Earthquakes generate compressional waves (p-waves) and shear waves (s-waves). Compared to the speed of shear waves in a given earth material, the speed of compressional waves is the fastest.
Because of this the compressional waves are the first waves to arrive on a complete record of ground shaking. They are also called P waves, which derives from this fact - P is an abbreviation for primary, first wave to arrive.<span>They typically travel at speeds between ~1 and ~14 km/sec.</span>

8 0

2 years ago

2. Convert the line or linear scale to the

dem82 [27]

A fraction scale is depicts a portion of an object or geographical feature on a map. While a linear scale has equal divisions for equal values.

<h3>What is the fraction scale of 2cm = 30Km?</h3>

1 km = 1000 m, and 1 m = 100 cm.

=> 1 km = 1000 × 100 cm = 100000 cm

=> 10 km = 10 × 100000 cm = 1000000 cm

From the question, 2cm represents 30Km, Hence,

2cm represents 3,000,000 on ground

=> 1 cm represents (3,000,000 / 2) cm on ground

or 1cm represents 1,500,000cm on the ground.

Thus, the The representative fraction of the scale is 1 : 1,500,000.

This means that 1 cm on map represents 1,500,000 cm on ground.

Learn more about linear scales at;
brainly.com/question/19381630
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1 year ago