Which of the following reference points are used for locating places on the Earth?

• The poles

• Equator

• Prime Meridian

• All of these

The Earth’s grid system was first suggested by?

• Aristotle

• Hipparchus

• Eratosthenes

• Copernicus

What are the vertical lines running across the north-south direction called?

• Latitudes

• Longitudes

• Poles

• None of these

The horizontal lines running across the east-west direction are called _____

The lines of latitude and longitude are a set of imaginary lines.

• True

• False

There can only be one set of grid coordinates for a particular place.

• True

• False

Hipparchus was the first person to make a good approximation of the size of the Earth by calculating a tentative value for the circumference of the Earth.

• True

• False

Answer explanation

Eratosthenes was the first person to make a good approximation of the size of the Earth by calculating a tentative value for the circumference of the Earth.

Eratosthenes was the first to construct the theory of the Earth’s axis.

• True

• False

The lines of latitude are also called the parallels of latitude since they run parallel to the Equator.

• True

• False

The ____________ were the first to propose the grid system of latitudes and longitudes.