Question

define ;

a) seismograph

b) tectonic plates

c) Richter scale ​

Answer 1

Answer:

A seismometer is an instrument that responds to ground motions, such as caused by earthquakes, volcanic eruptions, and explosions. Seismometers are usually combined with a timing device and a recording device to form a seismograph.

Answer 2

Answer:

a)an instrument that measures and records details of earthquakes, such as force and duration.

b) Plate tectonics is a scientific theory describing the large-scale motion of seven large plates and the movements of a larger number of smaller plates of Earth's lithosphere, since tectonic processes began on Earth between 3.3 and 3.5 billion years ago.

c) a numerical scale for expressing the magnitude of an earthquake on the basis of seismograph oscillations.