Explain the Following Terms

Name: ______

Troop: ______

Explain or Define the following terms:

Planet: A rocky or gaseous body orbiting a star that is large enough to form a round shape and clear similar sized object from its orbital path.______

Star: A celestial object that is large enough to emit its own light by fusing one element into another. ______

Solar system: Will be comprised of a group of objects containing a single star or multiple stars and has an association of planets, moons, asteroids, and comets in orbit around the main star(s).

Galaxy: A collection of solar systems, stars, gas and dust held together by gravity.______

The Milky Way: Our Home Galaxy______

______

Black hole: The remnant of a star or multiple stars that were large enough to completely collapse in upon itself and was so massive that nothing, not even light was able to escape its grasp.______

Red giant: A star that has neared the end of its life and it no longer has enough hydrogen fuel to convert into helium and it has become enlarged in size.______Name: ______

Troop: ______

Explain or Define the following terms:

White dwarf: The remnant of a star that was close in size to our own sun. At the end of its life, it has collapsed to the size of our planet and the material left behind is very dense.

Comet: An object consisting of rock and ice that emits a gaseous tail as it orbits a star. ______

Meteor: A metallic, stoney or glass like object that passes through a planet’s atmosphere and leaves a light trail to mark it’s passing. If it is large enough to have a piece reach the ground it becomes a meteorite.______

Moon: Usually a natural celestial body that orbits a planet ina solar system. Man-made objects in orbit are called artifical moons or satellites.______

Asteroid: A rocky or metallic body that orbits a star(s) or a planet, sometimes thought to be remnants of a moon or planet that was destroyed by collisions. A majority of these types of objects are in orbit between Mars and Jupiter in our own solar system.

Universe: Comprises everything that can be observed using all of our five senses.______