The Solar System Posttest

the collection of planets and other bodies that orbit the sun

• orbit

• solar system

• rotation

move in an elliptical path like the planets around the sun

• orbit

• rotation

• solar system

a complete spin on an axis

• orbit

• rotation

• circle

a body that orbits a star

• moon

• planet

• sun

a ball of gas that is held together by gravity and that gives off light energy

• earth

• moon

• star

As a planet follows its orbit, it completes a/an________.

• rotation

• orbit

• revolution

________ are large rock fragments that orbit the sun in a group called the asteroid belt.

• Asteroids

• Comets

• Planets

________ are bodies that orbit the sun in large elliptical paths; are made mostly of rock, ice, frozen gases, and dust particles; the develop tails as they travel.

• Astreroids

• Comets

• Rings

________ is the study of of objects outside the earths atmosphere.

• Astronomy

• Space science

• Planet science

A group of many stars and other bodies is a/an________.

• solar system

• galaxy

• asteroid belt