Venus, the second planet from the Sun, is also known as Earths "twin". Venus was the first planet to ever be reached by a space probe. The Soviet probe, Venera 7 was the first probe to land on Venus in 1970. Currently, the European space agency's Venus Express is orbiting the planet.

Mercury is the closest planet to the Sun and is not easily seen except during twilight hours.

Uranus [yoor-uh-nuh s] is the seventh planet from the Sun. It’s barely visible to the naked eye, and is the first planet discovered with the use of a telescope.

Basic Cell Structure vocabulary for 7th grade science. (12 terms)

This game reviews how the earth surface changes by plate boundary movement.

There are hundreds of thousands of rocky objects orbiting around the sun between Mars and Jupiter.

Definitions and examples of each term

Spin to WIN! Physics is FUN!

Reviews vocabulary for volcanoes and earthquakes

Bingo about the Water Cycle