# Readers ask: How To Build A Seismograph At Home?

## How do you make a homemade seismograph?

Materials

1. Medium-sized cardboard box.
2. Paper or plastic disposable cup.
3. String.
4. Marker.
5. Scissors (have an adult help cut the cardboard and cup if needed)
6. Paper or a very long printed receipt from a store.
7. Tape.
8. Coins, marbles, small rocks or other small, heavy objects to use as weights.

## How are seismographs made?

Most seismographs today are electronic, but a basic seismograph is made of a drum with paper on it, a bar or spring with a hinge at one or both ends, a weight, and a pen. As the drum and paper shake next to the pen, the pen makes squiggly lines on the paper, creating a record of the earthquake.

## How much do seismometers cost?

A typical station, like the one at Kent, costs about \$30,000 (a good seismometer can cost from \$13,000 to \$20,000, Kim said). With Kent finished and online, the seismologists will now start analyzing all the data. You can keep track of the ongoing earthquake monitoring at the network’s website.

## What is the minimum number of seismograph?

To find an earthquake epicenter you need at least three seismographs. Find the distance from each seismograph to the earthquake epicenter. The interception of the three circles is the epicenter.

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## Can a seismograph predict earthquakes?

Seismograms record earthquake strength. Scientists can use them to determine the distance to an earthquake. Using at least three seismograms, they can locate the earthquake’s epicenter. So far no one has found a way to predict earthquakes.

## What is the atomic bomb equivalent to a 7.0 earthquake?

More examples

Approximate Richter Magnitude number Seismic energy equivalent: Amount of TNT
7.0 32 megatons
7.1 50 megatons
7.5 178 megatons
7.8 600 megatons

## Where do most earthquakes occur?

Where do earthquakes occur?

• The world’s greatest earthquake belt, the circum-Pacific seismic belt, is found along the rim of the Pacific Ocean, where about 81 percent of our planet’s largest earthquakes occur.
• The Alpide earthquake belt extends from Java to Sumatra through the Himalayas, the Mediterranean, and out into the Atlantic.

## Are seismographs still used today?

Seismographs are instruments used to measure seismic waves produced by earthquakes. Scientists use these measurements to learn more about earthquakes. While the first seismograph was made in ancient China, today’s modern instruments are based on a simple design first created in the 1700s.

## What does your family do to prepare for earthquakes?

Conduct Earthquake: Duck, Cover & Hold drills every six months with your family. Know the safest place in each room because it will be difficult to move from one room to an- other during a quake. Locate the shutoff valves for water, gas and electricity. Learn how to shut off the valves be- fore a quake.

## What does a seismometer do?

Seismographs are instruments used to record the motion of the ground during an earthquake. They are installed in the ground throughout the world and operated as part of a seismographic network.

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## What does a seismologist do?

Research seismologists study the internal structure of the Earth and try to determine factors that contribute to or foretell an earthquake. They publish their findings in scientific journals or present them at academic forumsâ€”or do both.

## What is the fewest number of seismograph stations?

Answer Expert Verified. At least three seismograph stations are needed to locate the epicenter of a earthquake. Further Explanation: An earthquake occurs when two region of the earth slip past each other.

## Which waves will arrive at a seismograph first?

The P wave is designated the primary preliminary wave because it is the first to arrive at a seismic station after an earthquake. It travels at a speed usually less than 6 kilometers per second in the Earth’s crust and jumps to 13 kilometers per second through the core.

## Where are seismographs kept?

A seismograph is an instrument for measuring earthquake (seismic) waves. They are held in a very solid position, either on the bedrock or on a concrete base.