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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. What do we think the actual fate of the universe will be and why do we think this?
fewest moons
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.
most eccentric orbit
Planck time
2. The distance a moon can be from a planet before shattering from tidal forces
Summer Solstice
roche limit
Parallax
Parsec
3. Plate tectonics due to thickness of crust and maintain their general form when they collide-where most volcanoes are.
radiation pressure
Bok Globule
tectonics of Earth
White Dwarf
4. Approximate speed of light in a vacuum
Neutron Star
Shepherd satellite
300000 KM/sec
Degeneracy
5. The lens that gathers the light in a refractor
Blackbody Curve
Radiative Diffusion
Galilean satellite
Objective Lens
6. Centered on the Earth
Geocentric
300000 KM/sec
Negative - Diverge - Less than 1
Spectroscopic parallax
7. The process responsible for creating the arms of flocculent spiral galaxies
Self-Propogating Star Formation
Trojan asteroids
mass
shape and color of ELLIPTICAL galaxies
8. The area behind a lens where images are resolved
Focal Plane
Largest diameter
Ecliptic
Largest diameter
9. Atmosphere blocks high energy wavelengths - atmosphere blurs optical radiation - atmosphere absorbs some radiation at all wavelengths even when it gets through.
Spectral Lines
great dark spots
3 reasons we orbit satellites to observe universe
weight
10. Mercury - Venus - Earth - Mars
superclusters
Light-Year
open star clusters
Terrestrial Planets
11. The imaginary sphere centered on the Earth that hols the stars.
bulge
Apollo asteroids
Celestial Sphere
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.
12. The projection of the Earth's equator onto the celestial sphere.
Celestial Equator
Objective Lens
zone
Galilean satellite
13. Material that shoots rapidly out into space. Flares cause Auroras
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.
Flare
chemical differentiation
Sunspots
14. What is the universe expanding into?
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.
Hydrostatic Equilibrium
Absolute Magnitude
Cosmological Principle
15. 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.
aurora
Kuiper belt
OB Associations
Particle Horizon
16. What Ole Roemer used to measure the speed of light in a vacuum
meteor
Stephen-Boltzman Law
Eclipses of the Moons of Jupiter
Io (jupiters moon)
17. Jupiter - Saturn - Uranus - Neptune
Ground State
conjunction
Jovian Planets
Pixel
18. What Ole Roemer used to measure the speed of light in a vacuum
Dwarf planets
Eclipses of the Moons of Jupiter
Stephen-Boltzman Law
Electromagnetic Radiation: Microwave
19. A planet that is closer to the sun than the earth
Color Index
inferior planets
Red Giant Branch Star
Sunspots
20. The relation that tells how light dims with distance.
CNO Cycle
Inverse Square Law
MOONS: thickest atmosphere
Planetary Nebula
21. When one side of a body always faces the planet it revolves around
synchronous rotation
Kirchhoff's Law
radiation dominated universe
Parallax
22. The mirror that gathers the light in a reflector
Dark matter is located at center of clusters - pulling the cluster members into faster orbits--dark matter gravity keeps objects in galxies bound.
Primary Mirror
Europa (Jupiters moon)
Main Sequence Stars
23. A crystalline patter found in iron meteorites
Red Giant Branch Star
Celestial Sphere
Umbra
widmanstatten pattern
24. The family of radiant energy that includes light as a subset
Cosmological Principle
acceleration
Electromagnetic Radiation
MOONS: larger than mercury
25. An entity that is likely in the nucleus of most - if not all - galaxies.
bulge
Meridian
protostar
supermassive black hole
26. The point directly overhead.
Flat - Flat
Wein's Law
Zenith
CCD
27. Either Io -Europa - Ganymede - or Callisto
Seeing
Galilean satellite
Liquid metallic hydrogen
Oort cloud
28. Theory virtually demands that the geometry of the universe be ______. Results of measuring lumps in the cosmic background radiation indicate that the universe geometry is ________.
meteorite
asteroid
Flat - Flat
gravity
29. Long - meandering cliff formed when a planet surface cools and shrinks
Open Cluster
Electron
Density Wave
scarp
30. A telescope that uses lenses to focus light
Convection
Refractor
nucleus
Main Sequence Stars
31. Neptune or uranus
Coldest surface
If it is in a denser medium - such as glass - it will move slower
Photometry
quasar
32. 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.
dark energy
Spectroscopic Parallax
Parallax
Jupiters red spot
33. A huge sphere of tenuous gas surrounding the nucleus of a comet
coma
Gamma-ray Burst
Radiative Diffusion
Photometry
34. Mercury and venus
mapping the structure of Milky Way disk
E=mc2
fewest moons
Convection
35. Moon in less than the angular diameter of the Sun.
Annular Eclipse
general star population
acceleration
Interstellar Extinction
36. Formed from slow rotating clouds - collapsed quicker - initial star formation rate is high but died out - older - little rotation - look redder
Interstellar Extinction
Cosmic Microwave Background (CMB)
density waves
shape and color of ELLIPTICAL galaxies
37. Extends to a distance of 50000AU. Same objects as in the Kuiper belt-when they fall in toward the sun they become comets. Debris from comets hitting the Earths atmosphere cause meteor showers.
Lagrangian Razor
Oort Cloud
Convection
Reflector
38. A star fusing hydrogen to helium in it's core
Main Sequence Stars
Void
Geocentric
Grand design spirals
39. The oldest terrain on the moon
synchrotron radiation
highlands
Apollo asteroids
Roundest orbit
40. Sa - Sb galaxies where two magnificent arms wind their way from nucleus out in a symmetrical manner.
Grand design spirals
Largest diameter
Hyashi track
Doppler Shift
41. That which is responsible for Jupiter's magnetic field
Liquid metallic hydrogen
How is winding dilemma solved?
A family of radiant energy- includes light
density
42. Small bulges - loosely wound - massive arms - arms have many H2 regions and look very lumpy
planetary nebula
Sc spiral galaxy
gravity
Synodic Day
43. The sinking of denser elements to the center of a young molten planet
Light Pollution
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
Thermal Equilibrium
chemical differentiation
44. The family of radiant energy that includes light as a subset
Absolute Magnitude
Electromagnetic Radiation
Wein's Law
Heliocentric
45. 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
fusion crust
terrestrial planet
Light Curve
46. A technique using computer-controlled mirrors to sharpen images distorted by the atmosphere
fastest rotation
Chandrasekhar Limit
Active Optics
Maria
47. N=are*Fp(Ne)(Fl)(Fi)(Fc)(L) N: number of civilizations possible to communicate with are*: rate solar-like stars are created Fp: fraction of stars with planets Ne: number of planets like ours Fl: fraction of planets with life Fi: intelligent life Fc:
Drake equation
Eyepiece Lens
Positive - Converge - Greater than 1
slowest rotation
48. Earth
Hipparchus
shape and color of SPIRAL galaxies
isotropic
Most dense
49. The line on an H-are diagram going from upper left to lower right where normal stars of different masses reside.
highlands
Spectroscopic parallax
Main Sequence
Flare
50. Hydrogen and helium (mainly)
Interstellar Extinction
Make up of the jovian planets
Interstellar Extinction
hottest surface
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