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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. When one side of a body always faces the planet it revolves around
synchronous rotation
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
Gravitational Lens
Supernova (You can be my supernova girl)
2. Young clusters in disk are irregularly shaped since they have no time to relax into the rounder relaxed shape of globular clusters-will constantly be torn apart and assimilated.
H-are Diagram
open star clusters
general star population
matter dominated universe
3. The lens in a telescope used to determine the magnification
Eyepiece Lens
OB Associations
direct motion
highlands
4. Medium bulge - moderately would arms - arms have H2 regions in them and look sort of lumpy
Electromagnetic Radiation
Globular Cluster
Sb spiral galaxy
conjunction
5. When particles are compressed to an unnatural state where their pressure is not related to their temperature
Prominence
Particle Horizon
Degeneracy
The Big Bang Theory
6. Any class of objects with a uniform luminosity used to determine distance.
SETI
Thermal Equilibrium
Proton-proton chain
standard candle
7. The name for the only seriously considered theory of the universe.
radiant
Big Bang
molecular clouds
cosmological red shift
8. Stars fromt he Halo that have drifted into the disk. as earth zooms past them in a faster orbit they appear to be going backward very fast
Brown dwarf
Photon
jovian
High Velocity Stars
9. The most mass a white dwarf can have before collapsing to a neutron star
Galilean satellite
Open Cluster
Chandrasekhar Limit
shape and color of SPIRAL galaxies
10. 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
disk
belt
Hipparchus
condensation temperature
11. In Ptolemy's geocentric solar system - the small circle on which a planet moved.
The Big Bang Theory
Colestial Pole
epicycle
MOONS: thickest atmosphere
12. A cool collection of gas and dust silhouetted against a brighter background of stars and/or gas
Dark Nebula
Electromagnetic Radiation
Turn off Point
Black Hole
13. An empirical scheme for predictin ghe orbital distances of planets
condensation temperature
Titus-Bode Law
Cepheid Variable
Flocculent spirals
14. The distance between a lens and its focal plane
How is winding dilemma solved?
Extrasolar Planet
disk
Focal Length
15. The rotation period of the Earth measured relative to the Sun.
great dark spots
Dark matter candidates
Synodic Day
Umbra
16. The oldest part of the Milky Way
Horizontal Branch Star
resonance
Seyfert galaxy
Halo
17. The elementary building blocks from which protons and neutrons are formed.
Seeing
quarks
Penumbra
meteorite
18. The process of acquiring material
evidence of water on mars
accretion
density
Planetary Nebula
19. In what chemical form are jupiters nitrogen - carbon and oxygen?
Ammonia - methane - and water
Superior planets
synchronous rotation
hottest surface
20. A very low mass particle formed in solar fusion reactions that reacts only weakly with matter
Electromagnetic Radiation
neutrino
Light Pollution
Neutron Star
21. The point where a superior planet is as far away from the sun as it can be (as seen from the Earth)
zone
tectonics of Venus
Trojan asteroids
opposition
22. In a CLOSED UNIVERSE - the curvature of space-time is _________. Parallel beams will converge/diverge/remain parallel (circle one). The density parameter - Ω0 - is _____.
Refractor
Enke gap
Positive - Converge - Greater than 1
accretion disk
23. A planet orbiting about a distant star
Spectroscopic Parallax
homogeneous
meteor shower
Extrasolar Planet
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)
Zenith
How is winding dilemma solved?
Thickest atmosphere
Eclipses of the Moons of Jupiter
25. The lowest energy of an atom.
Galilean satellite
inferior planets
Ground State
dark energy
26. All possible types of energy that can be emitted and absorbed by atoms.
Earth resurfaces itself due to erosion and plate tectonics - while the moon has neither.
Electromagnetic Radiation
Photon
radio lobe
27. The organization of clusters of galaxies into sheets and strings
evidence of water on mars
Degeneracy
isotropic
Supercluster
28. 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)
scarp
AGN
MOONS: most geologically active
Doppler Shift
29. Places in the asteroid belt - caused by resonance with Jupiter - where there are no asteroids
A family of radiant energy- includes light
Blackbody
Kirkwood gaps
H2 Regions
30. When the Sun moves from south to north across the celestial equator (about March 21)
Vernal Equinox
Heliocentric
disk
Precession
31. The Big Bang was not an explosion of matter into empty space - like the explosion of a bomb. Instead - it was an emergence of space and time filled with pure energy where before none of this was present. The point from which is emerged is called the
MOONS: larger than mercury
The Big Bang Theory
Galilean satellite
direct motion
32. 10 nm 10^2 nm
Electromagnetic Radiation: X-Ray
Dark matter is located at center of clusters - pulling the cluster members into faster orbits--dark matter gravity keeps objects in galxies bound.
Red Giant Branch Star
Emission Spectrum
33. Sc galaxies
Cepheid variables
molecular clouds
Flocculent spirals
coma
34. The point in its orbit where a planet is farthest from the sun
Emission Spectrum
aphelion
disk
opposition
35. Small moons that maintain the shape of rings around Saturn and Uranus
Shepherd satellite
resonance
terrestrial planet
Yes - frozen at the poles- remains protected from the suns rays
36. The wavelengths where a specific element can absorb or emit light.
weight
Limb darkening
standard candle
Spectral Lines
37. What do we think the actual fate of the universe will be and why do we think this?
mass
Particle Horizon
Observations of distant type Ia supernovae indicate that the expansion of the universe is speeding up with time - not slowing down! So there must be a force causing this.
Hydrostatic Equilibrium
38. 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)
Big Bang
H2 Regions
Electromagnetic Radiation: Infrared
Shepherd satellite
39. Possible Fates of the Universe
Differential Rotation
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
Atomic Number
Zenith
40. The gap etween saturn's A and B rings
Cassini division
Gamma ray bursts
radiant
Ionization
41. The material from which the solar system formed
solar nebula
asteroid
general star population
cosmological principle
42. A two-filter measure of the color - and hence temperature - of a star.
terrestrial planet
Dark matter is located at center of clusters - pulling the cluster members into faster orbits--dark matter gravity keeps objects in galxies bound.
Color Index
Filament
43. The point where an inferior planet is as far away from the sun as it can be (as seen from the Earth)
Prominence
greatest elongation
density parameter
Planck time
44. The state of having a balance between inward and outard pressures in a gas--the inward force from gravity is balanced by the outward force from heat.
Celestial Equator
Hydrostatic Equilibrium
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.
Cassegrain Focus
45. A logarithmically scaled value for the measured brightness of a star.
molecular clouds
Apparent Magnitude
protostar
Quasar
46. 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)
Light: travels like a wave - detected like a particle
open star clusters
Kirchhoff's Law
Light-Year
47. The state of having a balance between inward and outard pressures in a gas--the inward force from gravity is balanced by the outward force from heat.
AGN
Hydrostatic Equilibrium
Halo
Flat - Remain Parallel - Exactly 1
48. A particle of light.
Degeneracy
Photon
Focal Plane
Spectroscopy
49. Ganymede and Titan
MOONS: larger than mercury
Galilean satellite
Nebula
great red spot
50. The organization of clusters of galaxies into sheets and strings
Supercluster
tectonics of Venus
cosmic fireball
Kuiper belt