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Universe Formation
List of vocab words of the universe formation
| Question | Answer |
|---|---|
| Define Asteroid | rocky remnantof the early solar system found mostly in the asteroid belt. |
| Define Asteroid Impact | An impact event is the collision of a large asteroid with the earth or another planet. |
| Define Galaxy | A system of millions/billions of stars together with gas and dust held together by a gravitational attraction. |
| Define hydrogen | A colorless, highly flammable, odorless gas. |
| Define Mass | a measure of the resistance an object has to change in its velocity. |
| Define Milky Way | Our galaxy, on Orion's Arm |
| Define Orbit | The curved path a celestial object around a star, planet, or moon. |
| Define Planet | A celestial body moving in an elliptical orbit around a star. |
| Define revolution | the curved path of a celestial ovject around the sun. |
| Define rotataion | the action of rotating around and axis or center. |
| Define Solar System | The collectionn of planets and their moons in orbit around a sun together with smaller bodies like asteroids, meteroids, and comets. |
| Define Sun | A medium sized star. |
| Define Universe | All exting matter and space considered as a whole. |
| What is the age of the universe? | 13.7 billions years old. |
| Define Astronomical Distance | Distance between Earth and the Sun. |
| What is the Big Bang Theory? | The theory that the universe began as a point and has been expanding since. |
| Define Cosmic Microwave Background. | The cooled remnant of the hot big band that fills the entire universe and can be observed today. |
| Define Expansion of the universe | The observation in physical cosmology that the velocity at which various galaxies are receding from the Earth. |
| What evidence is there of the Big Bang Theory? | Expansion of the Universe and Cosmic Microwave Background. |
| Define Ga | Billiono of Years ago. |
| Define light year | A measurement, not time. The distance light travels in one year. |
| Define Nebula | The formation of a star that begins with a cloud of interstellar gas and dust that collapses on its self |
| Define Nova | Star stage of Explosion |
| Define Nuclear fusion | H->He |
| What is the speed of light? | 300,000 km/sec 186,000 miles/sec |
| How does a star form? | When dense parts of molecular clouds collapse into a ball of plasma to form a star. |
| Define Protostar | A disk shape with a hot condensed object in the center. |
| Define Astronomy | The branch of science that deals with celestial objects, space, and the physcial universe as a whole. |
| Define cosmology | the study of the universe, it's nature, origin, and evolution. |
| Define Celestial | Relating to the sky, or outer space as observed in astronomy. |
Created by:
ni0l
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