Brainscape's Knowledge GenomeTM

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


See full index

Physics Paper 2 > space physics > Flashcards

space physics Flashcards

1
Q

what is our solar sytem part of

A

small part of milky way galaxy

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

what does the solar system involve

A

-1star=the sun
-8planet and dwarf planet = orbit sun
-asteriod and comet = orbit sun
-moon orbit planet = natural satellite

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

what is nebula

A

cloud of dust and gas

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

how was the sun formed

A

sun was formed by nebula oulled together by gravitional attraction

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

what is the start of lifecycle stars

A

nebula

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

how does protostar occur

A

as dust and gas drawn together by gravity it causes to collapse-as particle move faster=tempt rises to million of degree celcuis

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

what is protostar

A

hot dense mass that form when nebula collapse

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

how is helium nuclei formed and process

A

from protostar if still high enough-hydrogen nuclei join together to form helium nuclei. - process nuclear fusion

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

nuclear fusion what happens

A

release huge amount of energy and can’t make element heavier than iron

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

what does gravity provide

A

provide force that allow planet and satellite to maintain their ciruclar orbit

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

planet and satellite are..

A

both natural and artificial

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

what is circular orbit

A

earth follows the path of a circle

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

what does earth orbit…
and draw it

A

orbit the sun
-sun tiny circle around is earth

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

what is main sequence star

A

period lifecycle of a star

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

what is supernova - massive star

A

large star explode because force within it no longer stable balanced

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

how does supernova distrubte universe

A

explosion of massive star distributes elements throughout universe

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

where are elements heavier than iron produced and why

A

supernova
after explosion has high enough temperature to produce heavier element than iron

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

what is neutron stars

A

consistent neutrons densely packed togeher

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

what is black hole

A

large gravity that not even light can escape

20
Q

cycle of star

A

cloud of dust and gas -nebula
protostar
main sequence
STAR SAME SIZE - redgiant, white dwarf, black dward
STAR BIGGER - red super giant, supernova, neutron star/black hole

21
Q

explain steps of lifecyle star same size as sun

A
  1. nebula
    2.protostar- collapse of star causes its tempt increase
  2. main sequence - helium nuclei fuse togeher, create heavier element that iron
  3. red giant-star expand
  4. white dwarf- red giant stop fusing helium , star shrinks, no longer fusing, gradually cools down
  5. black dward- eventually stop relase energy and forms.
22
Q

steps of star much bigger than sun in lifesycle

A
  1. nebula
    2.protostar- collapse of star causes its tempt increase
  2. main sequence - helium nuclei fuse togeher, create heavier element that iron
  3. red super giant- star run out hydrogen and leave mainsequence, expand into red giant
  4. supernova- stop carrying out nuclear fusion, star explodes
  5. neutron star/black hole - after explodes, remain star form one of two object as distrubtes universe.
23
Q

what is elliptical orbit and diagram

A

planet orbit the sun
-sun tiny circle, around planet

24
Q

what is force of gravity do

A

hold planets in their orbit

25
Q

earth orbit is…

A

vertically circular

26
Q

what orbit is moon

A

circular orbit around the earth

27
Q

diagram of moon orbit, and what does force of gravity do to this

A

force of gravity holds the moon in its orbit
-earth tiny cirlce, around moon
-arrow force of gravity

28
Q

what does arrow show

A

direction orbit is moving - direction, speed, velocity change constant

29
Q

what is artificial satellite

A

man-made

30
Q

what type use is artifical satellite and how much orbit

A

type use satellite TV, orbit more frequently for others

31
Q

diagrame of artifical satellite

A

earth tiny crlce, aritifcal around

32
Q

what is geostationary satellite

A

orbit once every 24hrs always at earth at same part points

33
Q

what is made out of universe

A

billion of galaxies - energy and space matters

34
Q

from most distant galaxies what is wavelentgh

A

observed increase in wavelntgh of light

35
Q

example of astronomers on increase wavelentgh from distant galaxcies

A

1990s,astronomers were looking at the light emitted from different galaxies, deteced light from very distant galaxies

36
Q

what is red-shift

A

increase in wavelentgh of light from objects that are moving away from you

37
Q

redshift further away the galxies..

A

the faster they are moving, observe increased wavelength

38
Q

what does redshift tells us and causes

A

that the galaxies are moving away from each other, this cause light waves stretched and observed increase wavelentgh

39
Q

when is bigger redshift

A

when galaxies further away so galaxies are moving faster than closer galaxes

40
Q

what evidence does redshift provide and supprt

A

evidence universe is exanding and big bang theory support

41
Q

what is big bang theory

A

suggest that the universe began from a very small region that was extremely hot and dense

42
Q

since 1998 what does observation of supervoa suggest

A

that distant galaxies are receding(further away) ever faster

43
Q

what does astronomer suggest from universe growing

A

assume gravity would cause the expansion of universe to gradually slow down. However, observation of supernova show expanison rate increase

44
Q

what does scientist suggested about matter and energy

A

suggest universe contain matter and energy that we cant detect - calls it dark matter and dark energy

45
Q

planets in order

A

mercy, venus, earth, mars, jupiter, saturn, uranus, neptune

Physics Paper 2 (5 decks)

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