Unit 9, Topic 1: Life on Earth Vocabulary

Front

inhabitable

Back

suitable to live in; habitable

Front

uninhabitable

Back

unsuitable for living in

Front

solar system

Back

a group of planets and other bodies that revolve around a star

Front

planet

Back

a large celestial body that revolves around a star in a fixed orbit, reflecting light from that star

Front

life

Back

any system capable of performing functions such as eating, metabolizing, excreting, breathing, moving, growing, reproducing, and responding to external stimuli

Front

biosphere

Back

the regions of the earth occupied by living things

Front

hydrosphere

Back

the regions on the surface of the earth that contain water such as lakes, seas, and rivers

Front

lithosphere / geosphere

Back

the earth itself including rocks, minerals, and landforms of the surface and interior

Front

atmosphere

Back

the gases surrounding earth, or another planet

Front

sphere

Back

a layer or system that makes up part of the earth