An axis is an invisible line about which an object rotates, or spins. Grades : 5 - 8, Subjects : Earth Science, Astronomy, Physics
Grades and GMAT Scores Earning a bachelor's degree with a 4.0 GPA is an achievement. But not... in education had been positive. Two-thirds of graduates reported moving up at least one job...
Grades : 9 - 12+, Subjects : Earth Science, Meteorology, Geography, Physical Geography
Grades : 4 - 12+, Subjects : Biology, Ecology, Earth Science, Meteorology, Geography, Human Geography, Physical Geography
Carthage was an ancient Phoenician city located on the northern coast of Africa. Its name means “new city” or “new town.” Before the rise of ancient Rome, Carthage was the most powerful city in the region because of its proximity to trade routes and its impressive harbor on the Mediterranean. At the height of its power, Carthage was the center of the Phoenician trade network. It eventually became the richest city in the entire Mediterranean region. It was full of extremely wealthy people and boasted a harbor containing over 200 docks. ...
Grades : 5 - 8, Subjects : Biology, Ecology, Conservation, Earth Science, Oceanography
In 1922, the National Geographic Society adopted the Van der Grinten projection, which depicts the globe by projecting it in a circle rather than a rectangle (as in the well-known Mercator projection) or an ellipse, common in other projections. The Van der Grinten projection was used by National Geographic until 1988. Many popular online map services like Google Maps and ArcGIS Onlin ...
Samuel Ivande is a 2019 National Geographic Explorer, Conservation Ecologist, Bird Conservation Coordinator at the Indianapolis Zoo, and Lecturer at the University of Jos in Nigeria and the A.P. Leventis Ornithological Research Institute (APLORI) – West Africa’s foremost Ornithology and biodiversity conservation training Institute. Learn more about Samuel and his work. Transcript · [Narrator] Birds are beautiful and colorful, and their unique ability of flight makes them a conspicuous part of our environment. Most birds feed on insects and ...
Grades : 2 - 8, Subjects : Geography, Human Geography
The greenhouse effect happens when certain gases, which are known as greenhouse gases, accumulate in Earth’s atmosphere. Greenhouse gases include carbon dioxide (CO 2), methane (CH4), nitrous oxide (N 2O), ozone (O3), and fluorinated gases. Greenhouse gases allow the sun’s light to shine onto Earth’s surface, and then the gases, such as ozone, trap the heat that reflects back from the surface inside Earth’s atmosphere. The gases act like the glass walls of a greenhouse—thus the name, greenhouse gas ...