Space Vocabulary Practice 5th grade

The force of attraction that pulls bodies toward the center of the Earth.

• inertia

• revolution

• gravity

• orbit

The small, rocky planets having a few moons.

• inner planets

• solar system

• milky way

• outer planets

The large, gaseous planets with multiple moon and ring systems.

• inner planets

• solar system

• galaxy

• outer planets

A natural object that orbits a planet.

• comet

• meteor

• star

• moon

The motion of one object around another object (orbit).

• rotation

• revolution

• gravity

• axis

The spinning of an object on its axis.

• orbit

• revolution

• rotation

• eliptical

The Sun, planets, and other objects that orbit the Sun.

• galaxy

• universe

• solar system

• orbit

A mass of hot gas that produces its own light energy.

• moon

• comet

• asteroid

• star

A medium-sized star at the center of our Solar System.

• comet

• Venus

• Earth

• Sun

An imaginary line that a sphere rotates around.

• orbit

• axis

• rotation

• asteroid belt