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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 study of the universe as a whole.
Chromosphere
CMB
Enke gap
cosmology
2. Milky way galaxy is a member - a small poor cluster-about 30 galaxies
White Dwarf
smallest diameter
The Local Group
Cassegrain Focus
3. The linear correlation between the rate of the expansion of the universe and distance. Says that as galaxies get farther away in space - the speed with which they recede from us increases. So we can measure the amount of recessional velocity and use
Red Giant Branch Star
Hubble law
meteoriod
accretion
4. 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)
belt
Hipparchus
Planck time
anorthosite
5. The place in the sky that the Earth's axis points toward (can be either north or south)
Colestial Pole
Neutron Star
widmanstatten pattern
comet
6. The science of measuring light energy by wavelength.
Spectroscopy
tectonics of Earth
Spectroscopic parallax
meteor shower
7. A term referring to the orbital character of stars near the Sun
Io (jupiters moon)
Degeneracy
Earth resurfaces itself due to erosion and plate tectonics - while the moon has neither.
Differential Rotation
8. The fate of the universe if it is closed. The universe expanding as much as possible and then retracting
Big Crunch
chondrite
Terrestrial Planets
Olber's paradox
9. The apparent magnitude a star would have if it were at a distance of 10 parsecs.
condensation temperature
Absolute Magnitude
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
cosmological principle
10. Saturn
least dense
Color Index
MOONS: larger than mercury
Magnification
11. Hot cells of gas that rise and fall in the hotosphere
Geocentric
Reflector
Granules
Sunspots
12. Either Io -Europa - Ganymede - or Callisto
Gamma-ray Burst
Galilean satellite
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.
Planck time
13. The law stating that hotter blackbodies look bluer than cooler blackbodies.
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14. The 11 or 22 period on the sun durin which sunspots increase - decrease - change polarity - increase and decrease again.
Precession
Gravitational Lens
Sunspot cycle
Focal Plane
15. The rotation period of the Earth measured relative to the Sun.
Pixel
Bok Globule
Synodic Day
Metals
16. A star without enough mass to begin hydrogen fusion
standard candle
Nucleus
Brown dwarf
Triple Alpha rocess
17. The law that describes the blackbody curve - and let to quantum mechanics.
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18. The gap inthe outer portion of Saturn's A ring
Enke gap
E=mc2
comet
Seyfert galaxy
19. Sa - Sb galaxies where two magnificent arms wind their way from nucleus out in a symmetrical manner.
Seyfert galaxy
radiation dominated universe
White Dwarf
Grand design spirals
20. The wavelengths where a specific element can absorb or emit light.
retrograde motion
Astronomical Unit
Spectral Lines
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.
21. The philosophical stand that says a simpler explanation is more likely to be correct than a complicated one.
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22. Moon in less than the angular diameter of the Sun.
great dark spots
Synodic Day
Annular Eclipse
Earth resurfaces itself due to erosion and plate tectonics - while the moon has neither.
23. 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.
Planck time
Jupiters red spot
Jovian Planets
Celestial Sphere
24. Plate tectonics due to thickness of crust and maintain their general form when they collide-where most volcanoes are.
comet
MOONS: thickest atmosphere
tectonics of Earth
Self-Propogating Star Formation
25. Highlands: rocks are made of lighter anorthosite (similar to old earth rocks) Maria: rocks made of heavy mare basalt (volcanic rock) everywhere else is loose regolith created by meteoric impact.
difference between maria and highlands of the moon.
Flocculent spirals
Cassini division
cosmological principle
26. The larger bodies that formed early in teh solar nebula that were chemically differentiated
Enke gap
Black Hole
Perihelion
planetesimal
27. The sinking of denser elements to the center of a young molten planet
fewest moons
Sc spiral galaxy
chemical differentiation
Sunspots
28. 1-orbit aroudn the sun 2- are in hydrostatic equilibrium and 'mostly round' 3- have not cleared debris around its orbit 4- are not satellites
Dwarf planets
Light: travels like a wave - detected like a particle
Ecliptic
Chromosphere
29. A cool collection of gas and dust silhouetted against a brighter background of stars and/or gas
Ganymede (Jupiter)
The Local Group
Dark Nebula
The Big Bang Theory resolves Olber's Paradox
30. The seasonal shifting of a nearby star's position relative to more distant objects.
Parallax
anorthosite
HII Region
accretion
31. A planet that is closer to the sun than the earth
hottest surface
inferior planets
smallest diameter
Dark Matter
32. Very center of galaxy. suggestion of a black hole
nucleus
weight
Poor Cluster
planetary nebula
33. A measure of the force of gravity on an object
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.
radiation dominated universe
weight
CNO Cycle
34. Extremely round - lots of liquid water - ice rafts on surface ACTIVE SURFACE
Electromagnetic Radiation: X-Ray
highlands
Europa (Jupiters moon)
meteor shower
35. Mercury
most eccentric orbit
dark energy
Sc spiral galaxy
radio galaxy
36. 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
The Local Group
Electromagnetic Radiation: Infrared
radio galaxy
High Velocity Stars
37. Light scattered through the atmosphere that degrades astronomical images
Callisto (Jupiter)
Light Pollution
Hipparchus
Sa spiral galaxy
38. The distance light travels in one year (=9.46x10^12km).
Nova
aurora
Light-Year
inferior planets
39. A prominence seen against the disk of the sun
weight
Filament
dark energy
synchronous rotation
40. In Ptolemy's geocentric solar system - the small circle on which a planet moved.
conjunction
epicycle
Superior planets
differential rotation
41. The surface of the sun
Red Giant Branch Star
Yes - frozen at the poles- remains protected from the suns rays
Photosphere
Globular Cluster
42. Earth
Heliocentric
Photon
Most dense
Cassegrain Focus
43. The lens in a telescope used to determine the magnification
supermassive black hole
Light Curve
Make up of the jovian planets
Eyepiece Lens
44. Any change in the speed or direction of an object's motion
Perihelion
acceleration
Secondary Mirror
Globular Cluster
45. Rich= dense crowded cores of galaxies - poor= few members and a looser organization of galaxies
Black Hole
Rich vs poor clusters
Electromagnetic Radiation: Ultraviolet Light
Convection
46. The location of a supermassive black hole
Population 1 vs Population 2 stars
acceleration
Nucleus
Neutron Star
47. Matter that reveals itself only through its gravitational attraction.
reflection star clusters
Electromagnetic Radiation: Infrared
dark matter
Eclipses of the Moons of Jupiter
48. The lens that gathers the light in a refractor
Colestial Pole
widmanstatten pattern
Objective Lens
Apparent Magnitude
49. An element of a highly efficient - two-dimensional electronic light detector
Pixel
comet
Nova
standard candle
50. When massive objects bend space and time enough to create multiple images of an object located behind them
Gravitational Lens
Flat - Remain Parallel - Exactly 1
Cosmological Principle
radio lobe