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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. If stars have diff orbital periods - than any arms formed by stars will wind into a tight spiral pattern (billion yrs or so)
supernova
rotation curve=winding dilemma?
self-propagating star formation
rotation curve = dark matter?
2. Any class of objects with a uniform luminosity used to determine distance.
Electromagnetic Radiation: Visible Light
Prominence
Coronal Loop
standard candle
3. The location in an H-are diagram of a star cluster - where stars have just left the main sequence. Used to estimate the cluster age.
Turn off Point
H-are Diagram
highlands
Electron
4. The opaque universe that existed for 300000 years after the Big Bang. (photons outnumbered nuclei by 1 billion to one - so less light)
A family of radiant energy- includes light
radiation dominated universe
planetary nebula
Sc spiral galaxy
5. A logarithmically scaled value for the measured brightness of a star.
Negative - Diverge - Less than 1
differential rotation
Apparent Magnitude
Reflector
6. Star speed at outer edge of galaxy should begin to diminish - but they dont so we guess that this means there is increasing force (aka dark matter)
deferent
Spectral Lines
Granules
rotation curve = dark matter?
7. Venus
interstellar dust
Roundest orbit
mare basalt
Hubble constant
8. The apparent path of the Sun through the stars on the celestial sphere.
Negative - Diverge - Less than 1
deferent
Seeing
Ecliptic
9. Mercury
protostar
Gamma-ray Burst
most eccentric orbit
meteoriod
10. A toroidal or donut-shaped collection of material attracted to a central body like a star or black hole. Dust around an object
accretion disk
difference between maria and highlands of the moon.
Dark matter is located at center of clusters - pulling the cluster members into faster orbits--dark matter gravity keeps objects in galxies bound.
E=mc2
11. A streak of light in the atmosphere
meteor
Interstellar Extinction
Limb darkening
Photosphere
12. The process of acquiring material
bulge
Sunspot cycle
accretion
blazar
13. The process responsible for creating the arms of flocculent spiral galaxies
Olber's paradox
Self-Propogating Star Formation
Wein's Law
Enke gap
14. When massive objects bend space and time enough to create multiple images of an object located behind them
critical density
Gravitational Lens
Red Giant Branch Star
Autumnal Equinox
15. A point in the sky where meteors appear to come from during a shower
radiant
Resolving Power
terrestrial planet
radiation dominated universe
16. A planet that is farther from the sun than the Earth is
Electromagnetic Radiation
Superior planets
Planetary Nebula
Autumnal Equinox
17. Light-colored high-pressure bands in Jupiter's atmosphere
zone
White Dwarf
asteroid
Prominence
18. The lens that gathers the light in a refractor
terrestrial planet
Objective Lens
least dense
Drake equation
19. Hydrogen and helium (mainly)
Electromagnetic Radiation: Radio
Olber's paradox
Make up of the jovian planets
weight
20. The layer of the sun just above the photosphere
Horizontal Branch Star
Degeneracy
Chromosphere
Spectroscopic Parallax
21. A measure of the ability of a telescope to see fine detail
Io (jupiters moon)
Granules
Resolving Power
fusion crust
22. Stars fromt he Halo that have drifted into the disk. as earth zooms past them in a faster orbit they appear to be going backward very fast
Thermonuclear Fusion
High Velocity Stars
MOONS: larger than mercury
radiation dominated universe
23. The source of the force that is accelerating the expansion rate of the universe.
Main Sequence Stars
Oort cloud
dark energy
Ground State
24. A star that erratically and explosively brightens and dims
Limb darkening
Chromosphere
cosmological red shift
Nova
25. The study of the universe as a whole.
epicycle
cosmology
Summer Solstice
Dark Nebula
26. A plot of star absolute magnitude verses spectral type.
H-are Diagram
Spectroscopy
Asymptotic giant Branch Star
quasar
27. An evolved star - past the helium flash that is burning helium to carbon in it's cores
Ganymede (Jupiter)
Metals
Photosphere
Horizontal Branch Star
28. Medium bulge - moderately would arms - arms have H2 regions in them and look sort of lumpy
Cepheid Variable
Wein's Law
Main Sequence
Sb spiral galaxy
29. Mercury
greatest elongation
general star population
thinnest atmosphere
Cassegrain Focus
30. The place in the sky that the Earth's axis points toward (can be either north or south)
H2 Regions
most moons
Colestial Pole
condensation temperature
31. The process similar to conduction by which energy moves from the solar core to the convective layer
Light: travels like a wave - detected like a particle
Radiative Diffusion
Reflector
planetary nebula
32. Comglomerates of ice and rock that orbit the sun in highly elliptical paths
Granules
most moons
mass
comet
33. Dying large-mass stars lose their outer layers in a violent explosion creating large - chaotic remnants. these brighten like nova but are so much brighter and only occur ONCE PER STAR
supernova
Largest diameter
Europa (Jupiters moon)
density
34. If stars have diff orbital periods - than any arms formed by stars will wind into a tight spiral pattern (billion yrs or so)
Shepherd satellite
Celestial Sphere
Globular Cluster
rotation curve=winding dilemma?
35. Venus
Steady State Theory (Leads to Olber's Paradox)
hottest surface
chondrite
superclusters
36. The imaginary sphere centered on the Earth that hols the stars.
Radio Galaxy
Celestial Sphere
chemical differentiation
Molecular Clouds
37. The part of the Milky way that has on-going star formation
cosmological red shift
Disk
mass
Milky way Galaxy
38. The apparent magnitude a star would have if it were at a distance of 10 parsecs.
Plank's Law
Absolute Magnitude
Olber's paradox
planetary nebula
39. Venus (retrograde)
chemical differentiation
If it is in a denser medium - such as glass - it will move slower
slowest rotation
MOONS: thickest atmosphere
40. The entity from which the whole universe is postulated to have come from.
mare basalt
cosmic singularity
Wein's Law
Neutron Star
41. A collection of comets in the plane of the solar system - located beyond the orbit of Pluto
supermassive black hole
Kuiper belt
Void
Dark matter candidates
42. A large and bright but cool star.
Sidereal Day
fastest rotation
aurora
Red Giant
43. A nearby galaxy with a quasar-like nucleus. closer but less bright than quasars-weaker
differential rotation
Seyfert galaxy
Colestial Pole
Make up of the terrestrial planets
44. The north-south line passing directly overhead through the zenith.
Jupiters red spot
Pixel
critical density
Meridian
45. Finding a star's absolute magnitude from it's placement on an HR diagram. After finding the absolute magnitude - we measure the apparent magnitude - for a distance modulus and use this to find the distance. This method is good for finding distances t
cosmological principle
Hipparchus
Spectroscopic parallax
Active Optics
46. Old - pock marked - icy surface - interior is not differentiated - geologically dead - NOT ACTIVE SURFACE
mass
Callisto (Jupiter)
Planck time
Eyepiece Lens
47. The sinking of denser elements to the center of a young molten planet
Big Bang
Electron
supernova
chemical differentiation
48. The final end state of an intermediate to high mass star. An entity in which all the electrons have been pushed into the protons.
Limb darkening
Big Bang
High Velocity Stars
Neutron Star
49. A high-pressure bulge in Neptune's southern hemisphere
Cosmic Microwave Background (CMB)
great dark spots
Kuiper belt
2 Reasons Why there are Supermassive Black holes at the center of every Galaxy
50. Disk dust grains are made of all the elements that are not in gaseous form in space which blocks starlight and causes interstellar extinction
interstellar dust
Poor Cluster
Sidereal Day
Electromagnetic Radiation: Infrared