The melting temperature of materials is affected by the pressure they are under. So when "rock" in the Earth's mantle experiences a decrease in confining pressure, not only does it expand, it's melting temperature drops. If the melting temperature of the material drops below the background (also known as the
in-situ
) temperature, then melting will occur and in this case magma will form.
Answer:
Explanation:
Of the five oceans, the one with the greatest average depth is the Pacific, with about 4300 meters.
The reason is that this ocean is located on the great plate of the Pacific whose convergent margins are crossed by deep oceanic trenches under which this plate subducts.
In fact, the greatest ocean depth is also found in this ocean and corresponds to the Challenger Abyss, in the Mariana Trench, which reaches a depth of 11 km.
Answer: C) Square
Explanation:
A cube is a three dimensional square. If you cut one in half it will be a square.
