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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. Why do Galaxies move very rapidly in the interiors of the dense clusters?
Drake equation
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.
Dark matter is located at center of clusters - pulling the cluster members into faster orbits--dark matter gravity keeps objects in galxies bound.
Gravitational Lens
2. The larger bodies that formed early in teh solar nebula that were chemically differentiated
solar nebula
planetesimal
Supernova (You can be my supernova girl)
Open Cluster
3. Hurricane-like vortex in southern-hemisphere winds to north and south blow in opposite directions which keep it spinning and with no subsurface features like mountians it persists.
Perihelion
Roundest orbit
Jupiters red spot
Chromosphere
4. N=are*Fp(Ne)(Fl)(Fi)(Fc)(L) N: number of civilizations possible to communicate with are*: rate solar-like stars are created Fp: fraction of stars with planets Ne: number of planets like ours Fl: fraction of planets with life Fi: intelligent life Fc:
cosmology
Drake equation
Brown dwarf
Disk
5. The material from which the solar system formed
Refractor
solar nebula
Flare
blazar
6. Either Io -Europa - Ganymede - or Callisto
aphelion
Asymptotic giant Branch Star
Parallax
Galilean satellite
7. All possible types of energy that can be emitted and absorbed by atoms.
Electromagnetic Radiation
Titus-Bode Law
protostar
Limb darkening
8. The name for the only seriously considered theory of the universe.
Oort cloud
least dense
Big Bang
epicycle
9. Norhern lowlands- darker in color and have far fewer craters as if an ancient sea or ice field covered them. southern highlands- much higher in density of craters.
Most dense
contrast northern lowlands and the southern highlands of mars...
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.
Convection
10. If stars have diff orbital periods - than any arms formed by stars will wind into a tight spiral pattern (billion yrs or so)
rotation curve=winding dilemma?
Parallax
Light Pollution
Instability strip
11. The mirror that gathers the light in a reflector
Primary Mirror
Kuiper belt
Density Wave
Globular Cluster
12. A force exerted by reflecting sunlight
Flocculent spirals
radiation pressure
Vernal Equinox
coma
13. A subatomic particle with a negative charge. It creates light.
Electron
Magnification
Pulsar
inferior planets
14. The distance a moon can be from a planet before shattering from tidal forces
roche limit
Jovian Planets
How is winding dilemma solved?
Ammonia - methane - and water
15. The fusion process that turns three helium nuclei into a carbon nucleus
Hipparchus
Void
Triple Alpha rocess
inferior planets
16. The law that syas light energy from a blackbody increases as (temperature^4)
Objective Lens
Stephen-Boltzman Law
Roundest orbit
Pulsar
17. Radiation (possibly left over from the big bang) that fills the universe. Perfect black body spectrum and tells us a bit aout how galaxies are formed.
Cosmic Microwave Background (CMB)
Thermal Equilibrium
density waves
Electromagnetic Radiation: Gamma Ray
18. A logarithmically scaled value for the measured brightness of a star.
Apparent Magnitude
Turn off Point
great dark spots
Halo
19. 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
Cosmic Microwave Background
Absolute Magnitude
Bok Globule
Spectroscopic parallax
20. 1μm 100 nm
homogeneous
radio galaxy
Electromagnetic Radiation: Visible Light
radio galaxy
21. Sa - Sb galaxies where two magnificent arms wind their way from nucleus out in a symmetrical manner.
Red Giant
Grand design spirals
Particle Horizon
Jovian Planets
22. The point in its orbit where a planet is farthest from the sun
Occam's razor
protostar
Eyepiece Lens
aphelion
23. A representation of the changes in color and brightness of an evolving protostar.
Brown dwarf
Globular Cluster
Hyashi track
Thermonuclear Fusion
24. 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
Cassini division
High Velocity Stars
quarks
deferent
25. The rate of expansion of the universe.
Open Cluster
Light Gathering Power
Geocentric
Hubble constant
26. Heavier elements such as iron - silicon - magnesium - sulfer - nickel
difference between maria and highlands of the moon.
Make up of the terrestrial planets
Convection
evidence of water on mars
27. The high- temperatature outer layer of the sun
Corona
bulge
Doppler Shift
roche limit
28. IO
most moons
Limb darkening
Flat - Flat
MOONS: most geologically active
29. The crust of a meteorite caused by its entry into Earth's atmosphere
direct motion
Color Index
SETI
fusion crust
30. The distance a moon can be from a planet before shattering from tidal forces
most eccentric orbit
Kirchhoff's Law
roche limit
Cepheid variables
31. The layer of the sun just above the photosphere
E=mc2
Electromagnetic Radiation: Ultraviolet Light
Chromosphere
Corona
32. 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.
Inverse Square Law
Hubble law
Primary Mirror
Turn off Point
33. A long-lived high-pressure bulge in Jupiter's southern hemisphere
A family of radiant energy- includes light
Earth resurfaces itself due to erosion and plate tectonics - while the moon has neither.
dark matter
great red spot
34. 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
Spectroscopic parallax
Kuiper belt
CNO Cycle
density waves
35. 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
cosmology
AGN
Lagrangian Razor
36. Radiation given off by electrons accelerating in a magnetic field
Molecular Clouds
We don't know. It might be but does not have to be.
Synchrotron Rotation
Asymptotic giant Branch Star
37. A volume of space where few - if any - galaxies are located
Eclipses of the Moons of Jupiter
Continuous Spectrum
Big Crunch
Void
38. Old - pock marked - icy surface - interior is not differentiated - geologically dead - NOT ACTIVE SURFACE
superclusters
fewest moons
Callisto (Jupiter)
Cassegrain Focus
39. Latin for 'cloud'. A word used to describe the collections of gas and dust in the Milky Way and other galaxies
Total Eclipse
era of recombination
Nebula
force
40. Largest moon in solar system - two differenet types of terrain - darker terrain is older - NOT ACTIVE SURFACE
Ganymede (Jupiter)
Nebula
Perihelion
Electromagnetic Radiation: Gamma Ray
41. Formed from slow rotating clouds - collapsed quicker - initial star formation rate is high but died out - older - little rotation - look redder
widmanstatten pattern
MOONS: roundest shape
shape and color of ELLIPTICAL galaxies
Roundest orbit
42. Electromagnetic Radiation
quasar
A family of radiant energy- includes light
evidence of water on mars
Drake equation
43. An empirical scheme for predictin ghe orbital distances of planets
Degeneracy
Sunspot cycle
Flocculent spirals
Titus-Bode Law
44. When the Sun moves from south to north across the celestial equator (about March 21)
Vernal Equinox
Heliocentric
Cepheid Variable
Nebula
45. Europa
MOONS: roundest shape
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.
Gravity only pulls matter back together. Therefore - if gravity is the only force that operates on cosmic scales then the expansion of the universe should decrease with time. The critical density is the value of matter density sufficient to halt the
Superior planets
46. Largest moon in solar system - two differenet types of terrain - darker terrain is older - NOT ACTIVE SURFACE
Ole Roemer
Ganymede (Jupiter)
era of recombination
Penumbra
47. Dark - reddish - low-pressure bands in Jupiter's atmosphere
cosmic fireball
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.
blazar
belt
48. The temp at which a substance in the vacuum of space solidifies
condensation temperature
Particle Horizon
superclusters
Absorption Spectrum
49. A measure of the ability of a telescope to see fine detail
Rich Cluster
cosmological principle
cosmological red shift
Resolving Power
50. A distance measure determined by the shifting of a star against the background sky every 6 months.
hottest surface
Parsec
Chromosphere
Population 1 vs Population 2 stars