Question

How do we get accurate measurements of the Earth?

We have tools such as telescopes and satellite images to help calculate measurements of Earth.
We use data recorded by early astronomers to calculate Earth's size.
We use calculations based on the measurements of sailors collected around the world.
We use basic mathematical skills to calculate measurements of Earth.

Answer 1

We use calculations based on the measurements of sailors collected around the world.

Step-by-step explanation:

Accurate measurements of the Earth are obtained through calculations based on the measurements of sailors collected around the world, which is known as Geodesy. Geodesy involves measuring the Earth's size, shape, orientation, and gravitational field through a combination of terrestrial, airborne, and satellite-based techniques. This includes using tools such as GPS, lasers, and radar to measure distances and elevations, as well as calculating changes in the Earth's magnetic field and the position of the stars. These measurements are then used to create detailed models of the Earth's surface and to study its geology, atmosphere, and climate.