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S. Mercado-Astronomy
B3 ESPS
| Term | Definition |
|---|---|
| Astronomy | The study of the universe |
| Big Bang Theory | The beginning of the universe |
| Red Shift | Moving away |
| Blue Shft | Moving towards |
| Frequency | The number of waves produced in a given amount of time |
| Wavelength | The distance on any point on a wave to an identical point on the next wave |
| Absolute Brightness (Magnitude) | How bright a star really is |
| Apparent Brightness (Magnitude) | How bright a star appears to be from earth |
| Cosmic Microwave Background (CMB) | Glow leftover from the Big Bang |
| Universe | Space and all the matter and energy in it |
| Galaxy | A huge system of stars |
| Electromagnetic Spectrum | The full range of electromagnetic radiation |
| Astronomical Unit (AU) | Distance from the earth to the sun |
| Light Year | The distance light travels in one year |
| Cosmology | Study of the universe |
| Solar System | A system of objects that revolves around a star |
| Star | Giant ball of hot gas |
| Stellar Spectra | Continuous black body spectrum and photosphere |
| Planet | A large body in a space that orbits a star but does not produce any light of its own |
| Solar Nebula | A large cloud of gas and dust |
| Gas Giant | A large planet; Composed mainly of gas |
| Nuclear Fusion | The process of which hydrogen atoms join together in the suns core to form helium |
| Main Sequence | Diagonal pattern of stars |
| HR Diagram | A graph relating the temperature and brightness of a star |
| Red Giant | A large, reddish star late in its life cycle |
| White Dwarf | A small, hot, dim star that is the leftover center of an old star |
| Nova | A star that explosively increases in brightness |
| Neutron Star | A small sphere of neutrons left behind by a massive-star supernova |
| Pulsar | A rapidly spinning neutron star that produces radio waves |
| Black Hole | An object whose gravity is so strong that nothing, not even light, can escaoe |
| Convective Zone | A location within the sun where the hot material rises and the cool material falls back inward; Movement of matter as a result of temperature differneces |
| Photosphere | The visible surface of the sun |
| Chromosphere | The middle layer of the sun's atmosphere |
| Corona | The outer layer of the sun's atmosphere |
| Sunspot | A dark area of gas on the sun's surface that is colder than surrounding gases |
| Prominence | A loop of gases that protrudes from the sun's surface, linking parts of the sunspot regions |
| Solar Flare | A sudden eruption of intense high-energy radiation from the sun's surface |
| Coronal Mass Ejection | An event when hot coronal gas is suddenly ejected into space with speeds of hundreds kilometers per second |
Created by:
smercado28
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