Term 1 Vocab Weeks 1-2

Front

Big Bang Theory

Back

About 3.7 billion years ago, the universe began with a huge fiery explosion.

Front

Geocentric theory

Back

An astronomical theory that describes Earth as the center of the universe.

Front

Heliocentric Theory

Back

The theory that Earth revolves the Sun.

Front

Universe: all of space and time, including planets, stars, galaxies, and all forms of matter and energy.

Back

all of space and time, including planets, stars, galaxies, and all forms of matter and energy.

Front

Galaxy

Back

Large group of stars, dust, and gas held together by gravity.

Front

Inertia

Back

Resistance of an object to change in position/motion; keeps it in circular path.

Front

Meteoroid

Back

Pieces of space debris (rock and iron) traveling through space.

Front

Meteor: A meteoroid that burns up in Earth’s atmosphere (shooting star)

Back

A meteoroid that burns up in Earth’s atmosphere (Viewed as a shooting star)

Front

Meteorite

Back

A meteoroid that strikes the surface of a moon or planet.

Front

Gravity

Back

The force that pulls all objects to Earth's center.