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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. 10^2 nm 10^7 nm
Magnification
MOONS: most geologically active
Electromagnetic Radiation: Gamma Ray
Corona
2. Star speed at outer edge of galaxy should begin to diminish - but they dont so we guess that this means there is increasing force (aka dark matter)
hottest surface
direct motion
rotation curve = dark matter?
MOONS: larger than mercury
3. The class of all objects having high energy radiation coming from their nuclei. Active Galactic Nucleus- Blazars - Quasars - Radio and Emit synchrotron radiation
AGN
interstellar dust
most moons
Light Curve
4. The lens in a telescope used to determine the magnification
isotropic
Titus-Bode Law
Drake equation
Eyepiece Lens
5. A change in the wavelength of light caused by a motion between the observer and light (or wave) source (blue shift if getting closer - red shift if moving away)
Absorption Spectrum
Coronal Loop
Earth resurfaces itself due to erosion and plate tectonics - while the moon has neither.
Doppler Shift
6. 10^2 nm 10^7 nm
MOONS: most geologically active
Electromagnetic Radiation: Gamma Ray
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.
cosmological red shift
7. The law that syas light energy from a blackbody increases as (temperature^4)
mass
Make up of the terrestrial planets
Stephen-Boltzman Law
Magnification
8. Radiation emitted when charged particles spiral rapidly in a magnetic field. come off of jets from black holes.
isotropic
Filament
Earth resurfaces itself due to erosion and plate tectonics - while the moon has neither.
synchrotron radiation
9. A star that blows itself apart
Chandrasekhar Limit
supernova
Cosmological Principle
Supernova (You can be my supernova girl)
10. The act of removing an electron from an atom.
Absorption Spectrum
Ionization
Flat - Remain Parallel - Exactly 1
Main Sequence Stars
11. Small moons that maintain the shape of rings around Saturn and Uranus
Roundest orbit
Shepherd satellite
Void
quasar
12. A term referring to the orbital character of stars near the Sun
Parallax
Annular Eclipse
greehouse effects
Differential Rotation
13. A star that erratically and explosively brightens and dims
Nova
2 Reasons Why there are Supermassive Black holes at the center of every Galaxy
A family of radiant energy- includes light
Penumbra
14. Thick rigid crust - no longer has plate tectonics but still has convective hot spots that create earth-like volcanoes except that last for billions of years because of lack of tectonics.
Electromagnetic Radiation: Microwave
Black Hole
tectonics of Mars
radiant
15. The layer of the sun just above the photosphere
anorthosite
Cosmic Microwave Background (CMB)
Thickest atmosphere
Chromosphere
16. The state of having a balance between inflowing and outflowing heat-- the temp at every radial point is different but constant
Positive - Converge - Greater than 1
self-propagating star formation
direct motion
Thermal Equilibrium
17. The fate of the universe if it is closed. The universe expanding as much as possible and then retracting
Halo
standard candle
Particle Horizon
Big Crunch
18. The mirror that determines the focus configuration of a reflector
fewest moons
Open Cluster
conjunction
Secondary Mirror
19. Large nebula consisting of very cold gas and dust
Big Crunch
semimajor axis
Molecular Clouds
bulge
20. Flat disk with gas - dust - H2 regions - molecular clouds - dust young stars and remnants of old planetary nebula and supernova remnants. stars spin together with similar velocities called differential rotation
AGN
Enke gap
disk
Flat - Flat
21. Medium bulge - moderately would arms - arms have H2 regions in them and look sort of lumpy
Flat - Flat
Milky way Galaxy
Sb spiral galaxy
jovian
22. An object that may remain after a star explodes
Perihelion
Parallax
The Local Group
Neutron Star
23. The crust of a meteorite caused by its entry into Earth's atmosphere
Rich vs poor clusters
isotropic
fusion crust
most moons
24. Stars orvits do not define the spiral patterns - instead they are density waves that move at slower speeds (arms are defined by young O and B stars and gas clouds)
Brown dwarf
Penumbra
CNO Cycle
How is winding dilemma solved?
25. When one side of a body always faces the planet it revolves around
Apparent Magnitude
Big Crunch
synchronous rotation
Electromagnetic Radiation: X-Ray
26. A change in the appearance of the sun at the edge of the solar disk
mare basalt
MOONS: larger than mercury
Focal Plane
Limb darkening
27. The number of protons in an atom.
Jupiters red spot
Bok Globule
Atomic Number
cosmological principle
28. When a planet lines up with the sun inthe sky
Geocentric
MOONS: thickest atmosphere
Electromagnetic Radiation
conjunction
29. Venus (retrograde)
Thermonuclear Fusion
asteroid
MOONS: roundest shape
slowest rotation
30. The oldest terrain on the moon
highlands
Objective Lens
Occam's razor
Blackbody
31. A volume of space where few - if any - galaxies are located
Void
mapping the structure of Milky Way disk
Jupiters red spot
Electromagnetic Radiation: X-Ray
32. Rich= dense crowded cores of galaxies - poor= few members and a looser organization of galaxies
condensation temperature
rotation curve = dark matter?
highlands
Rich vs poor clusters
33. Cold aggregates of gas - large and contain a huge amount of matter - so cold that molecules stick together to form molecules.
How is winding dilemma solved?
molecular clouds
Gravitational Lens
meteor
34. Why do Galaxies move very rapidly in the interiors of the dense clusters?
3 reasons we orbit satellites to observe universe
Electromagnetic Radiation: Radio
Dark matter is located at center of clusters - pulling the cluster members into faster orbits--dark matter gravity keeps objects in galxies bound.
scarp
35. A very dense - highly populated cluster of galaxies
direct motion
Rich Cluster
Photosphere
Winter Solstice
36. 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.
retrograde motion
CMB
Bok Globule
planetary nebula
37. Any change in the speed or direction of an object's motion
Spectral Lines
Radio Galaxy
MOONS: roundest shape
acceleration
38. Sulfurous volcanoes - pools of liquid sulfur - surface resembles cheese pizza ACTIVE SURFACE
Europa (Jupiters moon)
Io (jupiters moon)
jovian
Radio Galaxy
39. The study of the universe as a whole.
cosmology
fewest moons
Degeneracy
Active Optics
40. Comglomerates of ice and rock that orbit the sun in highly elliptical paths
meteor
comet
Sa spiral galaxy
Coronal Loop
41. First accurately measured the speed of light in a vacuum
Radio Galaxy
radiation pressure
Ole Roemer
widmanstatten pattern
42. Flattened spherical distribution of old stars with some young stars too. 'hub' of Milky way - stars orbit with solid body speeds. Elongated into bar shape
meteorite
Shepherd satellite
bulge
contrast northern lowlands and the southern highlands of mars...
43. A highly variable galaxy nucleus of which BL Lac is one. Their light is highly energetic and their spectra are featureless. (face on)
Triple Alpha rocess
blazar
dark matter
Seyfert galaxy
44. The apparent magnitude a star would have if it were at a distance of 10 parsecs.
Thermonuclear Fusion
Cepheid Variable
Absolute Magnitude
aurora
45. An energetic event taking place in the early universe
Yes - frozen at the poles- remains protected from the suns rays
Gamma-ray Burst
Sa spiral galaxy
accretion
46. Consists of old red stars in slow orbits that plunge through disk and bulge. about 1% are old - round globular clusters.
Make up of the terrestrial planets
supernova
chemical differentiation
Halo
47. A large and bright but cool star.
density waves
Terrestrial Planets
Red Giant
Cepheid variables
48. Neptune or uranus
Density Wave
Coldest surface
Kirchhoff's Law
Plank's Law
49. A star that blows itself apart
Stephen-Boltzman Law
quarks
Supernova (You can be my supernova girl)
accretion
50. A cloud of ionized hydrogen. Formed when young stars heat the surrounding gas
HII Region
chondrite
Eclipses of the Moons of Jupiter
Main Sequence Stars