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OHVA 7th Gr. Ea Scie
Earth Science Unit 1 Lesson 2 Spheres of the Earth
Term | Definition |
---|---|
Atmosphere | The gaseous layer surrounding the earth, made up of the mixture of substances known as AIR; the earth's ATMOSPHERE is made up of many GASSES, including OXYGEN we need to breathe, as well as small liquid and solid particles |
Aurora: | Streamers or BANDS of LIGHT sometimes visible in the night sky in northern or southern regions of the earth; scientists think an aurora is caused by CHARGED PARTICLES from the SUN that enter the earth's magnetic field and stimulate molecules in the atmosp |
Biosphere | The ZONE of LIFE on the earth that includes ALL living things; plants, fungi, and animals are part of the earth's BIOSPHERE |
Hydrosphere | The LIQUID layer of the earth, made up of the earth's WATERS; the OCEANIC parts of they HYDROSPHERE cover about 3/4 of the earth's surface. |
Lithosphere | The ROCKY OUTER layer of the SOLID earth, averaging about 100 km in depth; the LITHOSPHERE includes CONTINENTS, ISLANDS, and the OCEAN FLOOR. |
Magnetosphere | The region in SPACE that is affected by the earth's MAGNETIC FIELD; SOLAR WIND and other particles in SPACE are deflected by the earth's MAGNETOSPHERE |