Vocab

the arrangement of electromagnetic radiation according to wavelength

a small packet of light energy

the study of the properties of light that depend on wavelength

an uninterrupted band of light emitted by an incandescent solid, liquid, or gas under pressure

a continuous spectrum produced when white light is passed through a cool gas under low pressure; The gas absorbs selected wavelengths of light, and the spectrum looks like it has dark lines superimposed.

a series of bright lines of particular wavelengths produced by a hot gas under low pressure

the apparent change in frequency of electromagnetic or sound waves caused by the relative motions of the source and the observer

a telescope that uses a lens to bend and concentrate the light from distant objects

the property of a lens whereby light of different colors is focused at different places

a telescope that concentrates light from distant objects by using a concave mirror

a telescope designed to make observations in radio wavelengths

the region of the sun that radiates energy to space; the visible surface of the sun

the first layer of the solar atmosphere found directly above the photosphere

the outer weak layer of the solar atmosphere

streams of protons and electrons ejected at high speed from the solar corona

a dark spot on the sun, which is cool by contrast to the surrounding photosphere

a concentration of gases above the solar surface that appears as a bright archlike structure

a sudden and tremendous eruption in the solar chromosphere

a bright display of ever-changing light caused by solar radiation interacting with the upper atmosphere in the region of the pole

the way in which the sun produces energy; Nuclear fusion occurs when less massive nuclei combine into more massive nuclei, releasing tremendous amounts of energy.