Exploring the Solar System and Universe: Vocabulary Overview
Explore key terms related to the Solar System and Universe, including concepts such as accretion, asteroids, the Big Bang Theory, black holes, clusters, comets, galaxies, light-years, nebulae, the Nebular Model, planets, and red giants. Enhance your understanding of these phenomena and their significance in the vastness of space.
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Chapter 19/20 Chapter 19/20 Vocabulary Vocabulary Solar System & Universe
Accretion Accretion the accumulation of matter
Asteroid Asteroid a small, rocky object that orbits the sun, usually found in a band between the orbits of Mars and Jupiter
Big Bang Theory Big Bang Theory the theory that all matter and energy in the universe was compressed into an extremely small volume that 10 to 20 billion years ago exploded and began to expand in all directions
Black Hole Black Hole a object so massive and dense that not even light can escape its gravity
Cluster Cluster a group of stars or galaxies bound by gravity
Comet Comet a small body of ice, rock, and cosmic dust loosely packed together that follows an elliptical orbit and that gives off gas and dust in the form of a tail as it passes close to the sun
Galaxy Galaxy a collection of stars, dust, and gas, bound together by gravity
Light Light- -Year Year the distance that light travels in one year
Nebula Nebula a large cloud of dust and gas in interstellar space
Nebular Model Nebular Model a model for the formation of the solar system in which the sun and planets condense from a cloud (or nebula) of gas and dust
Planet Planet any large body that orbits the sun or other star
Red Giant Red Giant a large reddish star late in its life cycle
Satellite Satellite a natural or artificial body that revolves around a planet
Solar System Solar System the sun and all the planets and other bodies that travel around it
Star Star a large celestial body that is composed of gas and that emits light
Supernova Supernova a gigantic explosion in which a massive star collapses and throws its outer layers into space
Universe Universe the sum of all space, matter, and energy that exist, that have existed in the past, and that will exist in the future
White Dwarf White Dwarf a small, hot, dim star that is the left over center of an old star
