EU - Chapter 10 Vocabulary

Question 1

Binary System

Answer 1

A star-and-planet system with two starts at its center(Pg. 352)

Question 2

Black Hole

Answer 2

A region of space where gravitational forces are so strong that nothing, not even light, can space (Pg. 357)

Question 3

Dark Matter

Answer 3

Matter in the universe that is invisible because it does not interact with light or any other kind of radiation (Pg. 366)

Question 4

Galaxy

Answer 4

A collection of hundreds of billions of stars that are held together by gravitational forces (Pg. 350)

Question 5

Magnitude

Answer 5

A measure of brightness of a star (Pg. 351)

Question 6

Protostar

Answer 6

A star in its first stage of formation (Pg. 353)

Question 7

Quasars

Answer 7

The brightest and most distant objects in the universe, believed by scientists to be supermassive black holes at the centres of distant galaxies (Pg. 366)

Question 8

Supernova

Answer 8

The explosion of a high mass star (Pg. 356)

Question 9

Universe

Answer 9

Everything that physically exists; the entirety of space and time, and all forms of matter and energy (Pg. 349)