planets with a solid surface, such as Mars or Mercury

a rotating cloud of gas and dust from which the sun and planets formed

The idea that the solar system evolved from an enormous rotating cloud of gas & dust over millions of years

the slow growth in size or mass by adding or accumulating more material

Which of Kepler's laws state that as a planet moves around the sun, its speed increases as it (the planet) nears the sun

considered a year in the life of a planet--1 trip around the sun

the building blocks of planets; small bodies that accrete material and become planets

Which of Kepler's laws state that planets in the outer solar system have a lower orbital speed since they are farther away from the gravitational pull of the sun

small, rocky body orbiting the sun between Jupiter & Mars

Which of Kepler's laws state that the orbital paths of the planets are not circular, but elliptical

The age of the earth has been established as

the __________ _____ is located between the orbits of Mars and Jupiter; home to Ceres

The moon formed when

Which of the following is not a part of the formation of the earth?

stage of the development of the solar system when asteroids and planets collided frequently

Thanks to these life forms, the earth's atmosphere was populated with oxygen

what is another name for the revolution of a planet around the central star?

when a planet draws closer to the sun while traveling in its orbit, the orbital speed will

The moons Callisto, Io, Ganymede and Europa are the moons found around the planet

this process removed toxic carbon dioxide from the atmosphere and populated the earth's atmosphere with oxygen

A body in space that grows by the accumulation of planetesimals but has not yet become big enough to be called a planet

The moons of Charon, Hydra, and Styx are located around which of the following objects in the solar system?

Mercury has the shortest year, Pluto has the longest...this information is supporting Kepler's _____ law

Thanks to the moon, the earth has tidal action and also has a

starting at the asteroid belt, the order of the planets as you go out of the solar system is

Earth moves around the sun in the shape shown ...this information is supporting Kepler's _____ law

The shape of the orbit of the planets shown in the image to the left is termed a(n)

the orbital speed of a comet slows down as it moves away from the sun...this information is supporting Kepler's _____ law

The distance between the earth and the moon has been and will continue to

The earth's _____________ protects the planet & its life forms from the solar wind

starting at the sun, the first 4 planets are...

two planets without any moons

Which is NOT a similarity of earth and Mars?

A grouping of an enormous number of galaxies.

part of our cosmic address that includes 20-30 galaxies that includes the Milky Way

galaxy closest to the Milky Way @ 2.5 million Light Years

the Supercluster of our Cosmic Address

a star in the sun's neighborhood