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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. Small moons that maintain the shape of rings around Saturn and Uranus
Main Sequence
Open - flat - and closed.
most eccentric orbit
Shepherd satellite
2. A method of finding a star's distance from its absolute magnitude and spectral type or color.
Spectroscopic Parallax
blazar
Triple Alpha rocess
Lagrangian Razor
3. Sudden blasts of gamma radiation from a very distant galaxy caused possibly by a supernova explosion.
Filament
Occam's razor
Gamma ray bursts
Hyashi track
4. The name for the only seriously considered theory of the universe.
isotropic
Big Bang
H2 Regions
contrast northern lowlands and the southern highlands of mars...
5. 10 nm 10^2 nm
Electromagnetic Radiation
Electromagnetic Radiation: X-Ray
plate tectonics
E=mc2
6. The amount an image is enlarged by a telescope
thinnest atmosphere
Magnification
Maria
Oort Cloud
7. A cool collection of gas and dust silhouetted against a brighter background of stars and/or gas
Dark Nebula
Hipparchus
Triple Alpha rocess
Annular Eclipse
8. When material is heated and moves taking the heat energy with it
E=mc2
Jovian Planets
dark energy
Convection
9. In Ptolemy's geocentric solar system - the small circle on which a planet moved.
epicycle
planetary nebula
superclusters
standard candle
10. The oldest grouping of stars - found in the galaxy halo
Jovian Planets
Globular Cluster
Metals
Parallax
11. A star that erratically and explosively brightens and dims
Nova
fusion crust
resonance
slowest rotation
12. The apparent path of the Sun through the stars on the celestial sphere.
We don't know. It might be but does not have to be.
Ecliptic
weight
Ground State
13. Form honeycomb like patterns surrounding empty or nearly empty voids.
Ganymede (Jupiter)
superclusters
Thermal Equilibrium
Chromosphere
14. 1μm 100 nm
E=mc2
Electromagnetic Radiation: Visible Light
Celestial Equator
resonance
15. In a CLOSED UNIVERSE - the curvature of space-time is _________. Parallel beams will converge/diverge/remain parallel (circle one). The density parameter - Ω0 - is _____.
Electromagnetic Radiation
interstellar dust
Positive - Converge - Greater than 1
Hydrostatic Equilibrium
16. When massive objects bend space and time enough to create multiple images of an object located behind them
Callisto (Jupiter)
nucleus
Vernal Equinox
Gravitational Lens
17. The point in its orbit where a planet is farthest from the sun
aphelion
Asymptotic giant Branch Star
Winter Solstice
chondrite
18. The relation that tells how light dims with distance.
Zenith
Inverse Square Law
Brown dwarf
Annular Eclipse
19. The apparent backward motion of a planet against the background of stars.
retrograde motion
Magnification
Spectroscopic parallax
Zenith
20. The surface of the sun
Electromagnetic Radiation: Visible Light
Photosphere
synchrotron radiation
Flat - Remain Parallel - Exactly 1
21. Orbit in Jupiters orbit
accretion disk
Positive - Converge - Greater than 1
A family of radiant energy- includes light
Trojan asteroids
22. 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
superclusters
Ole Roemer
self-propagating star formation
supernova
23. A subatomic particle with a negative charge. It creates light.
Triple Alpha rocess
Electron
Void
asteroid
24. When massive objects bend space and time enough to create multiple images of an object located behind them
scarp
Gravitational Lens
Dark Nebula
Sunspot cycle
25. Venus
Colestial Pole
Seeing
hottest surface
Spectroscopic Parallax
26. The most mass a white dwarf can have before collapsing to a neutron star
Electromagnetic Radiation: Gamma Ray
Spectroscopic parallax
roche limit
Chandrasekhar Limit
27. 10^2 nm 10^7 nm
Rich Cluster
mare basalt
Electromagnetic Radiation: Ultraviolet Light
Electromagnetic Radiation: Gamma Ray
28. A streak of light in the atmosphere
Sb spiral galaxy
meteor
Spectroscopic Parallax
Rich Cluster
29. When the Sun is farthest north of the celestial equator (about June 22)
Radiative Diffusion
Precession
Summer Solstice
Population 1 vs Population 2 stars
30. Neptune or uranus
Hyashi track
open star clusters
Zenith
Coldest surface
31. A quantity measuring the stability of the Earth's atmosphere
Celestial Sphere
Europa (Jupiters moon)
Seeing
Apollo asteroids
32. The dark - relativley smooth areas on the moon; Latin for sea
Open - flat - and closed.
Maria
The Big Bang Theory
Granules
33. A cloud of ionized hydrogen. Formed when young stars heat the surrounding gas
MOONS: thickest atmosphere
Photometry
HII Region
High Velocity Stars
34. The normal eastward movement of a planet against the background of hte distant stars.
Cepheid Variable
direct motion
force
300000 KM/sec
35. Venus
hottest surface
chondrite
Spectroscopy
Electromagnetic Radiation
36. A volume of space where few - if any - galaxies are located
Void
planetesimal
homogeneous
Degeneracy
37. The shadow area behind the Earth or Moon where the Sun is completely obscured.
inferior planets
fewest moons
slowest rotation
Umbra
38. 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
Particle Horizon
supernova
Sidereal Day
Ole Roemer
39. Saying that the sky should not get dark at night because all lines of sight end on a star meaning that the night sky should be ablaze BUT the big bang - because the universe had a beginning - says that the sky gets dark because out in space - galaxie
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40. The place in the sky that the Earth's axis points toward (can be either north or south)
Colestial Pole
Photometry
Flocculent spirals
radio galaxy
41. Sc galaxies
Flocculent spirals
radio lobe
shape and color of SPIRAL galaxies
Absolute Magnitude
42. The temp at which a substance in the vacuum of space solidifies
condensation temperature
meteorite
Chandrasekhar Limit
open star clusters
43. An evolved star - past the helium flash that is burning helium to carbon in it's cores
regolith
Rich vs poor clusters
Reflector
Horizontal Branch Star
44. Centered on the Earth
semimajor axis
Electromagnetic Radiation: Ultraviolet Light
A family of radiant energy- includes light
Geocentric
45. VENUS
Electromagnetic Radiation: Infrared
most eccentric orbit
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
deferent
46. The dark - relativley smooth areas on the moon; Latin for sea
Doppler Shift
Main Sequence
cosmological red shift
Maria
47. A star fusing hydrogen to helium in it's core
Hubble constant
Maria
great red spot
Main Sequence Stars
48. Matter that reveals itself only through its gravitational attraction.
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
SETI
dark matter
Meridian
49. The rotation of a star or planet at different speeds at its equator and poles
Pixel
Blackbody
differential rotation
MOONS: roundest shape
50. Hurricane-like vortex in southern-hemisphere winds to north and south blow in opposite directions which keep it spinning and with no subsurface features like mountians it persists.
Interstellar Extinction
Jupiters red spot
Focal Length
dark energy