Answer:
Option (4)
Explanation:
Seismic P and S waves are generated during an earthquake that has the potential to propagate through the interior of the earth. P waves are also known as the primary waves and they move in a compression and extension way in their direction of propagation. S waves are shear waves. This P waves travel faster than the S waves and can travel in both solid as well as in liquid. Whereas the S wave can travel only through solids. They get absorbed when they reach the core-mantle boundary. These two waves are helpful in determining the epicenter of an earthquake by recording the arrival of these waves.
Hence, the correct answer is option (4).
Finland has the most islands, with an estimated total 221,800.
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Answer:
d) cutting a larger crystal along four perfect cleavage planes, forming a cleavage fragment.
Explanation:
Fluorite Octahedron crystals are formed narutally, <em>but it's not common,</em> they can be found more commonly as cubes,<em> the majority of fluorite octahedron are formed when miners cit them along its natural cleave lines. </em>
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