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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. A quantity measuring the stability of the Earth's atmosphere
Winter Solstice
Seeing
thinnest atmosphere
supermassive black hole
2. The cosmological principle is the assumption that the universe is isotropic and homogeneous.The Big Bang assumes it to be a correct principle so that what we observe is exactly like What is too far away to be observed.
Neutron Star
era of recombination
Cosmological Principle
meteoriod
3. The location of a supermassive black hole
Photon
Synchrotron Rotation
Nucleus
Zenith
4. The projection of the Earth's equator onto the celestial sphere.
Celestial Equator
Doppler Shift
Degeneracy
Main Sequence Stars
5. Matter that reveals itself only through its gravitational attraction.
Globular Cluster
dark matter
quasar
Kirkwood gaps
6. Either Io -Europa - Ganymede - or Callisto
Galilean satellite
Kirkwood gaps
Sunspots
Blackbody Curve
7. When the Sun is farthest south of the celestial equator (About December 22)
accretion
Winter Solstice
The Big Bang Theory
rotation curve=winding dilemma?
8. 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)
highlands
quasar
Dark matter candidates
Plague
9. The telescope configuration that has the focus placed at the back of the primary mirror
Cassegrain Focus
Convection
Plague
fusion crust
10. The location in the Milky Way where stars orbit like a solid wheel
MOONS: larger than mercury
Positive - Converge - Greater than 1
Electromagnetic Radiation: Infrared
Bulge
11. Dark - reddish - low-pressure bands in Jupiter's atmosphere
Rich Cluster
jovian
belt
Void
12. 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
Hubble law
Turn off Point
Winter Solstice
Black Hole
13. The science of measuring light energy by wavelength.
Spectroscopy
critical density
supermassive black hole
self-propagating star formation
14. A distance measure determined by the shifting of a star against the background sky every 6 months.
Big Crunch
Parsec
Magnification
meteor
15. The process responsible for creating the arms of flocculent spiral galaxies
greehouse effects
Self-Propogating Star Formation
density waves
Shepherd satellite
16. The point in its orbit where a planet is farthest from the sun
Perihelion
aphelion
superclusters
Electromagnetic Radiation: X-Ray
17. 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.
Electromagnetic Radiation: X-Ray
Degeneracy
contrast northern lowlands and the southern highlands of mars...
Turn off Point
18. Approximate speed of light in a vacuum
300000 KM/sec
Energy Level
Population 1 vs Population 2 stars
gravity
19. A plot of star absolute magnitude verses spectral type.
H-are Diagram
Resolving Power
The Big Bang Theory resolves Olber's Paradox
reflection star clusters
20. Distribution of dust (tells us disk is thin) - find distances to O&B stars and H2 regions (arms are sights of star formation and OB stars live and die at location of birth) -Milky way has four arms. Sun is in spur apart from arms.
dark matter
Electromagnetic Radiation: Visible Light
MOONS: most geologically active
mapping the structure of Milky Way disk
21. Light-colored high-pressure bands in Jupiter's atmosphere
zone
bulge
Flat - Remain Parallel - Exactly 1
Electromagnetic Radiation: Visible Light
22. The organized effort to find life elsewhere in the universe. (Search for Extra-Terrestrial Intelligence)
Bulge
SETI
Sunspot cycle
dark energy
23. The entity from which the whole universe is postulated to have come from.
mapping the structure of Milky Way disk
cosmic singularity
Electromagnetic Radiation: Microwave
synchronous rotation
24. Large bulge - tightly wound spiral arms - relatively few h2 regions and are smooth
Sa spiral galaxy
Neutron Star
Hubble law
Olber's paradox
25. The rate of expansion of the universe.
hottest surface
Secondary Mirror
differential rotation
Hubble constant
26. The place in the sky that the Earth's axis points toward (can be either north or south)
Colestial Pole
OB Associations
Nucleus
Hubble constant
27. Where is the center of the expansion
neutrino
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.
greehouse effects
Open - flat - and closed.
28. Form honeycomb like patterns surrounding empty or nearly empty voids.
planetary nebula
interstellar dust
superclusters
Winter Solstice
29. Orbit in Jupiters orbit
Instability strip
Big Crunch
Parsec
Trojan asteroids
30. Extends to a distance of 50000AU. Same objects as in the Kuiper belt-when they fall in toward the sun they become comets. Debris from comets hitting the Earths atmosphere cause meteor showers.
Absolute Magnitude
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.
retrograde motion
31. The distance between a lens and its focal plane
Focal Length
300000 KM/sec
Dark Matter
Resolving Power
32. A term referring to the orbital character of stars near the Sun
Differential Rotation
CNO Cycle
Oort cloud
OB Associations
33. Europa
matter dominated universe
Kuiper belt
MOONS: roundest shape
Chromosphere
34. Hot cells of gas that rise and fall in the hotosphere
radiation pressure
Granules
Gravitational Lens
scarp
35. A continuous spectrum of light missing energy at a few wave lengths.
Radiative Diffusion
Titus-Bode Law
Big Crunch
Absorption Spectrum
36. The slow wobble of the Earth on its rotation axis.
Ole Roemer
Precession
Kuiper belt
Earth resurfaces itself due to erosion and plate tectonics - while the moon has neither.
37. The organization of clusters of galaxies into sheets and strings
radiation dominated universe
Electromagnetic Radiation: Ultraviolet Light
Supercluster
Lagrangian Razor
38. Cold aggregates of gas - large and contain a huge amount of matter - so cold that molecules stick together to form molecules.
thinnest atmosphere
molecular clouds
Jovian Planets
Grand design spirals
39. Mercury
most eccentric orbit
Cosmological Principle
partile horizon
Thickest atmosphere
40. 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
nova
Trojan asteroids
supernova
Supernova (You can be my supernova girl)
41. 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.
cosmology
difference between maria and highlands of the moon.
great red spot
Interstellar Extinction
42. Mercury
thinnest atmosphere
blazar
open star clusters
difference between maria and highlands of the moon.
43. A galaxy emitting large amounts of energy at long wavelengths.
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
radio galaxy
OB Associations
Horizontal Branch Star
44. In Ptolemy's geocentric solar system - the large circle on which a planet's epicycle moved around the Earth.
White Dwarf
deferent
resonance
Focal Length
45. The source of the force that is accelerating the expansion rate of the universe.
Nebula
Flat - Remain Parallel - Exactly 1
Stephen-Boltzman Law
dark energy
46. A huge sphere of tenuous gas surrounding the nucleus of a comet
Titus-Bode Law
coma
tectonics of Earth
Energy Level
47. The Greek philosopher responsible for making the stellar magnitude scale.
Metals
The Big Bang Theory resolves Olber's Paradox
Hipparchus
Pixel
48. The equation that describes how matter equates with energy
Penumbra
Triple Alpha rocess
Secondary Mirror
E=mc2
49. A particle of light
Photon
Convection
Olber's paradox
Stephen-Boltzman Law
50. 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.
Yes - frozen at the poles- remains protected from the suns rays
Thermal Equilibrium
difference between maria and highlands of the moon.
Primary Mirror
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