Earth is divided in Four main Sphere • 4 spheres video 5 min • https: //www. youtube. com/watch? v=5 Foo. HD 0 atuc • Crash course for kids 4 min • https: //www. youtube. com/watch? v=VMxjz. WHby. FM
Earth is divided into 4 main SPHERES
Biosphere -Thin layer of air, land, and water where living things exist. • Includes all living things and their relationships • Ranges from 10 km above sea level (used by birds in flight) to depths of the ocean such as the Puerto Rico trench, at more than 8 kilometres deep.
Geosphere • All of the rocks, minerals and ground found on and in Earth • Includes all mountains on the surface, as well as liquid rock in the mantle below the surface as well as minerals and metals of the outer and inner cores.
Geosphere • Crust: • The thin, outer layer of the earth. • Less than 1% of the Earth's mass. • Made of solid rock, broken into plates. • Mantle: Molten rock on which plates float. Contains 67% of the earth's mass. • Core: Inner layer of the Earth. Made of both solid and liquid metals.
Hydrosphere • Includes all of the rivers, lakes, streams, oceans, groundwater, polar ice caps, glaciers and moisture in the air (like rain and snow). • The hydrosphere is found on the surface of Earth , but also extends down several miles below, as well as several miles up into the atmosphere.
Atmosphere • Includes all the air above the surface of the Earth all the way to space. • The air contains 79% nitrogen, less than 21% oxygen, and a small amount of carbon dioxide and other gases.
How do Earth’s Spheres Interact?
Identify at least two spheres and describe interactions