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m mn > vocab > Flashcards

vocab Flashcards

1
Q

Absolute Magnitude

A

A brightness scale is used to measure how bright a star would be at a standard distance

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2
Q

apparent magnitude

A

The brightness of a star at earths view

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3
Q

galaxy

A

Large collection of stars, dust, and planets bound together by gravity

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4
Q

H-R diagram

A

A graph that shows the relation between heat and size of a star

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5
Q

Light Year

A

the distance light travels in about a year.

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6
Q

Luminosity

A

The actual brightness of a star

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7
Q

Main Sequence

A

where stars spend most of their lives

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8
Q

Nebula

A

A large cloud of dust where stars are born

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9
Q

Neutron star

A

The core of a supernova that has collapsed, atoms are smashed together to build neutrons

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10
Q

Planet

A

A large spherical body that orbits a star

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11
Q

Pulsar

A

beam of light and matter

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12
Q

Revolution

A

One orbit trip

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13
Q

Rotation

A

The spin of a body on its axis

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14
Q

Solar system

A

collection of large and small planets orbiting a star

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15
Q

wavelength

A

the distance between two adjacent crests

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16
Q

Supernova

A

A large-scale explosion when a large star removes their outer layer keeping the core

17
Q

Universe

A

Space and all the matter and energy in it

18
Q

White dwarf

A

A hot dence mini sun

19
Q

Spiral galaxy

A

a galaxy that has arms protruding out, in a spiral shape

20
Q

elliptical galaxy

A

a spherical or elongated galaxy with a bright center

21
Q

Irregular Galaxy

A

a Galaxy with an irregular shape

22
Q

Electromagnetic Spectrum

A

all the different wavelengths of electromagnetic waves and radiation

23
Q

Big Bang Theory

A

Theory where all matter and energy was created when the universe exploded and created it

24
Q

Cosmic Microwave Background

A

the Electromagnetic radiation left over the formation of the universe

25
Q

Red Shift

A

when a star or galaxy moves away, reflecting red light toward us

26
Q

Doppler Effect

A

A change in frequency or wavelength when the source is moving with respect of the observer

27
Q

Spectroscope

A

tool used to collect light from stars.

m mn (1 decks)

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