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chapter 22

science vocab

TermDefinition
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
Created by: Samantha_Brown
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