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chapter 22

12 vocab words

black hole An object whose gravity is so strong that nothing, not even light, can escape.
fusion Creation of energy by joining the nuclei of two hydrogen atoms to form helium.
Doppler effect An observed change in the frequency of a wave when the source or observer is moving
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.
light year The distance light travels in one year
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
parallex An apparent shift in the 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 darker spot appearing periodically on the sun's photosphere
Created by: mrgan_greil
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