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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. Venus (retrograde)
slowest rotation
Seyfert galaxy
isotropic
radiation pressure
2. Rich= dense crowded cores of galaxies - poor= few members and a looser organization of galaxies
Photon
Rich vs poor clusters
Coldest surface
Perihelion
3. What causes the zones and belts on jupiter and saturn?
reflection star clusters
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
Photosphere
Hubble constant
4. Mercury
standard candle
most eccentric orbit
synchronous rotation
Rich vs poor clusters
5. Centered on the Earth
Continuous Spectrum
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.
Spectroscopic parallax
Geocentric
6. Moon in less than the angular diameter of the Sun.
Annular Eclipse
Light Pollution
gravity
radio galaxy
7. The imaginary sphere centered on the Earth that hols the stars.
Celestial Sphere
Steady State Theory (Leads to Olber's Paradox)
quarks
mare basalt
8. A word meaning 'the same everywhere throughout.'
Primary Mirror
Planetary Nebula
Ole Roemer
homogeneous
9. When material is heated and moves taking the heat energy with it
Geocentric
Convection
Umbra
Objective Lens
10. Is space infinitely large?
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11. Possible Fates of the Universe
Pulsar
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
mapping the structure of Milky Way disk
Nebula
12. The relation that tells how light dims with distance.
Negative - Diverge - Less than 1
tectonics of Venus
synchrotron radiation
Inverse Square Law
13. A location on an H-are Diagram where evolving stars pulsate
Electromagnetic Radiation: Ultraviolet Light
Instability strip
Geocentric
Ganymede (Jupiter)
14. The temp at which a substance in the vacuum of space solidifies
inferior planets
condensation temperature
Pixel
Spectroscopic parallax
15. The imaginary sphere centered on the Earth that hols the stars.
Drake equation
Continuous Spectrum
Light Curve
Celestial Sphere
16. A large and bright but cool star.
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
Molecular Clouds
Terrestrial Planets
Red Giant
17. The point in its orbit where a planet is nearest the sun
Perihelion
Cepheid variables
dark matter
superclusters
18. In a CLOSED UNIVERSE - the curvature of space-time is _________. Parallel beams will converge/diverge/remain parallel (circle one). The density parameter - Ω0 - is _____.
Parallax
tectonics of Venus
Positive - Converge - Greater than 1
Plank's Law
19. After stars form they pump light energy into surrounding gas causing it to heat up and glow (H2=ionized hydrogen - H1= neutral hydrogen in molcular couds)
H2 Regions
Coldest surface
Thermal Equilibrium
Interstellar Extinction
20. 100 nm 10 nm
nucleus
Electromagnetic Radiation: Ultraviolet Light
Globular Cluster
Terrestrial Planets
21. A word meaning 'the same everywhere throughout.'
semimajor axis
meteor
Flat - Remain Parallel - Exactly 1
homogeneous
22. The gap inthe outer portion of Saturn's A ring
Enke gap
synchrotron radiation
Astronomical Unit
Jupiters red spot
23. A streak of light in the atmosphere
meteor
tectonics of Earth
Plague
Kuiper belt
24. The nuclei of very distant galaxies. Likely a manifestation of supermassive black holes
Granules
Electromagnetic Radiation: Infrared
Quasar
cosmic fireball
25. A plot of star absolute magnitude verses spectral type.
H-are Diagram
dark matter
interstellar dust
greehouse effects
26. In an OPEN UNIVERSE - the curvature of space-time is ____ - Parallel beams will converge/diverge/remain parallel (circle one). The density parameter - Ω0 - is____.
Negative - Diverge - Less than 1
Disk
Self-Propogating Star Formation
Light-Year
27. The organization of clusters of galaxies into sheets and strings
Black Hole
The Local Group
terrestrial planet
Supercluster
28. As open clusters age - they push gas away but dust remains this can reflect light giving the cluster a blue-ish color. also called reflection nebula
reflection star clusters
Neutron Star
belt
Liquid metallic hydrogen
29. The 'edge' of the universe. Light beyond this has not reached us yet.
Continuous Spectrum
Dark matter is located at center of clusters - pulling the cluster members into faster orbits--dark matter gravity keeps objects in galxies bound.
nucleus
partile horizon
30. A faint - remarkably uniform distribution of radiation in space
thinnest atmosphere
White Dwarf
Dark matter candidates
Cosmic Microwave Background
31. Dark areas on the sun that are cooler than the surrounding photosphere
Neutron Star
Electromagnetic Radiation
Sunspots
Ammonia - methane - and water
32. The lens in a telescope used to determine the magnification
Eyepiece Lens
The Big Bang Theory
neutrino
Horizontal Branch Star
33. Large bulge - tightly wound spiral arms - relatively few h2 regions and are smooth
Sa spiral galaxy
MOONS: largest size
A family of radiant energy- includes light
Flocculent spirals
34. The location in the Milky Way where stars orbit like a solid wheel
Pulsar
Bulge
Europa (Jupiters moon)
Nucleus
35. Poitns of gravitational stability in the orbit of a planet
gravity
Apollo asteroids
Lagrangian Razor
belt
36. A high-pressure bulge in Neptune's southern hemisphere
great dark spots
Halo
synchrotron radiation
Spectral Lines
37. The study of the universe as a whole.
cosmology
Yes - frozen at the poles- remains protected from the suns rays
accretion disk
Photometry
38. The projection of the Earth's equator onto the celestial sphere.
Celestial Equator
greehouse effects
Dark matter is located at center of clusters - pulling the cluster members into faster orbits--dark matter gravity keeps objects in galxies bound.
Parallax
39. A galaxy sending out a stream of material from its nucleus
Radio Galaxy
Stephen-Boltzman Law
widmanstatten pattern
Quasar
40. The source of the force that is accelerating the expansion rate of the universe.
Hubble constant
dark energy
Spectroscopy
Filament
41. Why do Galaxies move very rapidly in the interiors of the dense clusters?
Particle Horizon
Wein's Law
Chandrasekhar Limit
Dark matter is located at center of clusters - pulling the cluster members into faster orbits--dark matter gravity keeps objects in galxies bound.
42. Wave- only waves cause an interference pattern when passing through a double slit - particle- only particles deposit energy at specific locations (the way an image builds up on digital camera)
partile horizon
Particle Horizon
Light: travels like a wave - detected like a particle
Metals
43. All possible types of energy that can be emitted and absorbed by atoms.
Electromagnetic Radiation
Cassegrain Focus
Self-Propogating Star Formation
Olber's paradox
44. A faint - remarkably uniform distribution of radiation in space
Metals
Differential Rotation
Cosmic Microwave Background
force
45. How is the Hubble Law consistent with an expanding universe?
coma
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.
Apollo asteroids
aurora
46. The act of removing an electron from an atom.
disk
Dark Matter
Ionization
tectonics of Earth
47. A two-filter measure of the color - and hence temperature - of a star.
aphelion
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
Color Index
cosmic fireball
48. After stars form they pump light energy into surrounding gas causing it to heat up and glow (H2=ionized hydrogen - H1= neutral hydrogen in molcular couds)
Flare
How is winding dilemma solved?
H2 Regions
Horizontal Branch Star
49. A cloud of ionized hydrogen. Formed when young stars heat the surrounding gas
HII Region
Thickest atmosphere
Absolute Magnitude
cosmic fireball
50. The distance a moon can be from a planet before shattering from tidal forces
meteorite
Interstellar Extinction
roche limit
Dark matter candidates