Astronomy Vocab Flashcard 1-16

Front

The Earth Itself

Back

geosphere

Front

Imaginary line through a planet from top to bottom

Back

axis

Front

A day in spring and autumn when days and nights are equal.

Back

equinox

Front

Gases surrounding Earth

Back

atmosphere

Front

Object in the solar system made of ice, dust, and gas; has a tail, coma, and nucleus.

Back

comet

Front

All living things on Earth

Back

biosphere

Front

Tipping of Earth on its axis causes seasons

Back

axial tilt

Front

Theory for universe formation

Back

Big Bang

Front

Moon phase with < half the face lighted

Back

crescent

Front

About outer space

Back

celestial