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Solar System& Uni
Earth sic vocab
| Term | Definition |
|---|---|
| Asteroid | A small rock orbiting the sun |
| Axis | An invisible line that an a object rotates around |
| The big bang theory | How astronomers explain the start of the universe and how one single point expanded |
| Comet | A cosmic snowball of frozen gasses and dust that orbits the sun |
| Day | A time of of period when the earth goes around the axis for about 24 hours |
| Doppler affect | change in frequency of a wave for an observer moving like it's source |
| Eccentricity | Measure of how oval a orbit is shaped |
| fission | energy being put out and splits an atom into two |
| Focus/Foci | The two points of an ellipse that determines the shapes curve |
| Galaxy | A huge collection of gas,dust,stars, in their solar system |
| Geocentric model | An theory of how the structure of the solar system, in which the earth is assumed to be at the center |
| Gravity | universal pull between all matter |