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Earth as a System. In the past, Earth Science was broken up into individual areas BiologyLife GeologyEarth (Rocks) OceanographyOceans MeteorologyWeather.

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Presentation on theme: "Earth as a System. In the past, Earth Science was broken up into individual areas BiologyLife GeologyEarth (Rocks) OceanographyOceans MeteorologyWeather."— Presentation transcript:

1 Earth as a System

2 In the past, Earth Science was broken up into individual areas BiologyLife GeologyEarth (Rocks) OceanographyOceans MeteorologyWeather VulcanologyVolcanoes

3 Scientists realized that no area is in isolation. Instead, they interact in a complex system

4

5 Humans can pollute the atmosphere and the oceans

6 Volcanoes can throw ash miles into the air

7 Sea-floor vents have become homes for ocean life

8 Earth System Science All of these separate areas interact Earth cannot be looked at as different parts How do they interact? We need to create a model of the Earths Systems We need: Technology Satellites Computers Submarines

9 Systems vs. Models System: A piece of the Universe that can be studied separately from everywhere else. Models are the way we describe a system. Models can be used to predict the past and future of systems.

10 Open vs. Closed Systems There are two types of systems: Closed Open

11 Closed Systems Energy may enter, but mass must remain constant Examples: Closed Jars Submarines

12 Open Systems Open systems may exchange both energy and matter Examples: Boiling water Islands

13 Systems Open Closed Refrigerator City Classroom Light bulb Oceans Earth

14 Earth is a (essentially) a closed system Energy enters as light from the sun and stars Energy leaves as heat and light Matter enters as meteors Matter leaves as Hydrogen atoms, satellites, rockets

15 Earth System Science is studied: 1. As individual and isolated parts 2. As a complex system involving many interactions

16 A system is… 1. A piece of the Universe that can be studied separately from everywhere else. 2. The way we describe a complex interaction.

17 A model is… 1. A piece of the Universe that can be studied separately from everywhere else. 2. The way we describe a complex interaction.

18 A closed system means that… 1. Energy may enter and leave, but mass must remain constant 2. Both energy and mass can enter and leave

19 An open system means that… 1. Energy may enter and leave, but mass must remain constant 2. Both energy and mass can enter and leave

20 Your body is a(n) ________ system. 1. Open 2. Closed


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