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Science > 11 omfg fucc space i hate you >:( > Flashcards

11 omfg fucc space i hate you >:( Flashcards

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1
Q

What is a powerful telescope in space rn & abilities

A

Hubble space telescope
Could see a coin from 725km away

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2
Q

What is a galaxy

A

Set of bodies consisting of millions of stars with gas and dust particles

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3
Q

What are the forms of galaxies

A

Spiral, elliptical, irregular

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4
Q

Where is the solar system

A

Milk Way galaxy

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5
Q

What are examples of spiral galaxy

A

Andromeda
Milky way

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6
Q

What is characteristics of spiral

A

Bright & big
branch that spirals
Old stars (middle) & protostar (outside)

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7
Q

What are example of elliptical galaxy

A

Ursa Major
Messier 87

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8
Q

What is characteristic of elliptical galaxy

A

Oval, large, old star (lower temp)

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9
Q

What is example of irregular galaxy

A

Small Magellanic Cloud
Large Magellanic Cloud

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10
Q

What is characteristics of irregular galaxies

A

Small & Protostar

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11
Q

What is the characteristics of Milky Way?

A

Medium large spiral galaxy (~ 10 ly)
Solar system - edge of one of the spiral arms (Orion arms)
Consists ~ 200 billion stars

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12
Q

Life cycle of star is according to

A

Nebular Hypothesis

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13
Q

What are stars formed by

A

Nebulae

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14
Q

What are nebulae

A

Large clouds of dust particles & gases (hydrogen & helium)

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15
Q

How is a globe formed

A

Gases & dust in nebula pulled by strong gravitational force

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16
Q

How is core formed

A

Strong gravitational force -> globe of gas shrink & compress -> very dense

17
Q

When will nuclear reaction take place

A

Temperature & pressure in core becomes too high
Hydrogen gas -> helium (Nuclear Fusion)
Huge amount of heat energy & light released

18
Q

What happens after the nuclear reaction

A

Core will shine & star is formed (protostar)

19
Q

When star expands, it becomes either a ?

A

Average star (medium-sized) - Sun
Massive star (large & super large)

20
Q

What is life process of medium-sized, large & super-large

A

MS star -> red giant -> white dwarf
L & SL star -> red giant -> supergiant -> supernova -> Neutron star (L) / Black hole (SL)

21
Q

A lot of heat generated in star causes

A

Heat up outermost layer of star -> hydrogen start to burn -> star expand -> appears red = red giant

22
Q

How does supernova occur

A

Red giant is big enough -> contracts quickly -> big explosion
Extremely bright & can be seen in daylight

23
Q

Why is it called a black hole

A

Light & any matter that enters cannot escape

24
Q

What is the characteristics to classify star

A

Colour
Size
Temperature
Distance
Brightness

25
Q

State the colour of star from least to most hot

A

Red
Orang
Yellow
Yellowish-white
White
Bluish-white
Blue

26
Q

what are really small stars called

A

Dwarf stars

27
Q

Brightness of star depends on?

A

Size, distance & surface temp

28
Q

What are the brightest stars in the sky

A
  1. Sirius - canis major
  2. Rigel - orion
29
Q

Why is sun a star and not a planet

A

Emits its own light

Science (21 decks)

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