Chapter 19

Question 1

The band of colors produced when white light passes through a prism

Answer 1

spectrum

Question 2

the brightness of a star as seen from the earth

Answer 2

apparent magnitude

Question 3

the brightness that a star would have at a distance of 32.6 light years from earth

Answer 3

absolute magnintude

Question 4

an apparent shift in the position of an object when viewed from different locations

Answer 4

parallax

Question 5

a large reddish star late in it’s life cycle

Answer 5

red giant

Question 6

a small hot dim star that is the left over center of an old star

Answer 6

white dwarf

Question 7

the location on the h-r diagram where most stars lie. it has a diagonal pattern from the lower right to the upper left.

Answer 7

main sequence

Question 8

a graph that shows the relationship between a star’s surface temperature and absolute magnitude.

Answer 8

HR Diagram (Hertzsprung Russell diagram)

Question 9

a gigantic explosion in which a massive star collapses and throws it’s outer layers into space

Answer 9

supernova

Question 10

a star that has collapsed under gravity to the point that the electrons and protons have smashed together to form neutrons.

Answer 10

neutron star

Question 11

a rapidly spinning neutron star that emits rapid pulses of radio and optical energy.

Answer 11

pulsar

Question 12

an object so massive and dense that even light cannot escape its energy

Answer 12

black hole

Question 13

the study of the origin, properties, processes and evolution of the universe

Answer 13

cosmology

Question 14

a tight group of stars that look like a ball and contains up to 1 million stars

Answer 14

globular cluster

Question 15

large groups of stars, dust and gas are called galaxies

Answer 15

galaxies

Question 16

a large cloud of gas and dust in interstellar space a region in space where starts are born or where stars explode at the end of their lives.

Answer 16

nebula

Question 17

a group of stars that are close together relative to surrounding stars.

Answer 17

open cluster

Question 18

a very luminous, star like object that generates energy at a high rate. quasars are thought to be the most distant objects in the universe.

Answer 18

quasar

Question 19

many look like spheres and others are more stretched out. the galaxies are called elliptical galaxies

Answer 19

elliptical galaxy

Question 20

a cloud of gas that is spinning and where nuclear reactions are taking place where it begins to glow. it is the beginning of a star.

Answer 20

protostar