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Test your basic knowledge |
Cosmology
Start Test
Study First
Subject
:
science
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. A method of finding a star's distance from its absolute magnitude and spectral type or color.
Parallax
cosmological principle
mass
Spectroscopic Parallax
2. Mercury - Venus - Earth - Mars
Density Wave
Terrestrial Planets
Big Crunch
gravity
3. Formed from slow rotating clouds - collapsed quicker - initial star formation rate is high but died out - older - little rotation - look redder
greehouse effects
How is winding dilemma solved?
shape and color of ELLIPTICAL galaxies
Particle Horizon
4. The apparent backward motion of a planet against the background of stars.
retrograde motion
Light: travels like a wave - detected like a particle
weight
The Big Bang Theory resolves Olber's Paradox
5. The point in its orbit where a planet is nearest the sun
comet
Perihelion
Rich Cluster
Synodic Day
6. The act of removing an electron from an atom.
Ionization
Kuiper belt
Cosmic Microwave Background
Coronal Loop
7. Disk dust grains are made of all the elements that are not in gaseous form in space which blocks starlight and causes interstellar extinction
Proton-proton chain
cosmic fireball
Prominence
interstellar dust
8. The organization of clusters of galaxies into sheets and strings
Supercluster
cosmic singularity
Convection
asteroid
9. The lens that gathers the light in a refractor
Disk
Differential Rotation
Pulsar
Objective Lens
10. A push or a pull
force
Parsec
Dwarf planets
AGN
11. A prominence seen against the disk of the sun
Filament
Planetary Nebula
Limb darkening
Electromagnetic Radiation: Radio
12. A star that has become a red giant for the second and final time. It is burning helium to carbon in a shell surrounding the core
semimajor axis
Active Optics
Asymptotic giant Branch Star
Red Giant Branch Star
13. The apparent path of the Sun through the stars on the celestial sphere.
tectonics of Mars
Ecliptic
Halo
H-are Diagram
14. A telescope that uses lenses to focus light
Terrestrial Planets
The Big Bang Theory resolves Olber's Paradox
Refractor
High and low pressure which stretch into bands due to the rapid differential rotation. deeper - darker colors are in the belts and zones are lighter
15. The process of acquiring material
Pulsar
accretion
Autumnal Equinox
Horizontal Branch Star
16. The mass of an object divided by its volume
Main Sequence
interstellar dust
Coldest surface
density
17. Old - pock marked - icy surface - interior is not differentiated - geologically dead - NOT ACTIVE SURFACE
differential rotation
Lagrangian Razor
Enke gap
Callisto (Jupiter)
18. The lowest energy of an atom.
Heliocentric
Ground State
Sunspots
Corona
19. Jupiter
aurora
bulge
Largest diameter
Olber's paradox
20. Jupiter
nova
Pixel
most moons
Thermonuclear Fusion
21. A small round distribution of gas surrounding a dying star
2 Reasons Why there are Supermassive Black holes at the center of every Galaxy
molecular clouds
Jovian Planets
Planetary Nebula
22. The law that describes the blackbody curve - and let to quantum mechanics.
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23. The entity from which the whole universe is postulated to have come from.
hottest surface
Most dense
cosmic singularity
critical density
24. Infinitely long -> 10 cm
standard candle
Dark Matter
Electromagnetic Radiation: Radio
scarp
25. The rotation period of the Earth measured relative to the stars.
Sidereal Day
mapping the structure of Milky Way disk
Halo
Ammonia - methane - and water
26. The location of a supermassive black hole
greehouse effects
Nucleus
chemical differentiation
AGN
27. When a planet lines up with the sun inthe sky
Atomic Number
conjunction
Open Cluster
In an expanding universe all galaxies see all other galaxies that are not gravitationally bound to them receding away. This is what we see in the Hubble Law. We infer that the Hubble law also holds true for all other galaxies.
28. A small and dim but hot star.
White Dwarf
Bok Globule
Most dense
blazar
29. Wave- only waves cause an interference pattern when passing through a double slit - particle- only particles deposit energy at specific locations (the way an image builds up on digital camera)
Eclipses of the Moons of Jupiter
Light: travels like a wave - detected like a particle
OB Associations
Supernova (You can be my supernova girl)
30. What do we think the actual fate of the universe will be and why do we think this?
Observations of distant type Ia supernovae indicate that the expansion of the universe is speeding up with time - not slowing down! So there must be a force causing this.
quarks
asteroid
weight
31. A fusion process in which a carbon atom transmutes to oxygen and back - creating a helium atom in the process
CNO Cycle
scarp
Terrestrial Planets
Ground State
32. A word meaning 'the same in all directions.'
radiant
Disk
Planetary Nebula
isotropic
33. Collections of young - hot stars
great dark spots
Thermonuclear Fusion
Spectral Lines
OB Associations
34. The family of radiant energy that includes light as a subset
Granules
radiation dominated universe
Electromagnetic Radiation
Gamma ray bursts
35. A collection of comets in the plane of the solar system - located beyond the orbit of Pluto
Main Sequence
Kuiper belt
Parallax
Astronomical Unit
36. Any class of objects with a uniform luminosity used to determine distance.
Apparent Magnitude
standard candle
H-are Diagram
cosmic fireball
37. The Greek philosopher responsible for making the stellar magnitude scale.
Clouds of sufuric acid (very inhospitable and brightest object in the sky) - process called greenhouse affect traps radiation making it 900 degrees at times - spins with retrograde rotation (sun rises in west) and takes 58.4 days for it to set. Thick
SETI
Negative - Diverge - Less than 1
Hipparchus
38. A star that blows itself apart
condensation temperature
quarks
Terrestrial Planets
Supernova (You can be my supernova girl)
39. Very center of galaxy. suggestion of a black hole
coma
nucleus
Inverse Square Law
H2 Regions
40. A streak of light in the atmosphere
Heliocentric
thinnest atmosphere
meteor
coma
41. Radiation emitted when charged particles spiral rapidly in a magnetic field. come off of jets from black holes.
synchrotron radiation
self-propagating star formation
Flat - Remain Parallel - Exactly 1
Sunspots
42. A highly variable galaxy nucleus of which BL Lac is one. Their light is highly energetic and their spectra are featureless. (face on)
rotation curve=winding dilemma?
jovian
cosmology
blazar
43. The lens in a telescope used to determine the magnification
Eyepiece Lens
MOONS: largest size
Annular Eclipse
Largest diameter
44. A distance measure determined by the shifting of a star against the background sky every 6 months.
The Big Bang Theory
Parsec
Titus-Bode Law
Cepheid Variable
45. Saying that the sky should not get dark at night because all lines of sight end on a star meaning that the night sky should be ablaze BUT the big bang - because the universe had a beginning - says that the sky gets dark because out in space - galaxie
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46. Mercury and venus
Summer Solstice
differential rotation
fewest moons
aphelion
47. The instant of time after the Big Bang when space and time obtained their characteristics. (t=10^-43 sec when gravity freezes out-instant when gravity started existing as a separate force)
Planck time
Asymptotic giant Branch Star
Globular Cluster
anorthosite
48. A cloud of ionized hydrogen. Formed when young stars heat the surrounding gas
Big Bang
HII Region
Poor Cluster
Maria
49. When the Sun moves from south to north across the celestial equator (about March 21)
Open - flat - and closed.
Cassegrain Focus
Vernal Equinox
Milky way Galaxy
50. The sinking of denser elements to the center of a young molten planet
Superior planets
Ionization
chemical differentiation
resonance