Stars and Galaxies

Question 1

Patterns of stars in the night sky are

Answer 1

Constellations

Question 2

Characteristics used to classify stars

Answer 2

Color ,temperature ,size, composition and brightness

Question 3

Absolute magnitude

Answer 3

Measure of the amount of light a star gives off

Question 4

Apparent magnitude

Answer 4

Measure of the amount of light received on earth

Question 5

Light year

Answer 5

Distance that light travels in one year

9.5 trill km

Question 6

Spectra

Answer 6

Range of wavelengths

Question 7

Spectroscope

Answer 7

Used to spread light into different wavelengths

Question 8

When is a star born

Answer 8

When the contracting gas from a nebula become so dense and hot that a nuclear fusion starts

Question 9

Nebula

Answer 9

Large cloud

Question 10

What happens after a star runs out of fuel

Answer 10

It becomes a white dwarf, nuetron star, or a black hole

Question 11

Star systems

Answer 11

Groups of two or more stars

Question 12

Huge group of single stars, star system, star clusters, dust and gas bound together by gravity

Answer 12

Galaxy

Question 13

Has bulge in the middle and arms spiral outward

Answer 13

Spiral

Question 14

Round or flattened balls; contain only old stars

Answer 14

Elliptical

Question 15

No regular shapes; generally bright young stars

Answer 15

Irregular

Question 16

Active young galaxies w/ black holes at their centers

Answer 16

Quasars