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Chapter 22 Science
Science vocabulary- Space
Term | Definition |
---|---|
black hole | An object whose gravity is so strong that nothing can escape it |
convection | H eat 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 |
doppler effect | The observed change in frequency when the source or observer is moving |
fusion | The creation of energy by joining two nuclei of hydrogen atoms to create helium |
light year | The distance light travels in one year |
main sequence | The stage in which stars produce energy through the fusion of hydrogen into helium |
nebula | A large clud of gas and dust that can break apart to form stars |
neutron star | May occur when a supergiant collapses to a very dense core |
parallax | An apparant shift in position of an object when viewed from different locations |
solar wind | a stream of electrically charged particles produced by the sun's corona |
sunspot | a cooler dark spot periodically appearing on the sun's photosphere |