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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. 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.
Oort Cloud
Biologicla life created the recycling of nitrogen - co2 - and the production of oxygen. Oxygen is heavier so the atmosphere held onto it easier than hydrogen and helium.
Turn off Point
Negative - Diverge - Less than 1
2. A representation of the changes in color and brightness of an evolving protostar.
Electromagnetic Radiation
Degeneracy
Hyashi track
standard candle
3. Any class of objects with a uniform luminosity used to determine distance.
Asymptotic giant Branch Star
Halo
standard candle
Convection
4. The apparent magnitude a star would have if it were at a distance of 10 parsecs.
Absolute Magnitude
CMB
Open Cluster
Apollo asteroids
5. The particle horizon is the farthest we can see. It exists because the universe had a beginning and thus a definite age. Light from distances farther away from the particle horizon have not had time to reach us yet.
reflection star clusters
Particle Horizon
mass
Flat - Remain Parallel - Exactly 1
6. A small and dim but hot star.
White Dwarf
Dark Nebula
Electromagnetic Radiation: Gamma Ray
Sa spiral galaxy
7. 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
Eclipses of the Moons of Jupiter
blazar
Liquid metallic hydrogen
High Velocity Stars
8. 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
High Velocity Stars
Parsec
Gamma-ray Burst
least dense
9. Young clusters in disk are irregularly shaped since they have no time to relax into the rounder relaxed shape of globular clusters-will constantly be torn apart and assimilated.
Make up of the jovian planets
open star clusters
Differential Rotation
fewest moons
10. When the Sun is farthest north of the celestial equator (about June 22)
Summer Solstice
Kirkwood gaps
Flare
cosmic singularity
11. The distance between a lens and its focal plane
Focal Length
Jovian Planets
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
Eclipses of the Moons of Jupiter
12. The lens in a telescope used to determine the magnification
Galilean satellite
great dark spots
Jovian Planets
Eyepiece Lens
13. Matter that reveals itself only through its gravitational attraction.
Light Curve
Energy Level
dark matter
Metals
14. Small compact stars called white dwarfs can have material deposited on their surfaces. In time material heats up and explodes in surface nuclear reaction- star brightens - settles - repeats.
Geocentric
nova
Biologicla life created the recycling of nitrogen - co2 - and the production of oxygen. Oxygen is heavier so the atmosphere held onto it easier than hydrogen and helium.
Cassini division
15. The philosophical stand that says a simpler explanation is more likely to be correct than a complicated one.
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16. A point in the sky where meteors appear to come from during a shower
acceleration
Electromagnetic Radiation: X-Ray
radiant
Open - flat - and closed.
17. The science of measuring light energy by wavelength.
Galilean satellite
Terrestrial Planets
Spectroscopy
meteorite
18. The crust of a meteorite caused by its entry into Earth's atmosphere
Biologicla life created the recycling of nitrogen - co2 - and the production of oxygen. Oxygen is heavier so the atmosphere held onto it easier than hydrogen and helium.
Synchrotron Rotation
fusion crust
Turn off Point
19. A long-lived high-pressure bulge in Jupiter's southern hemisphere
E=mc2
resonance
great red spot
Granules
20. The science of measuring the apparent magnitudes of stars by imaging them through different filters.
Filament
rotation curve = dark matter?
Brown dwarf
Photometry
21. The lowest energy of an atom.
Ground State
Negative - Diverge - Less than 1
Ionization
Halo
22. The average distance between the Earth and the Sun (=1.5 x10^8km)
Astronomical Unit
Quasar
Triple Alpha rocess
Trojan asteroids
23. The process responsible for creating the arms of flocculent spiral galaxies
Stephen-Boltzman Law
Radiative Diffusion
Self-Propogating Star Formation
Biologicla life created the recycling of nitrogen - co2 - and the production of oxygen. Oxygen is heavier so the atmosphere held onto it easier than hydrogen and helium.
24. When massive objects bend space and time enough to create multiple images of an object located behind them
molecular clouds
density parameter
Gravitational Lens
belt
25. The name for the only seriously considered theory of the universe.
Big Bang
Color Index
homogeneous
Disk
26. All possible types of energy that can be emitted and absorbed by atoms.
self-propagating star formation
Gamma ray bursts
Photosphere
Electromagnetic Radiation
27. The gap etween saturn's A and B rings
Degeneracy
Plague
Cassini division
great dark spots
28. The temp at which a substance in the vacuum of space solidifies
Open Cluster
tectonics of Mars
condensation temperature
MOONS: roundest shape
29. Form honeycomb like patterns surrounding empty or nearly empty voids.
superclusters
The Local Group
Differential Rotation
Nowhere visible to us. If there are higher dimension then the center would be visible to someone who lives in one. If there are no higher dimensions then the center does not exist.
30. Venus
Thickest atmosphere
Active Optics
weight
accretion
31. A word meaning 'the same everywhere throughout.'
Largest diameter
chondrite
homogeneous
Zenith
32. Mercury
Parsec
Dark matter candidates
acceleration
most eccentric orbit
33. A measure of the ability of a telescope to see fine detail
Limb darkening
Emission Spectrum
Superior planets
Resolving Power
34. Either Io -Europa - Ganymede - or Callisto
Active Optics
Galilean satellite
Cosmological Principle
Hydrostatic Equilibrium
35. The ratio of the actual density of the universe to the critical density. (actual density divided by the critical density
Coronal Loop
High Velocity Stars
Chromosphere
density parameter
36. We can infer the absolute magnitude of pulsating variable stars by measuring their pulsation periods. The longer the pulsations - the greater their luminosities. We then again measure their apparent magnitudes - compare it with their absolute magnitu
Winter Solstice
Cassegrain Focus
Cepheid variables
most eccentric orbit
37. The amount an image is enlarged by a telescope
Magnification
Light: travels like a wave - detected like a particle
solar nebula
greehouse effects
38. In Ptolemy's geocentric solar system - the large circle on which a planet's epicycle moved around the Earth.
Meridian
meteoriod
semimajor axis
deferent
39. Light-flaky crust - convective currents cause it to wrinkle and bunch (1/5 of surface). uniform cratering suggests lack of weathering and tectonics. volcanoes are flat due to atmospheric pressure.
solar nebula
tectonics of Venus
Main Sequence
weight
40. Dying small mass stars lose their outer layers in a relatively gentle way - creating a round or bipolar nebula about the star (round like planets)
chondrite
general star population
MOONS: thickest atmosphere
planetary nebula
41. The point where an inferior planet is as far away from the sun as it can be (as seen from the Earth)
aphelion
Reflector
shape and color of SPIRAL galaxies
greatest elongation
42. What is the universe expanding into?
It does not have to expand into anything. It might just be that the 3 dimensions of space are getting bigger. It may also be that our 3 spatial dimensions are expanding into higher dimensions if such things exist.
Superior planets
Seeing
Limb darkening
43. A planet that is closer to the sun than the earth
H2 Regions
Liquid metallic hydrogen
inferior planets
Halo
44. Collections of young - hot stars
tectonics of Earth
OB Associations
nova
Radio Galaxy
45. The source of the force that is accelerating the expansion rate of the universe.
Halo
dark energy
asteroid
fewest moons
46. Cold aggregates of gas - large and contain a huge amount of matter - so cold that molecules stick together to form molecules.
tectonics of Mars
Filament
Atomic Number
molecular clouds
47. The Big Bang was not an explosion of matter into empty space - like the explosion of a bomb. Instead - it was an emergence of space and time filled with pure energy where before none of this was present. The point from which is emerged is called the
tectonics of Mars
Absolute Magnitude
The Big Bang Theory
Ole Roemer
48. 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
superclusters
Photon
Inverse Square Law
49. A push or a pull
force
Light Pollution
Inverse Square Law
Particle Horizon
50. 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
Asymptotic giant Branch Star
Electromagnetic Radiation: Ultraviolet Light
mass
jovian