Tag: transfer of charge

Questions Related to transfer of charge

Which of the following Earth's plates is responsible for causing an earthquake?

physics structure of earth seismic waves and tsunami causes of earthquakes origin of earth and its internal energy transfer of charge lightning safety

  1. The crust of the earth

  2. The mantle of the earth

  3. The inner core of the earth

  4. The outer core of the earth

Show answer
Correct Option: A
Explanation:

Most earthquakes are tectonic earthquakes, which happen when the large, thin plates of the Earth's crust called tectonic plates become stuck as they move past one another. They lock together, and pressure builds up. When they finally release, earthquakes occur.

Earthquake at two places A and B were measured by a seismograph which recorded the magnitude as 2 and 4. The magnitude of tremors and its destructive energy at A and B can be compared as:

physics structure of earth seismic waves and tsunami causes of earthquakes origin of earth and its internal energy transfer of charge lightning safety

  1. Tremor at B are two times that at place A

  2. Tremor at B are four times that at place A

  3. Tremor at B are 100 times that at place A

  4. Tremor at B are 1000 times that at place A

Show answer
Correct Option: C
Explanation:

As the magnitude records by seismograph at a place is more by 1, the magnitude of tremors will be 10 times more. Hence, the magnitude of tremors at 'B' are 100 times than at place 'A' since they differ by 2 in magnitude.

Name the scale on which the destructive energy of an earthquake is measured.

physics structure of earth seismic waves and tsunami causes of earthquakes origin of earth and its internal energy transfer of charge lightning safety

  1. Temperature scale

  2. Vector scale

  3. Richter scale

  4. Energy scale

Show answer
Correct Option: C
Explanation:

The Richter magnitude scale was developed in 1935 by Charles F. Richter of the California Institute of Technology as a mathematical device to compare the size of earthquakes. The magnitude of an earthquake is determined from the logarithm of the amplitude of waves recorded by seismographs. Adjustments are included in the magnitude formula to compensate for the variation in the distance between the various seismographs and the epicenter of the earthquakes. On the Richter Scale, magnitude is expressed in whole numbers and decimal fractions. For example, a magnitude of 5.3 might be computed for a moderate earthquake, and a strong earthquake might be rated as magnitude 6.3. Because of the logarithmic basis of the scale, each whole number increase in magnitude represents a tenfold increase in measured amplitude; as an estimate of energy, each whole number step in the magnitude scale corresponds to the release of about 31 times more energy than the amount associated with the preceding whole number value.
The Richter scale has the readings from 1 to 10. The reading of magnitude 3 on the Richter scale would be recorded by a seismograph. If the Richter scale gives a reading of magnitude 3, then the earthquake is not likely to cause much damage. Generally, earthquake of magnitudes higher than 7 is considered destructive in nature.

Earthquake at two places A and B were measured by a seismograph which recorded the magnitude as 2 and 4. The magnitude of tremors and its destructive energy at A and B can be compared as under:

physics structure of earth seismic waves and tsunami causes of earthquakes origin of earth and its internal energy transfer of charge lightning safety

  1. Tremor at B is 2 times to that at place A

  2. Tremor at B is 4 times to that at place A

  3. Tremor at B is 100 times to that at place A

  4. Tremor at B is 1000 times to that at place A

Show answer
Correct Option: C
Explanation:

Richter scale is not a linear scale. It is a logarithmic scale. A difference in magnitude of $2$ implies a multiplication factor of $10^2 = 100$.

The first seismograph was invented in

physics structure of earth seismic waves and tsunami causes of earthquakes origin of earth and its internal energy transfer of charge lightning safety

  1. Germany by Albert Einstein.

  2. China by zhang Heng.

  3. Germany by Emmy Noether.

  4. none of the above.

Show answer
Correct Option: B
Explanation:

A Chinese mathematician, named Zhang Heng, inverted and constructed the first seismograph in A.D. 132.

Earthquake at two places A and B were measured by a seismograph which recorded the magnitude as 2 and 4. The magnitude of tremors and its destructive energy at A and B can be compared as under

physics structure of earth seismic waves and tsunami causes of earthquakes origin of earth and its internal energy transfer of charge lightning safety

  1. tremor at B are two times that at place 'A'

  2. tremor at B are four times that at place 'A'

  3. tremor at B are 100 times that at place 'A'

  4. tremor at B are 1000 times that at place 'A'

Show answer
Correct Option: C

The earth shakes when _________ occurs. 

physics structure of earth seismic waves and tsunami causes of earthquakes origin of earth and its internal energy transfer of charge lightning safety

  1. Tsunami

  2. Flood

  3. Earthquake

  4. Drought

Show answer
Correct Option: C
Explanation:

Earthquakes are usually caused when rock underground suddenly breaks along a fault. This sudden release of energy causes the seismic waves that make the ground shake.

State whether the given statement is True or False :

The plates of the outermost layer of the Earth are always in continuous motion. 

physics structure of earth seismic waves and tsunami causes of earthquakes origin of earth and its internal energy transfer of charge lightning safety

  1. True

  2. False

Show answer
Correct Option: A
Explanation:

The outermost layer of the Earth is called as crust. It is not in one piece but fragmented. Each fragment is called as a plate. Such 7-8 major plates are present. Also, there are many minor plates. These plates are in continuous motion. When these plates brush past one another or a plate goes under another, it causes collision. This causes earthquake on the surface of the Earth. Earthquakes occur all the time around the world. But they are too small to be noticed. Major earthquakes are less frequent. Hence, given statement is true.

A Seismograph is a device that is used to measure the:

physics some natural phenomena seismic waves and tsunami causes of earthquakes origin of earth and its internal energy transfer of charge lightning safety

  1. thunderstorm

  2. earthquake

  3. lightining

  4. weather

Show answer
Correct Option: B
Explanation:

A seismograph is a device that measures and records the seismic waves moving through the earth post an earthquake.

What are seismic waves caused by?

physics some natural phenomena seismic waves and tsunami causes of earthquakes origin of earth and its internal energy transfer of charge lightning safety

  1. Volcanoes

  2. Traffic

  3. Earthquakes

  4. Heavy rain

Show answer
Correct Option: C
Explanation:

Seismic waves move through the Earth as the result of earthquakes.