Answer:
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Explanation:
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Volcanoes play an important role in creating land since they are the sources of magma, which once above ground normally cools to create new land. In the ocean, this land normally forms at divergent and convergent boundaries or hot spots. At divergent boundaries (where two plates move apart), magma constantly erupts along a trench deep below the ocean's surface. This magma rarely piles upward and instead is pushed to both sides of the trench. This is how new seafloor forms. Convergent boundaries can create island arcs like Indonesia as magma erupts bit by bit. Hot spots occur in the middle of plates. They are instances where the mantle pierces through the crust and begins to erupt directly onto to seafloor. Over time, these eruptions will pile up and create underwater volcanoes until they potentially make it above sea level, thereby forming an island. This is how Hawaii was and continues to be formed.
Answer:
The perimeter of the triangle is 2+√2
Explanation:
Since one of the angles of the triangle is 90°, the triangle in question is a right angled triangle.
Since two angles of the triangle are also equal, then two of the its sides will be equal.
Let the opposite and the adjacent sides of the triangle be 1. To get the hypotenuse side, we will apply the Pythagoras theorem which States;
Hypotenuse² = Adjacent²+opposite²
Hyp² = 1²+1²
Hyp = √1²+1²
Hyp = √2
The third side of the triangle is √2.
The perimeter of the triangle will be the sum of all its sides i.e 1+1+√2
= 2+√2
The perimeter of the triangle will be 2+√2
Answer:
195 countries
Explanation:
There are 195 countries in the world today. This total comprises 193 countries that are member states of the United Nations and 2 countries that are non-member observer states: the Holy See and the State of Palestine.
