Question

chapter 6.1 properties of planet earth

1. how did ancient humans determine earths shape?

Explanation:

Ancient humans observed lunar eclipses (the Earth's shadow on the Moon was curved), ships disappearing over the horizon (the hull first, then the sails), and the changing constellations visible as they traveled north - south. These observations led them to conclude the Earth was spherical.

Answer:

Ancient humans determined Earth's shape through observations such as lunar eclipses (curved shadow), ships disappearing over the horizon (hull first), and changing constellations with north - south travel.