unit 20: components of the universe

Question 1

the brightness of a star as it would be seen from 32.6 light years away

Answer 1

absolute magnitude

Question 2

a space object so dense and massive that even light cannot escape its gravitational pull

Answer 2

Black hole

Question 3

The sorting of objects into groups that are alike in some way

Answer 3

Classification

Question 4

A part of a larger whole

Answer 4

component

Question 5

To tell in written or spoken words

Answer 5

describe

Question 6

The most common type of galaxy that has an oval shape

Answer 6

elliptical galaxy

Question 7

A grouping of stars gas and dust held together by gravity

Answer 7

Galaxy

Question 8

A graph in which the absolute magnitude of stars is plotted vertically against their surface temperatures

Answer 8

hertzsprung-russell diagram

Question 9

A galaxy that does not have a regular shape

Answer 9

irregular galaxy

Question 10

A point in the lifecycle of a star when it uses hydrogen as it’s fuel source

Answer 10

main sequence star

Question 11

A star with a high mass that uses helium as it’s fuel source

Answer 11

massive star

Question 12

A copy or replica of an object

Answer 12

model

Question 13

A large cloud of gas and dust in space

Answer 13

nebula

Question 14

A very dense compact star composed primarily of neutrons formed from the collapsed core of a supernova

Answer 14

neutron star

Question 15

A ring-shaped nebula formed by expanding gas around and aging star

Answer 15

Planetary nebula

Question 16

A luminous giant star with moderate mass in the late days of stellular evolution

Answer 16

red giant

Question 17

And extremely large star largest in volume with radii 200 to 800 times greater than the sun

Answer 17

Red super giant

Question 18

A tool used to examine and observe light

Answer 18

spectroscope

Question 19

A galaxy that forms a pinwheel shape

Answer 19

spiral galaxy

Question 20

A huge ball of gas in space that releases heat and light

Answer 20

Star

Question 21

An explosion of a star that occurs during the final stage in the lifecycle of some stars

Answer 21

supernova

Question 22

All matter and energy as a whole including earth the galaxies and space

Answer 22

Universe

Question 23

The extremely dense hot bright remnants of a collapsed star

Answer 23

White dwarf