SOLAR SYSTEM

Previous
Next

UNIVERSE

PLANETARY INTERIORS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The core is the deepest and hottest layer of the Earth. It is made almost entirely of metal. The core is made of two layers:the outer core, and the inner core. The inner core is made mostly of iron. The iron core is extremely hot-between 5, 000 and 7, 000 degrees Celsius and
A
rises up through the other layers of Earth to become the magma of volcanoes.
B
fluctuates between solid and liquid, depending on the temperature.
C
the pressure there is so great that it cannot melt and it is solid.
D
is a molten mass of magma, much like the mantle.
Explanation: 

Detailed explanation-1: -The Core is predominantly composed of iron and nickel. Even after 4.5 billion years of cooling, the Earth’s core remains very hot. The Earth’s core is divided into two layers, a solid inner core, and a liquid outer core. The Inner Core (D) (1216 km) is solid nickle-iron alloy.

Detailed explanation-2: -Starting at the center, Earth is composed of four distinct layers. They are, from deepest to shallowest, the inner core, the outer core, the mantle and the crust.

Detailed explanation-3: -Outer Core The core of the Earth is like a ball of very hot metals. (4000 degrees F. to 9000 degrees F.) The outer core is so hot that the metals in it are all in the liquid state. The outer core is located about 1800 milesbeneath the crust and is about 1400 miles thick.

Detailed explanation-4: -The interior of Earth is very hot (the temperature of the core reaches more than 5, 000 degrees Celsius) for two main reasons: The heat from when the planet formed, The heat from the decay of radioactive elements.

There is 1 question to complete.
Previous
Next