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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 line on an H-are diagram going from upper left to lower right where normal stars of different masses reside.
nova
terrestrial planet
cosmic singularity
Main Sequence
2. The faint glow of light left over from the Big Bang. cosmic microwave background are the photons that remain after the big bang that have not turned into matter.
CMB
anorthosite
radio galaxy
Light: travels like a wave - detected like a particle
3. The law that syas light energy from a blackbody increases as (temperature^4)
blazar
Spectroscopic parallax
planetesimal
Stephen-Boltzman Law
4. Small bulges - loosely wound - massive arms - arms have many H2 regions and look very lumpy
Parsec
Photon
Sc spiral galaxy
Celestial Sphere
5. A force exerted by reflecting sunlight
Big Bang
belt
radio galaxy
radiation pressure
6. Radiation emitted when charged particles spiral rapidly in a magnetic field. come off of jets from black holes.
Apparent Magnitude
synchrotron radiation
resonance
Degeneracy
7. Radiation given off by electrons accelerating in a magnetic field
gravity
Synchrotron Rotation
Europa (Jupiters moon)
Sc spiral galaxy
8. The science of measuring light energy by wavelength.
disk
resonance
Planck time
Spectroscopy
9. 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.
Europa (Jupiters moon)
mapping the structure of Milky Way disk
blazar
Electromagnetic Radiation: Ultraviolet Light
10. The material from which the solar system formed
solar nebula
Brown dwarf
Parallax
matter dominated universe
11. The philosophical stand that says a simpler explanation is more likely to be correct than a complicated one.
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12. A long-lived high-pressure bulge in Jupiter's southern hemisphere
Quasar
gravity
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
great red spot
13. 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
Prominence
Halo
Spectroscopic parallax
supernova
14. Either Io -Europa - Ganymede - or Callisto
Galilean satellite
Flat - Flat
H2 Regions
fastest rotation
15. The 11 or 22 period on the sun durin which sunspots increase - decrease - change polarity - increase and decrease again.
Light Pollution
Total Eclipse
Population 1 vs Population 2 stars
Sunspot cycle
16. Ganymede and Titan
Bulge
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.
Continuous Spectrum
MOONS: larger than mercury
17. Large bulge - tightly wound spiral arms - relatively few h2 regions and are smooth
shape and color of ELLIPTICAL galaxies
Autumnal Equinox
Hubble constant
Sa spiral galaxy
18. Distance from sun to nucleus- 8 kiloparsecs (26000 LY) - diameter of Milky way- 150000 LY - length for sun to orbit once around milky way- 250 million years
terrestrial planet
Light Gathering Power
Milky way Galaxy
Umbra
19. The organization of clusters of galaxies into sheets and strings
Objective Lens
Supercluster
The Big Bang Theory
The Local Group
20. Where is the center of the expansion
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.
meteor
2 Reasons Why there are Supermassive Black holes at the center of every Galaxy
Parallax
21. Electromagnetic Radiation
A family of radiant energy- includes light
The Big Bang Theory
We don't know. It might be but does not have to be.
OB Associations
22. A subatomic particle with a negative charge. It creates light.
Sunspot cycle
density
Electron
radiant
23. The organization of clusters of galaxies into sheets and strings
Void
Supercluster
Penumbra
Refractor
24. When the Sun is farthest south of the celestial equator (About December 22)
Plague
Bok Globule
Chromosphere
Winter Solstice
25. A long-lived high-pressure bulge in Jupiter's southern hemisphere
Geocentric
great red spot
Open Cluster
Refractor
26. Orbit in Jupiters orbit
thinnest atmosphere
Trojan asteroids
Sunspots
Thickest atmosphere
27. The lens that gathers the light in a refractor
Objective Lens
Supercluster
most moons
chemical differentiation
28. The average distance between the Earth and the Sun (=1.5 x10^8km)
MOONS: larger than mercury
Astronomical Unit
smallest diameter
Open Cluster
29. The part of the Milky way that has on-going star formation
radio galaxy
Disk
Horizontal Branch Star
Electromagnetic Radiation: Radio
30. A highly variable galaxy nucleus of which BL Lac is one. Their light is highly energetic and their spectra are featureless. (face on)
weight
Magnification
Rich vs poor clusters
blazar
31. The lowest energy of an atom.
Positive - Converge - Greater than 1
Drake equation
Ground State
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.
32. Jupiter
Parallax
Largest diameter
Hipparchus
Dark matter is located at center of clusters - pulling the cluster members into faster orbits--dark matter gravity keeps objects in galxies bound.
33. A point in the sky where meteors appear to come from during a shower
cosmological red shift
Enke gap
Inverse Square Law
radiant
34. 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:
Main Sequence
isotropic
Drake equation
chondrite
35. What causes the zones and belts on jupiter and saturn?
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
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.
Electromagnetic Radiation: Visible Light
Self-Propogating Star Formation
36. When one side of a body always faces the planet it revolves around
Planetary Nebula
synchronous rotation
Make up of the terrestrial planets
radio galaxy
37. The projection of the Earth's equator onto the celestial sphere.
Big Crunch
Convection
plate tectonics
Celestial Equator
38. Hot cells of gas that rise and fall in the hotosphere
hottest surface
Geocentric
Granules
Light Pollution
39. A high-pressure bulge in Neptune's southern hemisphere
SETI
Filament
least dense
great dark spots
40. Places in the asteroid belt - caused by resonance with Jupiter - where there are no asteroids
isotropic
Density Wave
Grand design spirals
Kirkwood gaps
41. A phenomenon seen when the Earth passes through the orbit of a burned out comet
meteor shower
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
Grand design spirals
Seyfert galaxy
42. 10^2 nm 10^7 nm
Electromagnetic Radiation: Gamma Ray
evidence of water on mars
Nebula
Electromagnetic Radiation: X-Ray
43. A star without enough mass to begin hydrogen fusion
disk
Brown dwarf
superclusters
Electron
44. The ratio of the actual density of the universe to the critical density. (actual density divided by the critical density
Radio Galaxy
Hipparchus
density parameter
deferent
45. Moon in less than the angular diameter of the Sun.
Magnification
Rich Cluster
Photon
Annular Eclipse
46. A highly variable galaxy nucleus of which BL Lac is one. Their light is highly energetic and their spectra are featureless. (face on)
Chromosphere
blazar
Plank's Law
CNO Cycle
47. Material that shoots rapidly out into space. Flares cause Auroras
MOONS: roundest shape
Meridian
asteroid
Flare
48. Dark areas on the sun that are cooler than the surrounding photosphere
cosmic singularity
CMB
Sunspots
Terrestrial Planets
49. The rock that makes up the lunar highlands
anorthosite
jovian
isotropic
Dark matter candidates
50. When material is heated and moves taking the heat energy with it
SETI
Convection
Molecular Clouds
slowest rotation