Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Science Vocabulary
Vocabulary
| Term | Definition |
|---|---|
| Astronomy | the branch of science that deals with celestial objects, space, and the physical universe as a whole. |
| Geocentric | Having or representing the earth as the center, as in former astronomical systems. |
| Heliocentric | Having or representing the sun as the center, as in the accepted astronomical model of th solar system. |
| Ellipse | A regular oval shape, traced by a point moving in a plane so that the sum of it's distances from two other points (the foci) is constant. |
| Astronomical Unit (AU) | A unit of measurement equal to 149.6 million kilometers, the mean distance from the center of the earth to the center of the sun. |
| Rotation | The action of rotating around an axis or center. |
| Revolution | A radical and pervasive change in society and the social structure. |
| Perihelion | The point in the orbit of a planet or comet at which it is nearest to the sun. |
| Aphelion | The point inthe orbit of a planet or a comet at which it is farthest from the sun. |
| Phases of the moon | Full moon-->Wanning gibbous-->Third quarter-->Waning crescent-->New-->Waxing creascent-->First quarter-->Waxing gibbous |
| Solar eclipse | The obscuration of the light of the sun by the intervention of the moon between it and a point on the earth. |
| Lunar eclipse | The obsuration of the light of the moon by the intervention of the earth between it and the sun. |
| Terrestrial planet | Are inner planets closest to the sun like Mercury, Venus, Earth, and Mars. |
| Jovian planet | Any of the four large outer planets: Jupiter, Saturn, Uranus, and Neptune. |
| Asteroid | Any of the thousands of small bodies that evolve about the sun in or bits lying mostly between those of Mars and Jupiter. |
| Comet | A celestial body moving about the sun. |
| Meteoroid | Any of the small bodies, often renmants of comets, traveling trough space. |
| Meteor | A transient fiery streak in the sky produced by a meteoroid passing through the earth's atmosphere. |
| Meteorite | A mass of stone or metal that has reached the earth from outer space. |
| Electromagnetic spectrum | The entire spectrum, considered as a continuum, of all kids of electric, magnetic, and visable radiation. |
| Photon | A quantum of electromagnetic radiation. |
| Doppler Effect | The shift in frequency of acoustic or electromagnetic radiation emmited by a source moving relative to an observer as preceived by the observer. |
| Refracting telescope | One of the two principal forms (refracting telescope) consists essentially of an objective lens set into one end of a tube and an adjustable eyepiece or combination of lenses set into the other end of a tube that slides into the first and through which th |
| Reflecting telescope | The other form has a concave mirror that gathers light from the object and focuses it into an adjustable eyepiece or combination of lenses through which the reflection of the object is enlarged and viewed. |
| Radio telescope | A system consisting of an antenna, either parabolic or dipolar, used to gather radio waves emitted by celestial sources and bring them to a receiver placed in the focus. |
| Hubble telescope | A telescope launched into orbit around the earth. |
| Space shuttle | Any of several U.S. space vehicles consisting of a reusable manned orbiter that touches down on a landing strip after an orbital mission. |
Created by:
3108096
Popular Earth Science sets