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ch 22 2nd hour
for school
| Question | Answer |
|---|---|
| fusion | Creation of energy by joining the nuclei of two hydrogen atoms to form helium. |
| convection | Heat transfer in a gas or liquid by the circulation of currents 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 photosphere |
| solar wind | A stream of electrically charged particles produced by the sun's corona |
| light-year | The distance light travels in one year |
| parallax | An apparent shift in the position of an object when viewed from different locations |
| 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 supergiant collapses to a very dense core |
| black hole | An object whose gravity is so strong that nothing, not even light, can escape. |
| quasar | a quasi-stellar object |
| Doppler Effect | An observed change in the frequency of a wave when the source or observer is moving |
| big bang | The initial explosion that resulted in the formation and expansion of the universe |
Created by:
jake_weinrich
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