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chapter 22
science vocab
| Term | Definition |
|---|---|
| Fusion | creation of energy by two hydrogen atoms coming creating helium |
| connvection | heat transfer in a gas or liquid by the circulation of currents from from one region to another |
| corona | The outer layer of the sun's atmosphere. |
| sunspot | a cooler darker spot appearing periodically on the sun's photo sphere |
| solar wind | A stream of electrically charged particles produced by the sun's corona |
| nebula | a large cloud of dust and gas that can break apart into smaller pieces and form stars |
| main sequence | the stage in which stars produce energy through the fusion of hydrogen into helium |
| neutron star | may occur when a super giant collapses to a very dense core |
| black hole | An object whose gravity is so strong that nothing, not even light, can escape. |
| doppler effect | An observed change in the frequency of a wave when the source or observer is moving |
| light year | distance light travels in a year |
| parrallex | An apparent shift in the position of an object when viewed from different locations |
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Samantha_Brown