Unit 6 Universe Vocabulary

Question 1

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

Answer 1

Absolute Magnitude

Question 2

How bright a star is when seen from Earth

Answer 2

Apparent Magnitude

Question 3

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

Answer 3

Galaxy

Question 4

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

Answer 4

H-R Diagram

Question 5

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

Answer 5

Light-year

Question 6

The true brightness of an object

Answer 6

Luminosity

Question 7

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

Answer 7

Main Sequence

Question 8

Large gas and dust formation, where stars are born

Answer 8

Nebula

Question 9

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

Answer 9

Neutron Star

Question 10

A roughly spherical celestial body orbiting a star

Answer 10

Planet

Question 11

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

Answer 11

Pulsar

Question 12

The action of a celestial body orbiting another celestial body

Answer 12

Revolution

Question 13

The action of a celestial body spinning on its axis

Answer 13

Rotation

Question 14

The collection of celestial bodies that orbit the Sun

Answer 14

Solar System

Question 15

A celestial body that is made of gas and emits lights

Answer 15

Star

Question 16

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

Answer 16

Wavelength

Question 17

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

Answer 17

Supernova

Question 18

Everything

Answer 18

Universe

Question 19

The core of a collapsed low-mass star

Answer 19

White Dwarf

Question 20

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

Answer 20

Spiral Galaxy

Question 21

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

Answer 21

Elliptical Galaxy

Question 22

Weird shaped galaxy

Answer 22

Irregular Galaxy

Question 23

A spectrum including all different wavelengths and frequencies of electromagnetic radiation

Answer 23

Electromagnetic Spectrum

Question 24

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

Answer 24

Big Bang Theory

Question 25

Leftover electromagnetic radiation from the Big Bang

Answer 25

Cosmic Microwave Background

Question 26

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

Answer 26

Red Shift

Question 27

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

Answer 27

Doppler Effect

Question 28

A tool used to separate colors in light from stars

Answer 28

Spectroscope