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What among the following is FALSE about the Richter scale? A. It was developed by Charles Richter and Gutengberg in 1935. B. It is a logarithmic scale C. It can be measured using a seismometer D. Magnitude of 8-9 on a Richter scale means it is a micro earthquake.
An earthquake of magnitude 6 on Richter scale has ______________ times more destructive energy than an earthquake of magnitude 4.
Consider the following statements relating to Richter scale: 1. It was devised in 1935 by Charles F. Richter 2. It describes the quantity of energy released by a single earthquake 3. Richter Scale has no upper limit Which of the statements given above is/are correct?
Simplify the value of $$\frac{{{\text{0}}{\text{.9}} \times {\text{0}}{\text{.9}} \times {\text{0}}{\text{.9 + 0}}{\text{.2}} \times {\text{0}}{\text{.2}} \times {\text{0}}{\text{.2 + 0}}{\text{.3}} \times {\text{0}}{\text{.3}} \times {\text{0}}{\text{.3}} - {\text{3}} \times 0.9 \times {\text{0}}{\text{.2}} \times {\text{0}}{\text{.3}}}}{{{\text{0}}{\text{.9}} \times {\text{0}}{\text{.9 + 0}}{\text{.2}} \times {\text{0}}{\text{.2 + 0}}{\text{.3}} \times {\text{0}}{\text{.3}} - 0.9 \times {\text{0}}{\text{.2}} - {\text{0}}{\text{.2}} \times {\text{0}}{\text{.3}} - 0.3 \times 0.9}} = ?$$
Which of the following statements is/are NOT true with reference to the measurement of earthquakes?  Statements:  I. The Mercalli scale measures the intensity of earthquakes on levels ranging from 1 to 9. II. The Richter scale assigns a numerical value to quantify energy released during an earthquake. III. The Moment magnitude scale is used to determine the size of an earthquake.
$$\frac{{38 \times 38 \times 38 + 34 \times 34 \times 34 + 28 \times 28 \times 28 - 38 \times 34 \times 84}}{{38 \times 38 + 34 \times 34 + 28 \times 28 - 38 \times 34 - 34 \times 28 - 38 \times 28}}$$            is equal to = ?
The magnitude of the earthquake is measured on Richter scale. Which value or above on Richter scale can cause damage from falling things?
Earthquakes which are destructive are those whose magnitude on the Richter scale is
Which of the following is/are matched correctly?
1. Earthquake's origin - seismic focus
2. Epicentre - point on earth's surface directly above seismic focus
3. S waves - similar to sound waves
4. Richter scale - severity of earthquake
With reference to an earthquake consider the following statements. 1. The point where the energy of an earthquake is released is called the hypocentre. 2. The point on the surface, nearest to the focus of the earthquake, is called epicentre. 3. Epicentre is a point directly below the focus of an earthquake. Which of the statements given above is / are correct?