Supercontinents 101: Pannotia, Gondwana, and Pangea - Earth.com
WEBThe three most recent supercontinents were Pangea, Gondwana, and Pannotia. Geologists think there were other supercontinents before these three. We call them Nuna (or Columbia), Rodinia, and Ur. One definition of a supercontinent is a single landmass that contains at least 75% of all land on Earth.
Earth's Magnetic Field: Origin, Structure, and Impact on Humanity
WEBEarth’s magnetic field, also known as the geomagnetic field, is a powerful, vital phenomenon that extends from the interior of the Earth into outer space, where it interacts with the solar wind, a stream of charged particles emanating from the Sun.. This magnetic field serves as a protective shield against solar radiation and plays a crucial role in many of Earth’s life-sustaining systems.
A Beginner's Guide to Tree Identification - Earth.com
WEBLearning tree identification is the first step in appreciating this incredible group of woody plants that impact our lives so profoundly. Once you learn to call a tree by name, you will begin to notice more and more features and facts about that type of tree. Eucalyptus trees have interesting branching patterns and bark.
What is Environmental Science? - Earth.com
WEBEnvironmental science is a science that contains a wide range of scientific disciplines. These disciplines are grouped together based on the natural environment which they encompass and interact with. These sciences include physical, chemical, and biological components. Environmental science provides an interdisciplinary approach to the study ...
What Are Natural Resources and How Do We Use Them?
WEBThese raw materials, such as lumber, metals, food, and water are “natural resources.”. Humans have built the world’s economy upon the use, and many times exploitation, of these resources. To understand natural resources, it is helpful to break them into categories. The two most broad categories are renewable and non-renewable resources.
What is Hadean Eon? - Earth.com
WEBThe Hadean. It is the unofficial geological period of time that lies just before the Archean time period. The Hadean began with the formation of the Earth roughly 4.5 billion years ago (Ga) and ended about 3.8 Ga; the latter date varies according to different sources. Hadean is derived from Hades, Greek for underworld, referring to the hellish ...
A Beginner's Guide to Types of Rock: Igneous, Sedimentary, and ...
WEBSediments can be incredibly small or as large as boulders. The size of the sediment granules determines the resulting sedimentary rock. Sediment types in order from smallest to largest are clay, silt, sand, pebble, cobble, and boulder. These ‘boulders’ are anything over 25cm, or about one foot.
What Is Aluminum? - Earth.com
WEBAluminum. (or aluminium) is a soft, lightweight, silvery metal. It is an element in the boron group on the periodic table of elements, with the symbol Al and atomic number 13. On the earth’s crust, aluminium is the most abundant metal, and the third most abundant of all elements on the earth’s crust, after oxygen and silicon. It accounts ...
What is Haze? - Earth.com
WEBEarth.com staff writer. Haze is an atmospheric phenomenon where dust, smoke, and dry particles in the air obscure the sky’s clarity. When seen from afar, and depending upon the direction of view, haze can have a bluish or brownish tint. Various activities such as farming, vehicle traffic, and wildfires can create a pollutant-clouded atmosphere.
Earth.com -- Earth News, Earth Images, Earth Videos
WEBSpiral galaxy NGC 1559 is a loner in outer space. 09-29-2024. Dwarf galaxy I Zwicky 18 has a youthful appearance. 09-28-2024. The ice giant Uranus in stunning detail. 09-27-2024. NGC 604 is home to hundreds of hot, massive stars. At Earth.com, our goal is to provide the internet with a homepage for anything and everything about our planet Earth ...