# Short-Questions

Fast solutions for complex problems

21

## What is a dense ball of solid iron and nickel?

inner core
The inner core is a solid iron-nickel ball surrounded by a liquid outer core, also made of iron and nickel.

### What is the sphere of solid nickel and iron at the center of earth surrounded by the liquid outer core?

The solid, outer layer is called the crust. Below the crust lies a layer of very hot, almost solid rock called the mantle. Beneath the mantle lies the core. The outer core is a liquid mix of iron and nickel, but the inner core is solid metal.

What is the thickest layer?

Crust
The Earth is made up of 3 layers. The Crust is the thickest layer. The Inner Core is solid.

What would happen if we drilled to the Earth’s core?

Your ‘down’ trip would have gravity increasing your speed every second as you are pulled towards the core, propelling your way through Earth until you reached the center. Once there, gravity would begin acting as a buffer against you, making your ‘up’ trip increasingly slower.

## What happens if Earth’s core cools?

When the molten outer core cools and becomes solid, a very long time in the future, the Earth’s magnetic field will disappear. When that happens, compasses will stop pointing north, birds will not know where to fly when they migrate, and the Earth’s atmosphere will disappear.

### What is the thinnest layer on Earth?

Inner core
*Inner core It is the thinnest layer of the Earth. *The crust is 5-35km thick beneath the land and 1-8km thick beneath the oceans.

What are the 7 layers of Earth?

If we subdivide the Earth based on rheology, we see the lithosphere, asthenosphere, mesosphere, outer core, and inner core. However, if we differentiate the layers based on chemical variations, we lump the layers into crust, mantle, outer core, and inner core.

Why can’t you dig to the center of the Earth?

Because of the Coriolis Effect. The surface of Earth is constantly spinning at more than 1,000 miles per hour. If you go deeper into the Earth, it’s still moving all around you, but the mass inside doesn’t have as far to travel. The only way to make it work, would be to dig the hole straight through Earth’s poles.