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Flashcards in stars and galaxies Deck (17):
1

blue/ white stars

hot and young

2

yellow stars

warm and middle age

3

red stars

cool and old

4

what is the difference between apparent and absolute magnitude

apparent is the amount of light received on earth and absolute is the actual amount

5

what do constellations help with

navigation, direction

6

what is nebula made of

gas and dust

7

how does mass affect life cycle of star

because it determines whether it will be high or low mass

8

what is the life cycle of low mass

nebula, protostar, main sequence, red giant, planetary nebula, white dwarf, black dwarf

9

what is the life cycle of high mass

nebula, protostar, main sequence, red super giant supernova to either neutron or black hole

10

what does high and low mass cycles share

nebula, protostar, main sequence

11

what happens during a planetary nebula

outer layers of the star start to break away the core is hot and luminous

12

what happens during a supernova

core becomes so heavy that it cannot withstand its own gravitational force it explodes on itself

13

how long is low mass in main sequence

10 billion

14

how long is high mass in main sequence

20 million

15

can the dust from a supernova become part of nebula

yes

16

what are the four types of galaxies

elliptical, spiral, barred spiral, irregular

17

how do irregular galaxies form

when two galaxies collide