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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. Elliptical orbits that come inside orbit of the Earth.
slowest rotation
2 Reasons Why there are Supermassive Black holes at the center of every Galaxy
coma
Apollo asteroids
2. Moon in less than the angular diameter of the Sun.
AGN
Annular Eclipse
Grand design spirals
Parallax
3. A spread of light with an uninterrupted wavelength distribution of energy.
Continuous Spectrum
radiation dominated universe
critical density
Asymptotic giant Branch Star
4. 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.
High Velocity Stars
contrast northern lowlands and the southern highlands of mars...
Heliocentric
Planck time
5. The science of measuring light energy by wavelength.
Continuous Spectrum
Penumbra
Refractor
Spectroscopy
6. A term referring to Earth-like planets
Occam's razor
terrestrial planet
Density Wave
Flat - Flat
7. Earth
Most dense
Make up of the terrestrial planets
Bok Globule
Reflector
8. Radiation emitted when charged particles spiral rapidly in a magnetic field. come off of jets from black holes.
Doppler Shift
synchrotron radiation
most moons
acceleration
9. A very dense - highly populated cluster of galaxies
Rich Cluster
quarks
Make up of the jovian planets
Positive - Converge - Greater than 1
10. The name for the only seriously considered theory of the universe.
Big Bang
Quasar
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.
Electromagnetic Radiation: Microwave
11. A small and dim but hot star.
dark matter
density waves
White Dwarf
Plague
12. A technique using computer-controlled mirrors to sharpen images distorted by the atmosphere
Steady State Theory (Leads to Olber's Paradox)
Active Optics
Negative - Diverge - Less than 1
Stephen-Boltzman Law
13. A word meaning 'the same in all directions.'
Shepherd satellite
isotropic
Magnification
partile horizon
14. Mercury
most moons
MOONS: larger than mercury
least dense
thinnest atmosphere
15. Latin for 'cloud'. A word used to describe the collections of gas and dust in the Milky Way and other galaxies
Annular Eclipse
Molecular Clouds
zone
Nebula
16. Possible Fates of the Universe
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
greehouse effects
Hubble constant
The Big Bang Theory resolves Olber's Paradox
17. 1μm 100 nm
Plague
bulge
Grand design spirals
Electromagnetic Radiation: Visible Light
18. An object that may remain after a star explodes
Neutron Star
rotation curve=winding dilemma?
Plank's Law
Titus-Bode Law
19. A phenomenon seen when the Earth passes through the orbit of a burned out comet
Radio Galaxy
fusion crust
plate tectonics
meteor shower
20. Radiation given off by electrons accelerating in a magnetic field
fastest rotation
supernova
Synchrotron Rotation
Black Hole
21. The mix of pure photon energy that emerged at the start of the universe.
Ammonia - methane - and water
cosmic fireball
gravity
Flare
22. The high- temperatature outer layer of the sun
Corona
Olber's paradox
Synchrotron Rotation
Dark Nebula
23. The material from which the solar system formed
Vernal Equinox
The Big Bang Theory
Color Index
solar nebula
24. The entity responsible for spiral arms in grand-design spiral galaxies
Apollo asteroids
Convection
Density Wave
Reflector
25. The seasonal shifting of a nearby star's position relative to more distant objects.
Parallax
gravity
tectonics of Earth
Olber's paradox
26. Arcs of increased mass concentration that slow stars and gas down as they orbit through which cause the formation of stars.
great dark spots
density waves
anorthosite
chemical differentiation
27. A rock or iron specimen that has fallen from space
Planetary Nebula
meteorite
Seeing
Electromagnetic Radiation: Infrared
28. The seasonal shifting of a nearby star's position relative to more distant objects.
CMB
Parallax
MOONS: roundest shape
Flocculent spirals
29. The apparent magnitude a star would have if it were at a distance of 10 parsecs.
Absolute Magnitude
Cassini division
dark energy
Focal Plane
30. Sudden blasts of gamma radiation from a very distant galaxy caused possibly by a supernova explosion.
Gamma ray bursts
bulge
Corona
OB Associations
31. When the Sun is farthest south of the celestial equator (About December 22)
Light-Year
Winter Solstice
fusion crust
coma
32. The universe is isotropic - homogeneous - and without beginning or end in time and space. If the universe is truly homogeneous then every line of sight will eventually end on a galaxy. If it has existed forever then there has been enough time for lig
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33. A perfect absorber and radiator of electromagnetic radiation.
widmanstatten pattern
partile horizon
How is winding dilemma solved?
Blackbody
34. Moon in less than the angular diameter of the Sun.
Annular Eclipse
Instability strip
radio lobe
Atomic Number
35. Jupiter
inferior planets
Make up of the jovian planets
fastest rotation
Galilean satellite
36. A measure of the ability of a telescope to see fine detail
Active Optics
synchronous rotation
Spectroscopic Parallax
Resolving Power
37. Radiation given off by electrons accelerating in a magnetic field
Synchrotron Rotation
Gamma-ray Burst
Disk
3 reasons we orbit satellites to observe universe
38. A small spherical dark nebula
Kirchhoff's Law
The Big Bang Theory
mass
Bok Globule
39. Latin for 'cloud'. A word used to describe the collections of gas and dust in the Milky Way and other galaxies
Most dense
semimajor axis
meteor shower
Nebula
40. A small chunk of rock in space
Largest diameter
CNO Cycle
meteoriod
belt
41. Places in the asteroid belt - caused by resonance with Jupiter - where there are no asteroids
Kirkwood gaps
Seyfert galaxy
quarks
cosmic singularity
42. When massive objects bend space and time enough to create multiple images of an object located behind them
Instability strip
Gravitational Lens
Atomic Number
mare basalt
43. Very center of galaxy. suggestion of a black hole
terrestrial planet
planetesimal
nucleus
Resolving Power
44. The high- temperatature outer layer of the sun
Triple Alpha rocess
Corona
Plague
Plank's Law
45. That which is responsible for Jupiter's magnetic field
Plague
neutrino
Liquid metallic hydrogen
MOONS: roundest shape
46. When the Sun is farthest north of the celestial equator (about June 22)
Heliocentric
Negative - Diverge - Less than 1
plate tectonics
Summer Solstice
47. Is space infinitely large?
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48. A logarithmically scaled value for the measured brightness of a star.
Apparent Magnitude
SETI
Radiative Diffusion
Energy Level
49. Originially thought to be stars emitting radio radiation but are now concluded to be nuclei of distant galaxies (same as radio galaxies aka emit streams of material)
Red Giant Branch Star
quasar
chondrite
chondrite
50. The material from which the solar system formed
Terrestrial Planets
3 reasons we orbit satellites to observe universe
solar nebula
protostar