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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. Ganymede
MOONS: largest size
Geocentric
widmanstatten pattern
radio galaxy
2. Jupiter
Annular Eclipse
Largest diameter
Parallax
Positive - Converge - Greater than 1
3. Extremely round - lots of liquid water - ice rafts on surface ACTIVE SURFACE
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.
Largest diameter
weight
Europa (Jupiters moon)
4. A small and dim but hot star.
White Dwarf
Dark matter candidates
Metals
Rich vs poor clusters
5. A word meaning 'the same everywhere throughout.'
homogeneous
tectonics of Earth
belt
Astronomical Unit
6. 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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7. The location around an atom where an electron resides.
Energy Level
cosmic fireball
Yes - frozen at the poles- remains protected from the suns rays
Cepheid variables
8. Highlands: rocks are made of lighter anorthosite (similar to old earth rocks) Maria: rocks made of heavy mare basalt (volcanic rock) everywhere else is loose regolith created by meteoric impact.
direct motion
Europa (Jupiters moon)
Kirchhoff's Law
difference between maria and highlands of the moon.
9. 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)
standard candle
Coldest surface
Granules
quasar
10. The faint glow of light left over from the Big Bang. cosmic microwave background are the photons that remain after the big bang that have not turned into matter.
Chromosphere
shape and color of ELLIPTICAL galaxies
CMB
Rich Cluster
11. The name for the only seriously considered theory of the universe.
reflection star clusters
Hydrostatic Equilibrium
Cosmic Microwave Background
Big Bang
12. An object that may remain after a star explodes
Resolving Power
Liquid metallic hydrogen
Neutron Star
Flat - Remain Parallel - Exactly 1
13. The larger bodies that formed early in teh solar nebula that were chemically differentiated
retrograde motion
planetesimal
H-are Diagram
acceleration
14. Cold aggregates of gas - large and contain a huge amount of matter - so cold that molecules stick together to form molecules.
Sa spiral galaxy
Galilean satellite
molecular clouds
300000 KM/sec
15. The apparent magnitude a star would have if it were at a distance of 10 parsecs.
Absolute Magnitude
Poor Cluster
Ecliptic
density
16. A repeated - periodic push or pull capable of summing into a larger push or pull
resonance
Proton-proton chain
Shepherd satellite
Spectroscopic parallax
17. The law that syas light energy from a blackbody increases as (temperature^4)
Stephen-Boltzman Law
Roundest orbit
quasar
weight
18. Why do Galaxies move very rapidly in the interiors of the dense clusters?
Red Giant Branch Star
bulge
Dark matter is located at center of clusters - pulling the cluster members into faster orbits--dark matter gravity keeps objects in galxies bound.
Photometry
19. Mercury
The Local Group
smallest diameter
direct motion
matter dominated universe
20. A collection of galaxies like the one the Milky Way belongs to
MOONS: roundest shape
blazar
Poor Cluster
synchrotron radiation
21. Half of the longest diameter across an ellipse
Planetary Nebula
Thickest atmosphere
semimajor axis
Spectroscopic Parallax
22. Stars fromt he Halo that have drifted into the disk. as earth zooms past them in a faster orbit they appear to be going backward very fast
Eyepiece Lens
Photon
High Velocity Stars
supermassive black hole
23. 100 nm 10 nm
Electromagnetic Radiation: Ultraviolet Light
Density Wave
widmanstatten pattern
Stephen-Boltzman Law
24. A measure of the ability of a telescope to see fine detail
quasar
White Dwarf
Sc spiral galaxy
Resolving Power
25. Sulfurous volcanoes - pools of liquid sulfur - surface resembles cheese pizza ACTIVE SURFACE
Stephen-Boltzman Law
Io (jupiters moon)
Roundest orbit
Big Crunch
26. Cold aggregates of gas - large and contain a huge amount of matter - so cold that molecules stick together to form molecules.
How is winding dilemma solved?
Dark Nebula
direct motion
molecular clouds
27. Massive compact halo objects (MACHO) - weakly interacting massive particles (WIMPY's)
Steady State Theory (Leads to Olber's Paradox)
Hubble constant
Flare
Dark matter candidates
28. The surface of the sun
Chromosphere
Photosphere
contrast northern lowlands and the southern highlands of mars...
Ganymede (Jupiter)
29. The displacement of spectral lines to redder colors caused by the expansion of the universe.
cosmological red shift
Focal Plane
fewest moons
2 Reasons Why there are Supermassive Black holes at the center of every Galaxy
30. A measure of the force of gravity on an object
Nebula
cosmological red shift
3 reasons we orbit satellites to observe universe
weight
31. 10^2 nm 10^7 nm
Electromagnetic Radiation: Gamma Ray
cosmology
MOONS: larger than mercury
smallest diameter
32. The most mass a white dwarf can have before collapsing to a neutron star
Chandrasekhar Limit
great red spot
Instability strip
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.
33. The instant of time after the Big Bang when space and time obtained their characteristics. (t=10^-43 sec when gravity freezes out-instant when gravity started existing as a separate force)
Planck time
highlands
Photometry
bulge
34. Venus (retrograde)
Hubble law
Colestial Pole
accretion
slowest rotation
35. In an OPEN UNIVERSE - the curvature of space-time is ____ - Parallel beams will converge/diverge/remain parallel (circle one). The density parameter - Ω0 - is____.
Umbra
supermassive black hole
terrestrial planet
Negative - Diverge - Less than 1
36. Norhern lowlands- darker in color and have far fewer craters as if an ancient sea or ice field covered them. southern highlands- much higher in density of craters.
Reflector
Focal Length
contrast northern lowlands and the southern highlands of mars...
reflection star clusters
37. The instant of time after the Big Bang when space and time obtained their characteristics. (t=10^-43 sec when gravity freezes out-instant when gravity started existing as a separate force)
acceleration
The Local Group
Planck time
Energy Level
38. A star that blows itself apart
Supernova (You can be my supernova girl)
Bok Globule
Ionization
fusion crust
39. A particle of light.
Emission Spectrum
highlands
Autumnal Equinox
Photon
40. The dark - relativley smooth areas on the moon; Latin for sea
Supernova (You can be my supernova girl)
quarks
Maria
Differential Rotation
41. An evolved star - past the helium flash that is burning helium to carbon in it's cores
widmanstatten pattern
Colestial Pole
Zenith
Horizontal Branch Star
42. The study of the universe as a whole.
Neutron Star
cosmology
difference between maria and highlands of the moon.
Metals
43. 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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44. A location on an H-are Diagram where evolving stars pulsate
radio lobe
Cosmic Microwave Background (CMB)
rotation curve=winding dilemma?
Instability strip
45. Formed rapidly - collapsed slower into disk shape - star birth rate is low but lasts longer and ongoing - contain higher mass blue stars.
Electromagnetic Radiation
Density Wave
Gravitational Lens
shape and color of SPIRAL galaxies
46. 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.
Coronal Loop
High Velocity Stars
Light Gathering Power
Lagrangian Razor
47. Possible Fates of the Universe
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
semimajor axis
MOONS: larger than mercury
Flocculent spirals
48. The point where a superior planet is as far away from the sun as it can be (as seen from the Earth)
How is winding dilemma solved?
opposition
tectonics of Venus
Molecular Clouds
49. The location in an H-are diagram of a star cluster - where stars have just left the main sequence. Used to estimate the cluster age.
Sc spiral galaxy
If it is in a denser medium - such as glass - it will move slower
Turn off Point
Pulsar
50. The shadow area behind the Earth or Moon where the Sun is completely obscured.
Umbra
Precession
Dark matter is located at center of clusters - pulling the cluster members into faster orbits--dark matter gravity keeps objects in galxies bound.
Hydrostatic Equilibrium