NS2 Test Bank: NS2-M3C14 - The Sun

Front

A thermonuclear reaction in which atoms are combined by heat and pressure to make a heavier, third atom.

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Thermonuclear fusion

Front

The radiant emission from the upper atmosphere sporadically over the middle and high latitudes of both hemispheres in the form of luminous bands, streamers, or the like; caused by the bombardment of the atmosphere with charged solar particles that are being guided along the Earth's magnetic lines of force.

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Aurora

Front

A stellar remnant composed mostly of electron-degenerate matter.

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White dwarf

Front

A unit of length, roughly the distance from the Earth to the Sun; abbreviation: au

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Astronomical unit

Front

A white or colored circle or set of concentric circles of light seen around a luminous body, especially around the Sun or Moon

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Corona

Front

"Southern Lights," dynamic displays of light similar to what is seen in the northern hemisphere, appearing in the Antarctic skies in winter

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Aurora Australis

Front

A luminous giant star of low or intermediate mass in a late phase of stellar evolution

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Red giant

Front

Through which layer of the Sun do sunspots rise?

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Chromosphere

Front

What is "Northern Lights," a natural light display in the sky caused by the collision of solar wind and magnetosphere-charged particles with the high-altitude atmosphere?

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Aurora Borealis

Front

An astronomical unit is the average distance between the Sun and Earth. Approximately how many millions of miles is this distance?

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