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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. Galaxies whose nuclei emit jets of materil at high speeds. material comes from supermassive black holes
meteorite
Resolving Power
radio galaxy
anorthosite
2. That which is responsible for Jupiter's magnetic field
meteoriod
force
difference between maria and highlands of the moon.
Liquid metallic hydrogen
3. A toroidal or donut-shaped collection of material attracted to a central body like a star or black hole. Dust around an object
Halo
accretion disk
gravity
Europa (Jupiters moon)
4. A quantity measuring the stability of the Earth's atmosphere
Primary Mirror
chemical differentiation
Seeing
Granules
5. Originially thought to be stars emitting radio radiation but are now concluded to be nuclei of distant galaxies (same as radio galaxies aka emit streams of material)
Summer Solstice
evidence of water on mars
quasar
chemical differentiation
6. A rock or iron specimen that has fallen from space
opposition
meteorite
Astronomical Unit
Globular Cluster
7. A continuous spectrum of light missing energy at a few wave lengths.
weight
Inverse Square Law
dark matter
Absorption Spectrum
8. The place in the sky that the Earth's axis points toward (can be either north or south)
Primary Mirror
Ganymede (Jupiter)
Colestial Pole
A family of radiant energy- includes light
9. The gap etween saturn's A and B rings
Cassini division
Seeing
Hubble law
asteroid
10. The philosophical stand that says a simpler explanation is more likely to be correct than a complicated one.
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11. Is there water on the moon?
Stephen-Boltzman Law
In an expanding universe all galaxies see all other galaxies that are not gravitationally bound to them receding away. This is what we see in the Hubble Law. We infer that the Hubble law also holds true for all other galaxies.
Yes - frozen at the poles- remains protected from the suns rays
Europa (Jupiters moon)
12. Mercury
2 Reasons Why there are Supermassive Black holes at the center of every Galaxy
direct motion
thinnest atmosphere
Chromosphere
13. An evolved star - past the helium flash that is burning helium to carbon in it's cores
Horizontal Branch Star
Electron
Drake equation
widmanstatten pattern
14. Atmosphere blocks high energy wavelengths - atmosphere blurs optical radiation - atmosphere absorbs some radiation at all wavelengths even when it gets through.
3 reasons we orbit satellites to observe universe
Flare
Electromagnetic Radiation: X-Ray
Perihelion
15. Galaxies whose nuclei emit jets of materil at high speeds. material comes from supermassive black holes
radio galaxy
Focal Plane
Hipparchus
Cassini division
16. A perfect absorber and radiator of electromagnetic radiation.
Proton-proton chain
Thickest atmosphere
Hubble constant
Blackbody
17. When particles are compressed to an unnatural state where their pressure is not related to their temperature
Degeneracy
resonance
Spectroscopy
Ammonia - methane - and water
18. The mirror that determines the focus configuration of a reflector
Secondary Mirror
Roundest orbit
Particle Horizon
force
19. A spectrum of light with energy at only a few wavelengths.
inferior planets
Emission Spectrum
Hubble constant
plate tectonics
20. Matter that reveals itself only through its gravitational attraction.
Neutron Star
Shepherd satellite
dark matter
Planetary Nebula
21. The elementary building blocks from which protons and neutrons are formed.
Prominence
quarks
Ole Roemer
Gravitational Lens
22. Sa - Sb galaxies where two magnificent arms wind their way from nucleus out in a symmetrical manner.
Big Bang
Halo
Parsec
Grand design spirals
23. The universe is isotropic - homogeneous - and without beginning or end in time and space. If the universe is truly homogeneous then every line of sight will eventually end on a galaxy. If it has existed forever then there has been enough time for lig
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24. A collection of galaxies like the one the Milky Way belongs to
zone
anorthosite
Poor Cluster
jovian
25. The material from which the solar system formed
quasar
Light-Year
solar nebula
differential rotation
26. The apparent path of the Sun through the stars on the celestial sphere.
Dark matter candidates
Ecliptic
shape and color of ELLIPTICAL galaxies
Black Hole
27. A large - irregularly shaped rocky object orbiting the sun mostly between mars and jupiter. Left-over planetesimals
Spectroscopic Parallax
radio galaxy
fastest rotation
asteroid
28. Any class of objects with a uniform luminosity used to determine distance.
standard candle
Titus-Bode Law
asteroid
Nucleus
29. Poitns of gravitational stability in the orbit of a planet
Meridian
Heliocentric
Lagrangian Razor
blazar
30. A star that has become a red giant for the second and final time. It is burning helium to carbon in a shell surrounding the core
Halo
Asymptotic giant Branch Star
Kuiper belt
Flat - Flat
31. When massive objects bend space and time enough to create multiple images of an object located behind them
Hubble constant
Proton-proton chain
Galilean satellite
Gravitational Lens
32. The ratio of the actual density of the universe to the critical density. (actual density divided by the critical density
mare basalt
Particle Horizon
density parameter
Most dense
33. Is space infinitely large?
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34. 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.
Sunspot cycle
Zenith
Parallax
differential rotation
35. When the Sun moves from south to north across the celestial equator (about March 21)
Vernal Equinox
Gravitational Lens
Biologicla life created the recycling of nitrogen - co2 - and the production of oxygen. Oxygen is heavier so the atmosphere held onto it easier than hydrogen and helium.
Hyashi track
36. Mercury
Photosphere
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.
thinnest atmosphere
Chandrasekhar Limit
37. A spherical shell of comets that orbit the sun at a great distance (roughly two light years from the sun)
Sidereal Day
nova
Oort cloud
aurora
38. VENUS
superclusters
protostar
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
aphelion
39. The force of attraction between any two objects having mass
Nebula
Celestial Equator
Cepheid variables
gravity
40. Loops that trace the magnetic field as it erupts from a sunspot area and arches over to an adjacent area. They glow in the light of gas pouring out of corona and falling into photosphere.
HII Region
CNO Cycle
In an expanding universe all galaxies see all other galaxies that are not gravitationally bound to them receding away. This is what we see in the Hubble Law. We infer that the Hubble law also holds true for all other galaxies.
Coronal Loop
41. Ganymede
acceleration
opposition
MOONS: largest size
Poor Cluster
42. A star that is in the process of forming. It glows from gravitational contraction
Electromagnetic Radiation
Dark Matter
protostar
contrast northern lowlands and the southern highlands of mars...
43. 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)
Synodic Day
Summer Solstice
Doppler Shift
force
44. The temp at which a substance in the vacuum of space solidifies
supernova
condensation temperature
Superior planets
nova
45. A planet that is closer to the sun than the earth
inferior planets
greehouse effects
Sb spiral galaxy
Continuous Spectrum
46. The study of the universe as a whole.
fusion crust
Gravitational Lens
cosmology
Biologicla life created the recycling of nitrogen - co2 - and the production of oxygen. Oxygen is heavier so the atmosphere held onto it easier than hydrogen and helium.
47. Collections of young - hot stars
Planck time
Sa spiral galaxy
OB Associations
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.
48. The era when the ratio of matter to energy greatly favored matter. (verses radiation dominated universe where it was opaque. Matter is now dominated by gravity not photons)
matter dominated universe
Light Pollution
Turn off Point
Lagrangian Razor
49. Dark - reddish - low-pressure bands in Jupiter's atmosphere
belt
Largest diameter
Asymptotic giant Branch Star
meteorite
50. A highly variable galaxy nucleus of which BL Lac is one. Their light is highly energetic and their spectra are featureless. (face on)
Enke gap
force
Kirchhoff's Law
blazar