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Unit 6 Universe Vocabulary > Unit 6 Universe Vocabulary > Flashcards

Unit 6 Universe Vocabulary Flashcards

1
Q

How bright a star would be if seen from a standard distance

A

Absolute Magnitude

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2
Q

How bright a star is when seen from Earth

A

Apparent Magnitude

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3
Q

A large group of stars, dust, and gas held together by gravity

A

Galaxy

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4
Q

A graph showing the correlation between the brightness and surface temperature of a star

A

H-R Diagram

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5
Q

The distance light can travel in a year, ~9.46 trillion km

A

Light-year

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6
Q

The true brightness of an object

A

Luminosity

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7
Q

An area on the H-R diagram where stars spend most of their life, diagonal pattern

A

Main Sequence

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8
Q

Large gas and dust formation, where stars are born

A

Nebula

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9
Q

When the core of a supernova collapses from gravity, electrons and protons crash together to form neutrons

A

Neutron Star

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10
Q

A roughly spherical celestial body orbiting a star

A

Planet

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11
Q

A highly magnetized neutron star that spins around and shoots out a beam of electromagnetic radiation

A

Pulsar

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12
Q

The action of a celestial body orbiting another celestial body

A

Revolution

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13
Q

The action of a celestial body spinning on its axis

A

Rotation

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14
Q

The collection of celestial bodies that orbit the Sun

A

Solar System

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15
Q

A celestial body that is made of gas and emits lights

A

Star

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16
Q

The distance between two troughs or crests next to each other in a wave

A

Wavelength

17
Q

A giant exploding star that expels its outer layers into space until only the core remains

A

Supernova

18
Q

Everything

A

Universe

19
Q

The core of a collapsed low-mass star

A

White Dwarf

20
Q

A galaxy shaped like a pinwheel, bulged center, and spiraling arms

A

Spiral Galaxy

21
Q

Galaxy shaped like an ellipse, bright center, little dust and gas

A

Elliptical Galaxy

22
Q

Weird shaped galaxy

A

Irregular Galaxy

23
Q

A spectrum including all different wavelengths and frequencies of electromagnetic radiation

A

Electromagnetic Spectrum

24
Q

Theory of how everything was created, all the matter in the universe was compressed into a very small space and exploded, rapidly expanding outwards, 13-15 billion years ago

A

Big Bang Theory

25
Q

Leftover electromagnetic radiation from the Big Bang

A

Cosmic Microwave Background

26
Q

When a wavelength is stretched out, it appears on the redder side of the spectrum, basically when a celestial body (like a star) is further away from us, it appears to be redder

A

Red Shift

27
Q

When a frequency/wavelength is closer/farther from the observer, there is a shift in the frequency

A

Doppler Effect

28
Q

A tool used to separate colors in light from stars

A

Spectroscope

Unit 6 Universe Vocabulary (1 decks)

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