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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. Formed rapidly - collapsed slower into disk shape - star birth rate is low but lasts longer and ongoing - contain higher mass blue stars.
shape and color of SPIRAL galaxies
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
Enke gap
critical density
2. A star fusing hydrogen to helium in it's core
Main Sequence Stars
Prominence
Milky way Galaxy
Limb darkening
3. Venus
radio lobe
Roundest orbit
greatest elongation
Sidereal Day
4. Why do Galaxies move very rapidly in the interiors of the dense clusters?
opposition
MOONS: most geologically active
Dark matter is located at center of clusters - pulling the cluster members into faster orbits--dark matter gravity keeps objects in galxies bound.
Olber's paradox
5. Poitns of gravitational stability in the orbit of a planet
Lagrangian Razor
Flocculent spirals
Kirchhoff's Law
Io (jupiters moon)
6. An energetic event taking place in the early universe
Gamma ray bursts
Gamma-ray Burst
Ground State
smallest diameter
7. Elliptical orbits that come inside orbit of the Earth.
Geocentric
Apollo asteroids
Celestial Equator
gravity
8. 30AU to 50Au from sun - consists of ancietn premordial objects made of frozen ice and dust-35000 objects or more that are larger than 100 km in diameter and many more smaller than this
Oort cloud
Kuiper belt
isotropic
Stephen-Boltzman Law
9. The name for the only seriously considered theory of the universe.
most moons
Electromagnetic Radiation: Gamma Ray
Big Bang
self-propagating star formation
10. Disk dust grains are made of all the elements that are not in gaseous form in space which blocks starlight and causes interstellar extinction
CNO Cycle
opposition
Differential Rotation
interstellar dust
11. When material is heated and moves taking the heat energy with it
tectonics of Venus
Kirkwood gaps
Supernova (You can be my supernova girl)
Convection
12. A nearby galaxy with a quasar-like nucleus. closer but less bright than quasars-weaker
Cosmological Principle
Hipparchus
weight
Seyfert galaxy
13. The rotation period of the Earth measured relative to the stars.
Sidereal Day
chemical differentiation
Blackbody Curve
rotation curve=winding dilemma?
14. A star without enough mass to begin hydrogen fusion
Flat - Remain Parallel - Exactly 1
planetary nebula
Spectral Lines
Brown dwarf
15. The final end state of a high mass star. .An entity for which gravity has completely overwhelmed all other forces of nature.
density waves
Black Hole
density parameter
E=mc2
16. The dimming of starlight by intervening dust
Interstellar Extinction
Magnification
reflection star clusters
MOONS: larger than mercury
17. Clouds of low density gas often found glowing faintly on either side of an AGN.
Cassini division
dark energy
Prominence
radio lobe
18. Mercury
epicycle
Sb spiral galaxy
asteroid
smallest diameter
19. A volume of space where few - if any - galaxies are located
Penumbra
Void
superclusters
Cassini division
20. A large - irregularly shaped rocky object orbiting the sun mostly between mars and jupiter. Left-over planetesimals
Roundest orbit
Void
asteroid
Cepheid Variable
21. Centered on the Earth
Geocentric
widmanstatten pattern
Milky way Galaxy
Granules
22. In Ptolemy's geocentric solar system - the small circle on which a planet moved.
Atomic Number
epicycle
greehouse effects
Photon
23. The mix of pure photon energy that emerged at the start of the universe.
Radio Galaxy
cosmic fireball
highlands
Jupiters red spot
24. 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
scarp
Geocentric
Black Hole
High Velocity Stars
25. The distance light travels in one year (=9.46x10^12km).
Light-Year
evidence of water on mars
greehouse effects
Pulsar
26. Is space infinitely large?
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27. A subatomic particle with a negative charge. It creates light.
Stephen-Boltzman Law
Electron
Pixel
Degeneracy
28. Ganymede and Titan
Shepherd satellite
homogeneous
Oort cloud
MOONS: larger than mercury
29. The entity responsible for spiral arms in grand-design spiral galaxies
Enke gap
Kirkwood gaps
Density Wave
Electromagnetic Radiation: Visible Light
30. A push or a pull
Filament
force
Electromagnetic Radiation
fewest moons
31. Rich= dense crowded cores of galaxies - poor= few members and a looser organization of galaxies
meteoriod
Radiative Diffusion
Rich vs poor clusters
Geocentric
32. Light scattered through the atmosphere that degrades astronomical images
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
Light Pollution
mare basalt
Heliocentric
33. Formed from slow rotating clouds - collapsed quicker - initial star formation rate is high but died out - older - little rotation - look redder
Spectroscopic Parallax
Hubble constant
Main Sequence Stars
shape and color of ELLIPTICAL galaxies
34. An element of a highly efficient - two-dimensional electronic light detector
matter dominated universe
tectonics of Mars
Pixel
dark matter
35. A measure of how an object resists accelerating when acted upon by a force. It is proportional the amount of matter in an object
Chromosphere
HII Region
E=mc2
mass
36. Ganymede
MOONS: largest size
Colestial Pole
Bok Globule
Terrestrial Planets
37. A telescope that uses mirrors to focus light
Reflector
SETI
Radio Galaxy
CNO Cycle
38. The rock that makes up the lunar maria
inferior planets
Umbra
mare basalt
Electromagnetic Radiation
39. Long - meandering cliff formed when a planet surface cools and shrinks
Parsec
Spectroscopic parallax
scarp
anorthosite
40. A measure of the seasonal shifting of a star's position against farther stars or galaxies. The closer the star - the greater is the angular distance it shifts. We use it to find distances to stars that are up to 1000 pc away.
Big Bang
Parallax
molecular clouds
self-propagating star formation
41. Saturn
Neutron Star
homogeneous
least dense
Electron
42. Arcs of increased mass concentration that slow stars and gas down as they orbit through which cause the formation of stars.
MOONS: roundest shape
MOONS: larger than mercury
Lagrangian Razor
density waves
43. A measure of the force of gravity on an object
weight
Geocentric
Horizontal Branch Star
SETI
44. The shadow behind the Earth or Moon where the Sun is partially obscured.
Penumbra
Red Giant
Chandrasekhar Limit
matter dominated universe
45. The science of measuring the apparent magnitudes of stars by imaging them through different filters.
Blackbody Curve
Steady State Theory (Leads to Olber's Paradox)
Particle Horizon
Photometry
46. Dark - reddish - low-pressure bands in Jupiter's atmosphere
homogeneous
belt
Degeneracy
quasar
47. A star that blows itself apart
Supernova (You can be my supernova girl)
E=mc2
Perihelion
Precession
48. A fusion process in which protons build together to form helium
partile horizon
Proton-proton chain
Electromagnetic Radiation: Ultraviolet Light
Hubble law
49. 10^2 nm 10^7 nm
Doppler Shift
Electromagnetic Radiation: Gamma Ray
Drake equation
OB Associations
50. The process that powers the sun and hydrogen bombs
Photon
Energy Level
Extrasolar Planet
Thermonuclear Fusion