Galaxy Flashcards by Cole Barra

Q

absoulute magnitude

A

A brightness scale all stars at same distance

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Q

apparent magnitude

A

Brightness of star as seen from earth

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Q

galaxy

A

Large collection of stars

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Q

H-r Diagram

A

Shows relationship between temperature and magnitude

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Q

light year

A

Distance light travels through space in one year which is 9.46 trillion kilo

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Q

luminosity

A

Actual brightness of star

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Q

Main sequence

A

Where stars spend most of their time

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Q

Nebula

A

Large cloud of dust

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Q

Neutron star

A

Core of supernova

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Q

Planet

A

Large spherical body

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Q

Revolution

A

Motion of body traveling around other body

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Q

Rotation

A

Spin of body on axis

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Q

Solar System

A

Collection of large and small bodies

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Q

Star

A

Large celestial body composed of gas

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Q

Wave length

A

Distance between two adjacent

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Q

Supernova

A

Core of star

Q

Universe

A

Space and all the mater and energy in it

Q

White dwarf

A

Hot dense dim core

Q

Spiral galaxy

A

Galaxy shaped like a pin wheel

Q

Elliptical Galaxy

A

Spherical elongated galaxy

Q

Iregulat galaxy

A

a galaxy that is irregular

Q

Electrometric spectrum

A

All the different wave lengths and their colors

Q

Big Bang theory

A

theory of all matter and energy in the universe

Q

Cosmic microwave Back round

A

Electromagnetic energy left over from universe

Q

Red shift

A

Star of galaxy moving away from earth

Q

Doppler Effect

A

Change in wavelength

Q

A