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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. A toroidal or donut-shaped collection of material attracted to a central body like a star or black hole. Dust around an object
accretion disk
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
synchronous rotation
Nebula
2. Sa - Sb galaxies where two magnificent arms wind their way from nucleus out in a symmetrical manner.
Energy Level
Grand design spirals
Globular Cluster
High Velocity Stars
3. Sc galaxies where star formation and destruction is so rapid that supernova explosions are mainly responsible for compressing gas to create new stars.
rotation curve=winding dilemma?
Ammonia - methane - and water
self-propagating star formation
Density Wave
4. A younger cluster of stars - found in the galaxy disk
Winter Solstice
quasar
Nova
Open Cluster
5. The imaginary sphere centered on the Earth that hols the stars.
Ole Roemer
Ground State
Sunspots
Celestial Sphere
6. Comglomerates of ice and rock that orbit the sun in highly elliptical paths
Annular Eclipse
comet
Plank's Law
Cepheid variables
7. Long - meandering cliff formed when a planet surface cools and shrinks
scarp
Negative - Diverge - Less than 1
deferent
Light Curve
8. A galaxy emitting large amounts of energy at long wavelengths.
Plank's Law
Focal Plane
radio galaxy
Flat - Flat
9. What causes the zones and belts on jupiter and saturn?
Pulsar
Vernal Equinox
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
quasar
10. A spectrum of light with energy at only a few wavelengths.
Differential Rotation
Emission Spectrum
accretion
quasar
11. The amount an image is enlarged by a telescope
Cassegrain Focus
Hyashi track
Photosphere
Magnification
12. The larger bodies that formed early in teh solar nebula that were chemically differentiated
Energy Level
inferior planets
Neutron Star
planetesimal
13. Latin for 'cloud'. A word used to describe the collections of gas and dust in the Milky Way and other galaxies
Pulsar
Nebula
Zenith
quasar
14. In Ptolemy's geocentric solar system - the small circle on which a planet moved.
Void
Superior planets
epicycle
Meridian
15. Very center of galaxy. suggestion of a black hole
retrograde motion
isotropic
radio lobe
nucleus
16. An element of a highly efficient - two-dimensional electronic light detector
Pixel
Largest diameter
tectonics of Venus
Synchrotron Rotation
17. 10^2 nm 10^7 nm
Flat - Remain Parallel - Exactly 1
rotation curve=winding dilemma?
Superior planets
Electromagnetic Radiation: Gamma Ray
18. 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)
MOONS: roundest shape
Maria
Absorption Spectrum
How is winding dilemma solved?
19. Matter that reveals itself only through its gravitational attraction
fastest rotation
Penumbra
Dark Matter
Void
20. The rate of expansion of the universe.
Zenith
Hubble constant
Penumbra
E=mc2
21. The law stating that hotter blackbodies look bluer than cooler blackbodies.
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22. Small moons that maintain the shape of rings around Saturn and Uranus
How is winding dilemma solved?
Shepherd satellite
Prominence
Electromagnetic Radiation: Microwave
23. 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
Continuous Spectrum
CMB
Particle Horizon
The Big Bang Theory
24. A two-filter measure of the color - and hence temperature - of a star.
most moons
Color Index
Bulge
Summer Solstice
25. Matter so dense that even light cannot escape its gravity
Ionization
Nebula
Black Hole
Thickest atmosphere
26. Largest moon in solar system - two differenet types of terrain - darker terrain is older - NOT ACTIVE SURFACE
Neutron Star
Ganymede (Jupiter)
accretion disk
cosmology
27. Disk dust grains are made of all the elements that are not in gaseous form in space which blocks starlight and causes interstellar extinction
interstellar dust
Coronal Loop
critical density
jovian
28. The law stating that hotter blackbodies look bluer than cooler blackbodies.
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29. The rotation period of the Earth measured relative to the stars.
Proton-proton chain
roche limit
Sidereal Day
Pixel
30. A star that blows itself apart
Make up of the jovian planets
Supernova (You can be my supernova girl)
Gamma ray bursts
Flat - Remain Parallel - Exactly 1
31. A particle of light
Photon
widmanstatten pattern
radio galaxy
Apollo asteroids
32. 10 nm 10^2 nm
Dark Matter
hottest surface
planetary nebula
Electromagnetic Radiation: X-Ray
33. A change in the appearance of the sun at the edge of the solar disk
Globular Cluster
Nucleus
H2 Regions
Limb darkening
34. The point in its orbit where a planet is farthest from the sun
Electromagnetic Radiation
Convection
aphelion
Gamma ray bursts
35. A repeated - periodic push or pull capable of summing into a larger push or pull
resonance
mass
meteoriod
synchronous rotation
36. A galaxy sending out a stream of material from its nucleus
Radio Galaxy
3 reasons we orbit satellites to observe universe
Ground State
Seyfert galaxy
37. Formed from slow rotating clouds - collapsed quicker - initial star formation rate is high but died out - older - little rotation - look redder
Hubble law
general star population
Cosmological Principle
shape and color of ELLIPTICAL galaxies
38. Sulfurous volcanoes - pools of liquid sulfur - surface resembles cheese pizza ACTIVE SURFACE
Celestial Equator
Hyashi track
Io (jupiters moon)
Celestial Sphere
39. Small moons that maintain the shape of rings around Saturn and Uranus
Nebula
Cosmological Principle
Shepherd satellite
Globular Cluster
40. Dying large-mass stars lose their outer layers in a violent explosion creating large - chaotic remnants. these brighten like nova but are so much brighter and only occur ONCE PER STAR
Cepheid variables
Electromagnetic Radiation: Infrared
supernova
partile horizon
41. A particle of light.
Quasar
cosmological principle
superclusters
Photon
42. Either Io -Europa - Ganymede - or Callisto
Thickest atmosphere
Prominence
Molecular Clouds
Galilean satellite
43. Ganymede and Titan
MOONS: larger than mercury
Rich vs poor clusters
Yes - frozen at the poles- remains protected from the suns rays
coma
44. Elliptical orbits that come inside orbit of the Earth.
Zenith
molecular clouds
Stephen-Boltzman Law
Apollo asteroids
45. 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)
Doppler Shift
Void
Olber's paradox
contrast northern lowlands and the southern highlands of mars...
46. A cool collection of gas and dust silhouetted against a brighter background of stars and/or gas
Dark Nebula
The Big Bang Theory
Total Eclipse
mapping the structure of Milky Way disk
47. Any change in the speed or direction of an object's motion
acceleration
smallest diameter
Photon
MOONS: thickest atmosphere
48. The crust of a meteorite caused by its entry into Earth's atmosphere
Supernova (You can be my supernova girl)
Spectral Lines
Electron
fusion crust
49. A very dense - highly populated cluster of galaxies
Rich Cluster
Cepheid Variable
radio galaxy
shape and color of ELLIPTICAL galaxies
50. Collections of young - hot stars
Planetary Nebula
OB Associations
How is winding dilemma solved?
Enke gap
Can you answer 50 questions in 15 minutes?
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