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21 Cards in this Set

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  • Back
system
an organized group of parts that work together to form a whole.
closed system
Both a terrarium and the Earth are closed systems because matter, such as soil or water, cannot enter or leave. Energy like sunlight and heat can flow into or out of the system.
Name the Earth's four connected parts.
atmosphere (Earth's air)
hydrosphere (Earth's water)
biosphere (Earth's living things)
geosphere (Earth's interior and its rocks and soils)
What type of system are the atmosphere, hydrosphere, biosphere, and geosphere?
Open System because both matter and energy move into and out of it. The four open systems work together to form one large, closed system called Earth.
Atmosphere
Made up of gases that surrounds and protects the earth. Nitrogen 78% and Oxygen 21%. Contains carbon dioxide, water vapor, and a few other gases.
Hydrosphere
Made up of all the water on Earth in oceans, lakes, glaciers, rivers, and streams and underground. Water covers 3/4 of the Earth's surface. Only 3% is fresh water. Nearly 70% of fresh water is frozen in glaciers and polar ice caps.
Biosphere
Includes all life on Earth, in the air, on the land, and in the waters.
Geosphere
Includes all the features on Earth's surface--the continents, islands and sea floor--and everything below the surface.
Geosphere's Layers
Crust
Mantle
Outer Core
Inner Core
Crust
thin, rocky shell that includes continents and sea floor
Mantle
thick layer of hot rock
Outer Core
molten metal, mostly iron
Inner Core
solid metal, mostly iron
Atmosphere and modern technology
Scientists launch weather ballons, fly specially equipped planes, an view atmosphere in satellite images to help more accurately predict local weather.
Hydrosphere and modern technology
Scientists have used deep-sea vehicles,special buoys, satellite images, and diving suits to help study the world's oceans. This has helped them learn about how the currents interact with wind patterns and affect Earth's weather.
Biosphere and modern technology
Satellite photos are used to track yearly changes in Earth's plant and animal life.
Geosphere and modern technology
Scientists use satellite images, sound waves, and computer modeling to develop accurate pictures of features on and below Earth's surface.
energy
The ability to do work or to cause a change.
matter
anything that has weight and takes up space. Matter is usually solid, liquid or gas.
planet
a spherical body, usually larger than a comet or an astroid, that orbits the sun or a similar body that orbits a different star.
satellite
an object that orbits a more massive object.