The Spheres of the Earth Notes Everything in Earth's system can be placed into one of four major subsystems: land, water, living things, or air. These four subsystems are called "spheres." Geosphere (geo = Greek word for ground/earth): The geosphere includes the Earth's interior, soil, sand, rocks and minerals, landforms like mountains and the processes that shape the Earth's surface, such as erosion and plate tectonics. Hydrosphere (hydro = Greek word for water): The hydrosphere includes the oceans, seas, glaciers, lakes, groundwater, rivers, and streams. The hydrosphere covers about 70% of the surface of the Earth and is home to many plants and animals. Biosphere (bio = Greek word for life/living things): The biosphere includes all living components of the Earth (humans, plants, animals, bacteria, fungi, protists, and all microscopic organisms on land, in the air and in the oceans). It also includes all organic matter that has not yet decomposed. Atmosphere (atmo = Greek word for air): The atmosphere is the blanket of gases which surrounds Earth. The atmosphere is made of water vapor (quantities vary depending on temperature), 78 % nitrogen, 21% oxygen, 0.9% argon, and 0.03% carbon dioxide. The surface of the geosphere, where the rocky part of our planet is in contact with water, air, and/or life is generally where the spheres intersect and affect each other. Sphere interactions: The processes that move matter and energy from one sphere to another. Examples of sphere interactions: ● ● ● Wind (atmosphere) can carry seeds (biosphere) to new places so more plants can grow. Air temperature (atmosphere) impacts the evaporation of the oceans (hydrosphere). Water (hydrosphere) erodes the land, bringing nutrients to lakes (hydrosphere) Spheres of the Earth Practice 1. The four spheres of the earth are: ____________________ ____________________ ____________________ ____________________ 2. Sort the following into the right sphere: Carbon dioxide, mountains, trees, birds, oceans, nitrogen, rocks, glaciers, sand, grass, humans, clouds, oxygen, lakes, soil, bacteria, rivers, argon Geosphere: Hydrosphere: Atmosphere: Biosphere: 3. Fill in the blanks with the name of the correct sphere and draw your own picture of the sphere in the empty box. 4. What do the following Greek words mean? a. Geo = b. Bio = c. Hydro = d. Atmo = 5. Give your own 2 examples of interactions between the spheres. 1. 2. Esferas de la Tierra Practica 1. Las 4 esferas de la Tierra son: ____________________ ____________________ ____________________ ____________________ 2. Clasifica lo siguiente en la esfera correcta: Dióxido de carbono, montañas, árboles, pájaros, océanos, nitrógeno, rocas, glaciares, arena, hierba, seres humanos, nubes, oxígeno, lagos, suelo, bacterias, ríos, argón. Geosfera: Hidrosfera: Atmosfera: Biosfera: 3. Llena los espacios en blanco con el nombre de la esfera correcta y dibuja tu propia imagen en la caja vacía. 4. Que significan las siguientes palabras? a. Geo = b. Bio = c. Hidro = d. Atmo = 5. Da 2 de tus propios ejemplos de interacciones entre las esferas de la Tierra. 1. 2.