsunami is the movement of the water caused by the volume of the submarine slump. Hence the common observation of the sea level going down, followed some time later by the sea in-rushing again.
What is the difference between a Siesmograph and a siesmogram?
SiesmographEarthquakes generate seismic waves which can be detected with a sensitive instrument called a seismograph. Advances in seismograph technology have increased our understanding of both earthquakes and the Earth itself.Perhaps the earliest seismograph was invented in China A.D. 136 by a m an named Choko.How Do I Read a Seismogram?When you look at a seismogram, there will be wiggly lines all across it. These are all the seismic waves that the seismograph has recorded. Most of these waves were so small that nobody felt them. These tiny microseisms can be caused by heavy traffic near the seismograph, waves hitting a beach, the wind, and any number of other ordinary things that cause some shaking of the seismograph. There may also be some little dots or marks evenly spaced along the paper. These are marks for every minute that the drum of the seismograph has been turning. How far apart these minute marks are will depend on what kind of seismograph you have.Figure 1 - A typical seismogram.So which wiggles are the earthquake? The P wave will be the first wiggle that is bigger than the rest of the little ones (the microseisms). Because P waves are the fastest seismic waves, they will usually be the first ones that your seismograph records. The next set of seismic waves on your seismogram will be the S waves. These are usually bigger than the P waves.Figure 2 - A cross-section of the earth, with earthquake wave paths defined and their shadow-zones highlighted.If there aren't any S waves marked on your seismogram, it probably means the earthquake happened on the other side of the planet. S waves can't travel through the liquid layers of the earth so these waves never made it to your seismograph.The surface waves (Love and Rayleigh waves) are the other, often larger, waves marked on the seismogram. They have a lower frequency, which means that waves (the lines; the ups-and-downs) are more spread out. Surface waves travel a little slower than S waves (which, in turn, are slower than P waves) so they tend to arrive at the seismograph just after the S waves. For shallow earthquakes (earthquakes with a focus near the surface of the earth), the surface waves may be the largest waves recorded by the seismograph. Often they are the only waves recorded a long distance from medium-sized earthquakes.
Can a seismograph measure vertical waves or just horizontal waves?
A seismograph is the output of a seismometer. Seismometers can be oriented to measure vertical, north-south, and east-west motion (or anything in-between if it were so desired). Some modern seismometers include three instruments in a single unit for this purpose.
If you are swimming in the ocean during an earthquake - can you feel the earthquake?
Water will create violent waves and if you continue to swim you might be pushed and flipped around. It might sound fun but it is really dangerous and can cause serious injuries. Trust me! Get out as soon as you can!
A sentence with seismograph in it?
Here are some sentences.Scientists use a seismograph to measure movement in the earth.The seismograph showed that an earthquake had occurred.
When do you feel an earthquake?
You can feel a earthquake when you can feel the floor start to vibrate. You can also feel it because you feel lots of pressure coming down on you,and your body can feel that. Some people even feel a earthquake from a mile away.
What are easy earthquake questions?
Some good questions about earthquakes are:What is an earthquake?How long do earthquakes last?Is there an 'earthquake season' or 'earthquake weather'?Where is the safest place to be in an earthquake?Will the ground open up during an earthquake?What is a seismometer, seismograph, and a seismogram?When was the seismograph invented?What is the Richter Scale?Do many small earthquakes prevent larger earthquakes?Can we predict earthquakes?What is liquefaction?
What is an instrument used to detect and record earthquakes?
There are two instruments, which are basically the same thing. There is the seismograph , and a more specific tool measures the waves on what is called the Richter scale. Earthquakes are given a number from one to ten, ten being the strongest. The strongest earthquake that their ever was, was measured a 9.3.
What is the most massive earthquake on record?
There have been many devastating earthquakes over the years. Some of the worst and most massive earthquakes have been the 1976 Tangshan earthquake that killed between 240,000 and 655,000 people. Another massive one was the 1556 Shaanxi earthquake which killed 830,000 people. The largest earthquake to be measured on a seismograph was the 1960 Chilean Earthquake which was a 9.5 magnitude.
What do they use a Chinese seismograph for?
the chinese used the seismograph the find out the direction of an earthquake. in the first model, there were some small marbles inside a jar. when the earthquake hit, a marble would fall out of the jar, and in the direction of the quake. the chinese belived earthquakes were a sign of future evils.
How are eathquakes detected?
The scientific device used to detect earthquakes is a Seismograph. They're necessary for detecting small earthquakes and for determining their strength. An earthquake that's at least 2.0 on the Richter scale can be felt by some people, and a 3.0 can be felt by most people.
Who uses seismograph?
seismologists
How did people feel about the earthquakes in Japan?
The same way you would feel if your home was destroyed and your friends and family were missing, injured or killed. Some people were really supportive, and some were just plain negative cold hearted. But me personally think its a tragic thing that's happened to them, even though i don't know anyone from there, there are lots of people who's relatives have died in that earthquake following a tsunami following an other earthquake.
Can you feel an earthquake on the first floor everyone i know who is living on the second floor and higher felt the earthquake but i live on the first floor and felt nothing?
Yes, it is possible to not feel an earthquake on the first floor while others on higher floors do feel it. The perception of earthquakes can vary depending on the building's structure, proximity to the epicenter, and personal sensitivity. In some cases, people on the lower floors may not sense smaller tremors as strongly as those on higher floors.
How doe a seismograph work?
A seismometer, sometimes known as a seismograph, in modern day is usually inertial an it has: 1) A weight of some kind, called the inertial mass, that moves inside but stays attached. 2) A recording device for the mass. Basically, the motion in the ground, even very slight, will move this weight and it is the movement of the weight which causes a reading on changes underground. Some modern systems now use electronics. Instead of a writing device for recording, it uses magnetic strips to record information. A seismograph records data from an earthquake with a needle and ink. When an earthquake occurs ts records this data and uses the needle with ink on it to show the highs and lows of the P waves, S waves, and surface waves the earthquake produces. The ink lines are recorded on graph paper showing the number of how high or low the earthquake's strength is and measures the waves.
What are some seismograph names?
Get a job, Hippie
