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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 volume of space where few - if any - galaxies are located
radiation dominated universe
Black Hole
Void
gravity
2. The first rock-sized bodies that formed in the solar nebula from dust grains
Secondary Mirror
Sa spiral galaxy
chondrite
Nova
3. 1μm 100 nm
Electromagnetic Radiation: Visible Light
Occam's razor
Nowhere visible to us. If there are higher dimension then the center would be visible to someone who lives in one. If there are no higher dimensions then the center does not exist.
Electromagnetic Radiation: X-Ray
4. A plot of star absolute magnitude verses spectral type.
blazar
H-are Diagram
dark matter
Blackbody Curve
5. Any class of objects with a uniform luminosity used to determine distance.
Ammonia - methane - and water
synchrotron radiation
molecular clouds
standard candle
6. The mass of an object divided by its volume
fewest moons
density
Cosmological Principle
Cassini division
7. The point in its orbit where a planet is nearest the sun
Filament
Perihelion
Umbra
Maria
8. Either Io -Europa - Ganymede - or Callisto
conjunction
Objective Lens
Galilean satellite
Yes - frozen at the poles- remains protected from the suns rays
9. The name for the only seriously considered theory of the universe.
Kirkwood gaps
Big Bang
tectonics of Mars
acceleration
10. A cloud of ionized hydrogen. Formed when young stars heat the surrounding gas
Red Giant
Color Index
HII Region
Hubble constant
11. The point in its orbit where a planet is farthest from the sun
aphelion
hottest surface
Zenith
Dark Matter
12. The light produced when particles from the sun collide with atmospheric molecules
aurora
Geocentric
Roundest orbit
smallest diameter
13. The rock that makes up the lunar highlands
MOONS: roundest shape
greehouse effects
anorthosite
radiant
14. When massive objects bend space and time enough to create multiple images of an object located behind them
Ammonia - methane - and water
Thermonuclear Fusion
Population 1 vs Population 2 stars
Gravitational Lens
15. Light-flaky crust - convective currents cause it to wrinkle and bunch (1/5 of surface). uniform cratering suggests lack of weathering and tectonics. volcanoes are flat due to atmospheric pressure.
Focal Plane
Light-Year
tectonics of Venus
Sb spiral galaxy
16. The seasonal shifting of a nearby star's position relative to more distant objects.
Parallax
Kirchhoff's Law
Apollo asteroids
great dark spots
17. Large nebula consisting of very cold gas and dust
Molecular Clouds
Pulsar
Secondary Mirror
Maria
18. The study of the universe as a whole.
cosmology
MOONS: largest size
OB Associations
Cassegrain Focus
19. The relation that tells how light dims with distance.
Ole Roemer
Ionization
Drake equation
Inverse Square Law
20. A younger cluster of stars - found in the galaxy disk
Nebula
Convection
Open Cluster
AGN
21. Jupiter
Largest diameter
Granules
Open - flat - and closed.
deferent
22. Is there water on the moon?
Yes - frozen at the poles- remains protected from the suns rays
E=mc2
Spectral Lines
homogeneous
23. What causes the zones and belts on jupiter and saturn?
opposition
Gravitational Lens
Dark matter is located at center of clusters - pulling the cluster members into faster orbits--dark matter gravity keeps objects in galxies bound.
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
24. The projection of the Earth's equator onto the celestial sphere.
Celestial Equator
great red spot
Hydrostatic Equilibrium
Cosmic Microwave Background
25. The location in the Milky Way where stars orbit like a solid wheel
solar nebula
Bulge
Gamma-ray Burst
conjunction
26. 1-orbit aroudn the sun 2- are in hydrostatic equilibrium and 'mostly round' 3- have not cleared debris around its orbit 4- are not satellites
condensation temperature
Neutron Star
Dwarf planets
cosmic fireball
27. An evolved star - past the helium flash that is burning helium to carbon in it's cores
most moons
Horizontal Branch Star
Open Cluster
Meridian
28. The surface of the sun
Planetary Nebula
Photosphere
Halo
synchrotron radiation
29. Light-colored high-pressure bands in Jupiter's atmosphere
zone
Drake equation
Cosmic Microwave Background
H-are Diagram
30. The entity responsible for spiral arms in grand-design spiral galaxies
Photon
2 Reasons Why there are Supermassive Black holes at the center of every Galaxy
cosmology
Density Wave
31. 1μm 100 nm
Electromagnetic Radiation: Visible Light
Reflector
Cosmic Microwave Background (CMB)
greatest elongation
32. The particle horizon is the farthest we can see. It exists because the universe had a beginning and thus a definite age. Light from distances farther away from the particle horizon have not had time to reach us yet.
HII Region
Particle Horizon
density waves
nucleus
33. 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)
How is winding dilemma solved?
Objective Lens
Electromagnetic Radiation: Visible Light
quarks
34. The gap inthe outer portion of Saturn's A ring
Proton-proton chain
Shepherd satellite
Enke gap
Grand design spirals
35. Mercury
Sunspot cycle
smallest diameter
Largest diameter
tectonics of Earth
36. A measure of how an object resists accelerating when acted upon by a force. It is proportional the amount of matter in an object
Jovian Planets
mass
Light-Year
Electromagnetic Radiation: Radio
37. The lowest energy of an atom.
Ground State
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.
MOONS: thickest atmosphere
Dwarf planets
38. The process that powers the sun and hydrogen bombs
Thermonuclear Fusion
matter dominated universe
jovian
thinnest atmosphere
39. A small round distribution of gas surrounding a dying star
meteor shower
aphelion
Light-Year
Planetary Nebula
40. The material from which the solar system formed
isotropic
Cosmic Microwave Background
solar nebula
bulge
41. Very center of galaxy. suggestion of a black hole
MOONS: most geologically active
critical density
nucleus
Maria
42. The law stating that hotter blackbodies look bluer than cooler blackbodies.
43. A word meaning 'the same everywhere throughout.'
Interstellar Extinction
Electron
critical density
homogeneous
44. The part of the Milky way that has on-going star formation
Disk
Stephen-Boltzman Law
Secondary Mirror
Active Optics
45. A perfect absorber and radiator of electromagnetic radiation.
Electromagnetic Radiation: Infrared
belt
force
Blackbody
46. 1-orbit aroudn the sun 2- are in hydrostatic equilibrium and 'mostly round' 3- have not cleared debris around its orbit 4- are not satellites
Seyfert galaxy
cosmology
disk
Dwarf planets
47. The point where an inferior planet is as far away from the sun as it can be (as seen from the Earth)
Objective Lens
Light Pollution
Void
greatest elongation
48. A fusion process in which a carbon atom transmutes to oxygen and back - creating a helium atom in the process
Penumbra
nucleus
CNO Cycle
supermassive black hole
49. Formed from slow rotating clouds - collapsed quicker - initial star formation rate is high but died out - older - little rotation - look redder
shape and color of ELLIPTICAL galaxies
How is winding dilemma solved?
Atomic Number
Photosphere
50. A fusion process in which a carbon atom transmutes to oxygen and back - creating a helium atom in the process
Dark Matter
opposition
Stephen-Boltzman Law
CNO Cycle