Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

PHYSICAL SCIENCE > M2 part 2 > Flashcards

M2 part 2 Flashcards

1
Q

a giant balls mostly made of hydrogen and helium

A

stars

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

stars are mostly made of

A

hydrogen and helium

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

act as sites for nuclear reactions in the universe

A

stars

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

fuse light element to form heavier elements

A

stars

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

stars functions

A
  • act as sites for nuclear reactions in the universe
  • fuse light elements to form heavier elements
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

why are the stars so bright

A

reaction involve light emission

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

the cloud of hydrogen and helium gases
condensed to form stars

A

stellar nuclesynthesis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

how do stars form

A

cloud of hydrogen and helium gases condensed

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

stars made of hydrogen became

A

hotter and denser

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

during the process of stellar evolution, nuclear reactions continued producing

A

elements heavier than LITHIUM

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

HOW DOES HEAVY ELEMENTS FORMED

A

combination of light elements

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Stars much larger than our Sun can fuse

A

heavier elements from lighter elements

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

These giant stars have an

A

“onion layer” structure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

As you proceed deeper into the star, temperatures and pressures

A

increases

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

what does fused together when you proceed deeper into the star

A

heavier nuclei

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

The heaviest element that can be made in a star is

A

iron (Fe)

17
Q

In the adjacent diagrams, the term “burning” really means

A

nuclear fusion

18
Q

initially fueled young stars and through nuclear reactions, new elements are formed in certain regions or layers of a star
called the fusion shells.

A

hydrogen

19
Q

new elements are
formed in certain regions or layers of a star
called the

A

fusion shells

20
Q

When most of the hydrogen in the core is
fused into helium, fusion stops and the
pressure in the core

A

decreases

21
Q

how does helium-hydrogen burning occurs

A

when gravity squeezes the star

22
Q

Gravity squeezes the star to a point that helium-hydrogen burning occurs. Thus, converting

A

helium to carbon

23
Q

When the majority of the helium in the core has been converted to carbon…..

A

the rate of alpha fusion processes decreases

24
Q

when does the rate of alpha fusion processes
decreases

A

majority of the helium in the core has been
converted to carbon

25
Q

formed from carbon fusion

A

neon

26
Q

formed from neon fusion

A

oxygen

27
Q

formed from oxygen fusion

A

silicon

28
Q

formed from silicon fusion

A

iron

29
Q

layers of multiple-shell red giant

A
  • hydrogen and helium outer envelope
  • helium rich, hydrogen burning shell
  • carbon rich, helium burning shell
  • oxygen rich, carbon burning shell
  • silicon rich, oxygen burning shell
  • iron rich, silicon burning inner core

PHYSICAL SCIENCE (5 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions