The center of the earth is called the core.
It's toward the center of the Earth. We call that direction "down".
The imaginary line passing through the center of the Earth between the North and South Poles, around which the Earth rotates, is called the Earth's axis.
The center of a seismic wave is called the focus or hypocenter. This is the point within the Earth where the seismic waves originate.
You answer a call in a call center just the way management tells you to. Each call center service has its own requirements for how a call is to be answered.
There is no specific Tagalog translation of call center. call: tawag center: sentro
the center of the earth
The core is in the center of the Earth.
The center of the earth is the inner core.
The geometric center and the center of mass of the Earth are essentially the same point.
The direction of the gravitational field in your classroom is towards the center of the Earth, which is typically vertically downwards.
Any circle on the Earth's surface whose center is at the center of the Earth is called a "great circle". Any circle with its center anywhere else is called a "small circle". Spiritually, many consider the kaaba (Mecca) to be the center of the Earth's surface.