Global positioning system. GPS is a network of satellites that can plot the position of a receiver on Earth by triangulation. Generally speaking it takes 4 […]
The Mauna Loa volcano on Hawaii Wolf and Nyamuragira are examples of shield volcanoes on Earth. Shield volcanoes are one type of volcano. These volcanoes are […]
There are several theories for how the Grand Canyon was formed One theory is the standard uniformterrianism theory. The theory starts with a the hypothesis of […]
An eclipse is an occultation. An occultation is when three bodies align so that the middle one passes over the most distant one from the perspective […]