6th Earth Science Milestone Review #1

Tails of a comet are always directed _____________ from the sun.

The transfer of thermal energy by the circulation or movement of a liquid or gas.

List the outer planets closest to the sun.

Scientist believe that the solar system formed from ...

2 gases in the Earth's atmosphere that absorb heat.

Pluto is now classified as a _____________ planet.

Name the inner planets in order closest to the sun.

A gradual increase in average global temperature.

The inner planets are also referred as __________ planets.

The arrow is pointing to which planet?

Our solar system is considered a _________________ galaxy.

All objects are attracted to each other by the force of ...

Name Earth's Sister planet.  They are alike in terms of size, density, and atmospheres.

Most asteroids revolve around the sun between the orbits of _____ & ______.

The 2 factors that combine to keep Earth and the moon in their orbits are ...

States that breathable air, temperature, and water makes conditions livable (support life).

Movement of heat from a warm object to a cold object is called?

The outer planets are also referred as ________________ planets.

Theory to describe the formation of the universe.

Our solar system is called ...

Saturn's rings are made up mostly of ...

What do all the inner planets have in common?