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Chapter 29 Science > Vocab > Flashcards

Vocab Flashcards

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0
Q

A measure of the amount of light that is received on earth

A

Apparent magnitude

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1
Q

A measure of the amount of light that a star actually admits

A

Absolute magnitude

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2
Q

A star system that contains two stars

A

Binary star

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3
Q

A gaseous layer of the suns atmosphere that is visible during a total eclipse of the sun

A

Chromosphere

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4
Q

A group of stars that form a pattern in the sky

A

Constellation

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5
Q

The outer most region of the suns atmosphere

A

Corona

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6
Q

The splitting of atoms that release a tremendous amount of energy and is used to start the chain reaction of an atomic explosion

A

Fission

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7
Q

A nuclear reaction and which nuclei combine to form more massive nuclei with the simultaneous release of energy

A

Fusion

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8
Q

A graph relating the temperature and brightness of stars

A

HR diagram

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9
Q

The distance light travels in one year

A

Light year

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10
Q

The amount of energy radiated by a star per second

A

Luminosity

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11
Q

A diagonal area on an HR diagram that includes more than 90% of all stars

A

Main sequence

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12
Q

A cloud of interstellar gas and dust

A

Nebula

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13
Q

The small dense remains of a high dense supernova

A

Neutron star

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14
Q

The apparent change in position of an object when seen from different places

A

Parallax

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15
Q

3.26 light years

A

Parsec

16
Q

Lowest layer of the suns atmosphere and the layer that gives off light

A

Photosphere

17
Q

A loop of gas the protrudes from the suns surface linking parts of sunspot regions

A

Prominence

18
Q

A rapidly spinning neutron start hat produces radio waves

A

Pulsar

19
Q

An eruption of gas from the suns surface that occurs when loops and sunspot regions suddenly connect

A

Solar flares

20
Q

Continuous stream of high energy particles released into space in all directions from the suns corona

A

Solar winds

21
Q

Particles from flares brought by solar wind cause auroras

A

Northern lights

22
Q

A ball of gas that produces energy by fusing hydrogen into helium average middle aged average brightness

A

Sun

Chapter 29 Science (1 decks)

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