The Earth and Its Subsystems
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• study of Earth, Earth’s interior, Rocks and Soil, Atmosphere, Oceans, and its neighbors in space • an exciting science with many interesting and practical applications
Earth Science
• the systematic study of inorganic world, as distinct from the study of the organic world, which is the province of biological science. • is ordinarily thought of as consisting of four broad areas: Astronomy, Physics, Chemistry, and Earth Science.
Physical Science
• observe phenomena and compile data to find solutions to problems and the answer to questions that are also of interest to researchers in other physical science. • who specialize in climatology share many ideas and information with Atmospheric Physics. • bring distinctive points of view to scientific study • are concerned with the processes that affect Earth’s Physical Environments at scales from Global to Regional to Local • with this we can better understand our planet’s physical geography • we can also appreciate the importance of viewing Earth as a constantly functioning system.
Physical Geographers
• study some of the same elements and compounds analyzed by Chemists.
Soil Geographers
• are concerned about environments that support the same plants and animals that are classified
Biogeographers
• describe different kinds of interaction and important aspects of how we as self-aware beings perceive reality
Holistic Perspective
• a historical perspective focuses on the Temporal dimension of human experience (time and chronology), while geography is concerned with the Spatial dimension of human experience (space and place). • understanding spatial patterns and processes is essential to appreciating how people live on Earth.
Spatial Perspective
• any entity that consists of interrelated parts or components.
System
• relies on the interactions among a vast combination of factors that enable it to support life • continually responding to changes
Earth System
• the individual components of a system • change by interacting with one another as parts of a functioning unit • a change in one aspect of the earth’s system affects certain other parts
Variables
• are functioning units of a major system that demonstrate strong internal connections
Subsystems
Earth’s Major Subsystems (4)
• Atmosphere • Hydrosphere • Lithosphere • Biosphere
• is the gaseous blanket of air that envelops, shields, and insulates Earth • variations in atmospheric components and processes create the changing conditions (Weather and Climate)
Atmosphere
• the total amount of water on our planet that includes the water that is on the surface of the planet, underground, and in the air • can be liquid, vapor, or ice • exists on the surface of ocean, lakes, and rivers
Hydrosphere
• the solid, outer part of the earth, including the brittle upper portion of the mantle and crust such as the landforms, rocks, soils, and minerals
Lithosphere
• the regions of the surface, atmosphere, and hydrosphere of the Earth occupied by living organisms such as people, other animals, and plants
Biosphere
-these major subsystem and the interactions among them nurture the conditions ______
Necessary for Life
• The ____ and _____ of interactions within and between Earth’s subsystem are ___ equal everywhere. This inequality leads to our Planet’s ____ ____ and produces the wide….
Impact, Intensity Not Environmental Diversity
• The Earth’s System is ___
Dynamic
• We can directly observe some of these changes in Earth’s System (5)
• Seasons • Ocean tides • Earthquakes • Floods • Volcanic eruptions
• other environmental changes may take years or more than a lifetime to accumulate enough modification so that humans can recognize their impact
Long-term changes
• Changes on Earth may be (3)
• Naturally Cause • Human Induced • Combination
• centers on the increasing impact that human activities are exerting on Earth’s Natural System
Global Warming
• our surrounding • including all physical, social, and cultural aspects and ways of living • are systems composed of a wide variety of elements and processes that involve interconnections among weather, climate, soils, rocks, terrain, plants, animals, water, and human.
Environment