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Astronomy/Astrophysics Questionnaire Flashcards | StudBud
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Astronomy/Astrophysics Questionnaire
Astronomy/Astrophysics Questionnaire
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1
When does a star leave the main sequence?
When it turns into a black dwarf.
When it turns into a planetary nebula.
When it runs out of hydrogen to fuse.
When it runs out of helium to fuse.
2
Any object that orbits another object.
Satellite
Planet
3
If the sun were a black hole, would the Earth get sucked into it?
Yes.
No (a solar-mass black hole would exert no more gravitational pull)
4
Select more than one answer choices that is true regarding Dark Matter.
does not interact with the electromagnetic force
Dark Matter makes up most of the Universe
All of the above
nonluminous material that is postulated to exist in space
5
Which scientists was responsible for coining the phrase “Big Bang?”
Satyendra Nath Bose
Fred Hoyle
Albert Einstein
Edwin Hubble
6
What type of Galaxy is the Milky Way?
Spiral Galaxy
Elliptical Galaxy
Lenticular Galaxy
Irregular Galaxy
7
Spectroscopes can tell us all of these about except...
Elements that make up a star
Age of a star
Temperature of a star
Size of a star
8
Which aspect of a black hole is NOT infinite?
Mass
Density
Gravity
9
This person developed the heliocentric theory.
Galileo Gailei
Copernicus
Ptolemy
Aristotle
10
Our theory of the universe was confirmed by the discovery of:
cosmic microwave background radiation
the Doppler effect
Fusion
Heisenberg uncertainty principle
11
Theory of Relativity was formulated by
Stephen Hawking
Subrahmanyan Chandrasekhar
Ernest Rutherford
Albert Einstein
12
What competing forces keep main sequence stars at equilibrium?
Nuclear fusion and magnetism
Gravity and mass
Stars are unstable and not at equilibrium
Gravity and pressure from nuclear fusion
13
The four main fundamental forces are gravitational, electromagnetic, strong, and weak
False
True
14
The densest visible matter is found in...
white dwarfs
black dwarfs
black holes
neutron stars
15
Which statement is true about the Big Bang Theory? Choose all that apply.
It should appear longer because of a redshift.
the universe formed by the rapid expansion of space from 13.8 bya
The universe is expanding because light from faraway
16
Which of these exoplanets/planets are the most coldest?
HD 189733 b
Upsilon Andromeda b
OGLE-2005-BLG-390L b
Uranus
17
What theory of the Universe did Aristotle believe in?
Vergocentrism
Geocentrism
Alphamanic theory
Heliocentrism
18
What does e=mc^2 stand for?
Energy equals mass times the speed of light squared
Energy equals magnetism to the power of Carbon squared
19
How many galaxies are there in the observable universe?
2,000,000,000
200,000,000,000
500,000,000
1,000,000
20
What does "geo-" mean?
Sun
Center
Earth
21
Which astronomer created laws of gravity and motion?
Issac Newton
Kepler
Brahe
22
Mira is in a giant section of the Hertzsprung–Russell diagram. What is the next step for Mira in its lifecycle?
supernova
cools to become a white dwarf
neutron star
condenses to become a black hole
23
Electrons orbit the nucleus rather like planets orbiting the Sun.
True
False
24
The radius of the observable universe is 46 billion light-years.
True
False
25
.This astronomer discovered that the orbit of each planet is an ellipse, or an oval shape, and not perfectly circular.
Kepler
Aristotle
Newton
Copernercius
26
Which of these planets is the largest?
Saturn
Neptune
Uranus
Jupiter
27
A region in black hole where curvature of space-time becomes infinite is classified as:
gravitational plurality
gravitational singularity
magnetic plurality
gravitational momentum
28
A typical black hole is always specified by .... (HINT; Describe a Black Hole)
a(curvature) singularity
a horizon
either a (culture) singularity or a horizon
a charge
29
In which of the following stages of a star, the gravitational force is maximum ?
Neutron star
Protostar
Black hole
Red giant star
30
What are the six out of eight epochs of the Big Bang in order?
Grandunified, lepton, quark, hadron, planck, electroweak
Lepton, Inflationary, Quark, Nuclear, electroweak, planck
Planck, Lepton, Grandunified, inflationary, electroweak, quark, hadron
31
Who first proposed that the galaxy was expanding?
Johannes Kepler
Edwin Hubble
Albert Enstein
James Clerk Maxwell
32
How do stars and planets form and evolve?
Stars form from an accumulation of heat and pressure.
Stars form from an accumulation of nitrogen and carbon.
Stars form from an accumulation of hydrogen and helium.
Stars form from an accumulation of gas and dust.
33
Which of the following statement is true for "black hole"?
Its temperature is equal to the temperature of the Sun
Its temperature is directly proportional to its density
Its temperature is inversely proportional to its density
It emits radiations in large number
34
Which of the following are in the correct order of size from largest to smallest?
galaxy, universe, planet, star
galaxy, universe, star, planet, moon
universe, galaxy, star, planet, comet
star, planet, comet, galaxy, moon
35
Two Indian born physicists who have been awarded Nobel Prize in Physics are
J.C. Bose and MN Saha
H.J. Bhabha and APJ Kalam
C.V. Raman and S Chandrashekar
S.N. Bose and H J Bhabha
36
What is a Gas Giant?
A planetary body with a size smaller than Mercury, but larger than Ceres
A planet with an orbit that falls within the star's habitable zone
a large planet of relatively low density consisting of hydrogen and helium
Earth-like planets made up of rocks or metals with a hard surface
37
What two stellar objects come after a red giant in the life cycle of stars?
Supergiant star and neutron star
Neutron star and black hole
Planetary nebula and white dwarfs
Supernova and neutron stars
38
What is the correct order for the formation of our solar system?
2,4,3,1
1,2,3,4
2,3,4,1
1,3,4,2
39
What is a redshift?
It is evidence of an expanding universe
It means an object is moving away from us
It means the object's light has had its frequency lowered
All of the above
40
A Black Hole is...
none of these
an ozone layer
a super surface of atmosphere
a super dense planetary material
41
How long does it take light from our Sun to reach Earth?
10 hours
3 seconds
364.77 days
8 minutes
42
Since the Sun is a yellow dwarf star, what would be ultimate fate of our Sun? HINT; Reflect on The Stellar Cycle
Red Giant
Stellar Blackhole
White Dwarf
Neutron Star
43
What type of star is our Sun?
G-type main-sequence star
K-type main-sequence star
Wolf–Rayet Star
Protostar
44
What two forces help planets stay in their orbits?
Gravity and Inertia
Doppler effect and Gravity
Inertia and Force
Gravity and Force
45
Sunlight requires nearly 25 seconds to reach Earth
True
False
46
What does F=G\frac{m_1m_2}{r^2} stand for?
Force, Gravitational Constant, Mass, And Distance
Force= Gravity, Mass and Distance
47
How much of The Milky Way can you see in a night sky?
1%
0.000003%
10%
0.1%
48
What evidence claims that galaxies are moving away from us?
background radiation
blue shift of He spectrum
red shift of H spectrum
blue shift of H spectrum
49
Light in one year travels 9,460,000,000,000 km.
False
True
50
What does LIGO stand for?
Lollapalooza I Gain Oddities
Luminiferous Interstellar Galatical Ozone
Laser Interferometer Gravitational-wave Observatory
Larry I Grew Oozes
51
What two things are required for nuclear fusion?
Hydrogen and Helium
Deuterium and Tritium (isotopes of hydrogen)
Uranium and Plutonium
Neutrinos and Energy
52
What is the Big Bang theory?
A theory about the universe condensing in the form of a primeval atom.
The popular television show.
A theory about how the universe began with a explosion of objects.
A theory about how time affects gravity.
53
When original mass of star is greater than 5 M(M= mass of the sun)
Black hole
Quasars
White dwarf
Nebula
54
In General Theory of Relativity, among the following waves propagate outward from their source and stretch and shrink is
Cosmic rays
Gravitational waves
Acaustic Waves
Electromagnetic waves
55
What is Special Relativity?
an explanation of how the universe is constantly expanding.
an explanation of how speed affects mass, time and space.
56
'Black holes' refers to...
Collapsing object of high density
Collapsing object of low density
Holes occurring in heavenly bodies
Bright spots on the sun
57
What are Trans-Neptunian objects?
any minor planet in the Solar System that orbits the Sun (i.e., pluto, Eris
Objects who bear an neputnian appearance, but is actually not a gas giant.
58
How does the abundance of hydrogen and helium support the Big Bang Theory?
hydrogen and helium have many current uses for our planet and the universe
hydrogen and helium are in the same ratio throughout the universe.
Hydrogen and helium are elements on the Periodic Table
59
How fast do gravitational waves travel?
at the speed of light
instantaneously
faster than the speed of light
slower than the speed of light
60
In the equation, what does the E stand for?
Mass
Energy
Wavelength
Speed of Light
61
What does JWST stand for?
Jameson White Space Telescope
James Webb Space Telescope
62
What is the Hertzsprung–Russell diagram?
The relationship between the universe's size and density
the relationship between a star's temperature and its luminosity
63
What happened in the early universe?
Planets, galaxies, stars, and other celestial objects rapidly formed.
The cosmos was intensely hot and dense in the early seconds of formation.
64
What is in the center of the Heliocentric Model?
Sun
Earth
65
An eclipsing binary consists of two close stars moving in an orbit
True
False
66
Describe the Goldilocks zone.
a region around a planet that would have a moderate temperature range
range of orbits around a star within a planetary surface that support water
67
The universe is expanding! This means that:
All of the above
the universe must have started from a single point.
the universe is cooling down
all of the galaxies are spreading out.
