Lesson 3 Earth and Earth System.pptx

Review 1. Our Solar System is located in what galaxy? Milky Way 2. How old is our Solar System? 4.6 Billion Years 3. What are the inner planets or terrestrial planets? Mercury, Venus, Earth and Mars 4. What...

Review 1. Our Solar System is located in what galaxy? Milky Way 2. How old is our Solar System? 4.6 Billion Years 3. What are the inner planets or terrestrial planets? Mercury, Venus, Earth and Mars 4. What are the outer planets or gas giants or jovian planets? Jupiter, Saturn, Uranus and Neptune 5. It is at the center of the solar system. Sun 6. Enumerate the 8 planets in order from the sun. Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune Earth and Earth System What makes the EARTH unique? Objective: Recognize the uniqueness of Earth, being the only planet in the solar system with properties necessary to support life. (S11/12ES -Ia- e-3) A comprehensive term used for all sciences related to earth geology, meteorology, oceanography etc. Eart h Characterized by its blue waters, rocky brown and green land masses with white clouds against a black background The third planet from the Sun The fifth largest planet in our solar system 70% water, 30% Earth Systems Four Major Systems of the Earth: 1. Air Atmosphere 2. Water Hydrosphere 3. Land Geosphere 4. Life Biosphere Atmosphere Includes air, precipitation, clouds and aerosols It contains mixture of gases such as oxygen, nitrogen, argon, carbon  Parts of the Atmosphere 1. Troposphere starts at the Earth’s surface and extends 8 to 14.5 kilometers high almost all weather types are in this region 2. Stratosphere above the troposphere, it extends up to 50 kilometers high it is in this region where we can find the ozone layer which absorbs and scatters the solar ultraviolet radiation 3. Mesosphere above the stratosphere, it extends to 85 kilometer meteors usually burn up this region  Parts of the Atmosphere 4. Thermosphere above the mesosphere, it extends up to 600 kilometers above the mesosphere it is where aurora and satellite occur 5. Ionosphere abundant layers of electron, ionized atoms and molecules occur it extends from about 48 kilometers above the surface to the edge of the space up to 965 km this region grows and shrinks depending on a solar conditions Parts of the Atmosphere 6. Exosphere the upper limit of our atmosphere it extends from the top of the thermosphere up to 10,000 kilometers A view of Earth's troposphere from an airplane. The Aurora Borealis seen in Alaska. The region where atoms and molecules escape into space is referred to as the exosphere.  Hydrosphere Composed of all the waters on or near Earth surface (example: oceans, rivers, lakes, wells and aquifers) Can be in the form of liquid, vapor (clouds & fogs), and ice (glaciers, ice caps, and icebergs) The frozen part is called Cryosphere 97% of the Earth’s water is in the form of oceans (salty) and 3% is fresh water (non-salty) Layers of the Ocean Geosphere Makes up the solid portion of the Earth, its structure and land Came from the Latin name “Geo” which means ground Parts of the Geosphere a) Crust b) Upper Mantle c) Lower Mantle d) Outer Core e) Inner Core  Biosphere Termed as the “zone of life”, part of the Earth where life exist Measures about 20 kilometers from the top to the bottom It existed for about 3.5 billion Are the four sphere connected to each other? Why? The spheres are so closely connected that a change in one sphere often results in a change in one or more of the other spheres.