sci vocab for the 5th time Flashcards

1
Q

Visible brightness of an object

A

apparent magnitude

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2
Q

Two stars orbiting one another

A

bionary star

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3
Q

small extremely dead star remnant with no light escapes

A

black hole

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4
Q

Layer of star between photosphere and Corona

A

chromosphere

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5
Q

group of stars with a recognizable pattern

A

constellation

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6
Q

top layer of star

A

Corona

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7
Q

process of splitting heavier nuclei into lighter nuclei

A

fission

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8
Q

process of combining nuclei

A

Fusion

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9
Q

graph relating to stellar characteristics of class, mass, temperature, etc.

A

Hertz Sprung - Russell diagram

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10
Q

energy output from surface of stars per second

A

luminosity

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11
Q

on the HR diagram the broad, diagonal band containing 90% of stars

A

Main

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12
Q

large clouds of interstellar gas and dust

A

Interstellar cloud

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13
Q

collapsed, dense core of star made up of mostly neutrons

A

neutron star

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14
Q

apparent position shift of object due to motion of observer

A

parallax

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15
Q

distance equal to 3.26 light years

A

parsec

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16
Q

lowest layer of star

A

photosphere

17
Q

Arc of Gas ejected from Chromosphere

A

prominence

18
Q

violent eruptions of radiation and particles associated with sunspots

A

solar flare

19
Q

wind of charged particles flowing outward from star traveling throughout the solar system

A

solar wind

20
Q

The rainbow when white light shines through a prism

A

Spectrum

21
Q

dark spots on surface of star

A

sunspots

22
Q

Massive explosion occurring when outer layer of star are blown off

A

Supernova

23
Q

distance between two identical points on a wave

A

wavelength

24
Q

average distance between Earth and Sun

A

astronomical unit

25
Q

Orbits ratio of the distance between foci and length of the major axis

A

eccentricity

26
Q

oval shape with two centers

A

ellipse

27
Q

objects and size of 1 km to hundreds of kilometers

A

planetesimals

28
Q

apparent backward movement of a planet

A

retrograde

29
Q

Hot condensed object at center of nebula

A

protostar

30
Q

A spinning neutron star exhibiting a pulsing pattern

A

pulsar